bluuebunny/crossref_metadata_2025 huggingface dataset:
Factor structure of the parental bonding instrument for pregnant Japanese women
Authors: Fukui Naoki , Watanabe Yuichiro , Hashijiri Koyo , Motegi Takaharu , Ogawa Maki , Egawa Jun , Enomoto Takayuki , Someya Toshiyuki
Published: November 2022

The parental bonding instrument (PBI) is often used to examine the perceptions of children and adolescents regarding parenting practices. Previous studies have investigated the factor structure of the PBI. However, although it is important to examine the relationships between the perceived parenting practices and perinatal mental health, few studies have included perinatal women. We aimed to accurately clarify which PBI factor structure was useful in assessing perinatal women (n = 4633). Furthermore, we evaluated the measurement invariance between primipara and multipara groups, and between the paternal and maternal PBI forms. Our exploratory and confirmatory factor analyses revealed that a three-factor PBI structure was most plausible for perinatal women. Moreover, we found complete invariance (residual invariance) of the PBI ratings across primipara and multipara women for the paternal and maternal forms. In contrast, we found weak invariance (metric invariance) of the PBI ratings across the paternal and maternal forms. Our participants tended to rate fathers as less caring and less overprotective than mothers. This three-factor structure shows measurement invariance in perinatal women and can be used to accurately determine how the perceived parenting style before adolescence influences women’s mental health in the perinatal period.
Stent-based electrode for radiofrequency ablation in the rat esophagus: a preliminary study
Authors: Won Dong-Sung , Park Yubeen , An Jinsu , Ryu Dae Sung , Kang Jeon Min , Kim Ji Won , Kim Song Hee , Zeng Chu Hui , Kim Hongbae , Kim Hyung-Sik , Park Jung-Hoon , Lee Sang Soo
Published: November 2022

Endoluminal radiofrequency (RF) ablation has been widely used as a safe and effective treatment for Barrett’s esophagus. However, inadequate RF ablation may occur due to insufficient contact between the electrode and target tissues. Herein, a stent-based monopolar RF electrode (SE) was developed to evenly deliver RF energy to the inner wall of the rat esophagus. The optimal RF parameters were evaluated in the exposed rat esophagus. The temperature in the rat esophagus reached 70 ℃ in 89 s at 30 W, 59 s at 40 W, and 34 s at 50 W. The technical feasibility and efficacy of RF ablation using SE were evaluated based on changes in histological transformation and immunohistochemical parameters of tissues compared at immediately, 1 and 2 weeks after the procedure. The degrees of inflammatory cell infiltration, fibrotic changes, TUNEL, and HSP70 in the RF-ablated rat esophagus were significantly higher than compared with sham control (all p < 0.05). TUNEL-positive deposition gradually decreased, but HSP 70-positive deposition maintained a similar level for 2 weeks. The stent-based RF ablation was technically feasible and effective in evenly inducing thermal damages to the rat esophagus. The RF ablation system using the SE may represent a promising treatment for endoluminal malignancies.
Hypogene enrichment in Miduk porphyry copper ore deposit, Iran
Authors: Yousefi Soorani L. , Shafiei Bafti B. , Homam S. M. , Abbasloo Z. , Taghizadeh Zanooghi H.
Published: November 2022

This study was planned with the aim of identifying the nature and circumstances of the high-graded central core and increasing trend of copper content through depth of 1000 m in Miduk PCD. Mechanisms of high-grading, refer to hypogene enrichment (HE), in PCDs poorly understood. Two main hypotheses for hypogene enrichment formation assumed addition of extra copper to the system, alternatively hypogene leaching and enrichment. In order to obtain alteration-mineralization-geochemical pattern both horizontally and vertically, all macroscopic data extracted from relogging of 6800 m’ drill core along an east–west profile, compiled with microscopic observations from studying of 550 thin-polished sections and copper grades of 3400 samples analyzed by XRF and ICP-OES. Our findings proved hypogene enrichment events at deposit. HE evidences in macroscopic and microscopic scales identified almost as various replacement textures between Fe-Cu sulphides and also vein-reopening by later Cu-mineralization and new generation of disseminated or vein type mineralization. In addition, appearance of dark halo, as consuming intermediate chalcocite phase, around pyrite and chalcopyrite which gradually evolves as bornite, also extruding extra iron as fibrous hematite at the outer edge of bornite product replaced chalcopyrite, partially replacement of bornite and chalcopyrite to hypogene chalcocite and covellite-digenite in deep potassic are other HE evidences in the case study. Here, we draw on microscopic observations and SEM-BSE-EDS results, secondary hypogene genesis for some of bornite and chalcopyrite as a hypogene enrichment evidence. Observations from relogging show that potassic alteration has a relatively good preservation in the center of the deposit from depth to surface, but affected by intense overprinting of subsequent alterations towards margins. Evident function of ore-leaching at margins, also elevated copper grades in central parts of the deposit strongly suggest leaching-fixation mechanism. Where buffer potential of the rock is preserved copper fixation and where it totally eliminated almost complete leaching of copper happened. Consequently, we introduce leaching-fixation as index processes in hypogene enrichment at the case study. We suggest that identifying the nature of hypogene enrichment processes and its characterizations not only improve understanding about PCD’s hydrothermal evolution, but also achieve exploration indicators, furthermore, industrial benefits in the production line.
Fabrication of in-situ rod-like TiC particles dispersed Ti matrix composite using graphite power sheet
Authors: Wang Ning , Choi Yongbum , Oue Kentaro , Matsugi Kazuhiro
Published: November 2022

Titanium matrix composites (TMCs) with TiC reinforcements were fabricated by an in-situ method that evolves pure titanium foils (thick: 100 μm) and graphite powder sheets by spark plasma sintering. 20 μm thick graphite powder sheets with PVA (polyvinyl alcohol) were fabricated as carbon resources. The effects of different sintering temperatures and heating time on microstructural features, interface, and properties of the composites were investigated. The structural and microstructural analyses were performed by EPMA, FE-SEM, and EDS. The XRD patterns taken from the cross-section of the prepared composites revealed the composites are composed of TiCx and hexagonal close-packed (HCP) α-Ti. Homogeneous rod-like TiCx particles reinforced TMCs were evaluated by tensile property. The tensile properties of the rod-like TiCx-reinforced TMC show that the tensile strength (UTS) is 479 Mpa, which is 81.4% higher than pure titanium. The formation mechanism and enhancement mechanism of rod-like TiCx particles are also discussed.
Factor structure of the Parenting Stress Index-Short Form used in the Japan Environment and Children’s Study
Authors: Hatakeyama Takehiro , Matsumura Kenta , Tsuchida Akiko , Inadera Hidekuni ,   The Japan Environment and Children’s Study (JECS) Group, Kamijima Michihiro , Yamazaki Shin , Ohya Yukihiro , Kishi Reiko , Yaegashi Nobuo , Hashimoto Koichi , Mori Chisato , Ito Shuichi , Yamagata Zentaro , Nakayama Takeo , Sobue Tomotaka , Shima Masayuki , Nakamura Hiroshige , Suganuma Narufumi , Kusuhara Koichi , Katoh Takahiko
Published: November 2022

The Parenting Stress Index-Short Form (PSI-SF) has been widely employed to assess parenting stress in a number of research and clinical trials. To date, no parenting stress studies in Japan have examined the factor structure, validity, and reliability of the PSI-SF. Therefore, this study aimed to evaluate the psychometric properties of this 19-item version as administered in a national cohort study, the Japan Environment and Children’s Study, to two sample groups of mothers, those with a 1.5-year-old child and those with a 2.5-year-old child (n = 79,282 and 75,831, respectively). We performed exploratory factor analysis to re-examine the appropriate factor structure, confirmatory factor analysis to evaluate goodness of fit, and calculated Cronbach’s α and Pearson’s r coefficients to evaluate internal consistency and reproducibility over time, respectively. The results highlighted that a three-factor structure fit the instrument better than a two-factor structure, yielding better scores for the model fit indices and the α and r coefficients. In addition, the third factor identified in this study was strongly associated with having a relationship with and help from the husband. The findings suggest the importance of using a parenting stress scale with various factors to evaluate mothers’ parenting stress.
Highly reversible Li metal anode using a binary alloy interface
Authors: Chen Jiahe , Sun Zejun , Li Zhendong , Liu Jun , Yao Xiayin , Peng Zhe
Published: November 2022

A binary Ag–Zn alloy interface is designed to efficiently enhance the structural stability in keeping the high Li affinity of the alloy structure, and exhibits a great Li protective ability for a stable and durable Li metal anode.
Supramolecular hybrids of chiral Waugh polyoxometalate with cyclodextrins
Authors: Qi Zhen-Qing , Wang Ming-Yue , Shen Jia-Chi , Lan You-Zhao , Jiang Zhan-Guo , Zhan Cai-Hong
Published: November 2022

Cyclodextrins promote the homochiral crystallization of Polyoxometalate Λ-{MnMo9} enantiomer to isolate two unprecedented supramolecular architectures with enhanced circular dichroism signal.
Effect of substitution on the charge transport properties of oligophenylenethiolate self-assembled monolayers
Authors: Liu Yangbiao , Katzbach Sonja , Asyuda Andika , Das Saunak , Terfort Andreas , Zharnikov Michael
Published: November 2022

Fluorine-substitution at the terminal tail groups in oligophenylenethiolate self-assembled monolayers strongly affects the current density across the films but does not change the tunneling decay coefficient.
Threshold photoelectron spectroscopy of trimethylborane and its pyrolysis products
Authors: Schleier Domenik , Gerlach Marius , Schaffner Dorothee , Mukhopadhyay Deb Pratim , Hemberger Patrick , Fischer Ingo
Published: November 2022

A new decomposition mechanism for trimethylborane at high temperatures has been discovered.
Glycosidase activated prodrugs for targeted cancer therapy
Authors: Martin Harlei , Lázaro Laura Ramírez , Gunnlaugsson Thorfinnur , Scanlan Eoin M.
Published: November 2022

In this review glycosidase activated prodrugs that target cancer cells are discussed.
Synthesis of a visible-light-driven Ag2O–Co3O4 Z-scheme photocatalyst for enhanced photodegradation of a reactive yellow dye
Authors: Saeed Muhammad , Al-Saeed Fatimah A. , Altaf Muhammad , Alahmari Saeed D. , Bokhari Tanveer Hussain , Bajaber Majed A. , Khan Iltaf , Ahmed Ahmed Ezzat
Published: November 2022

The development of an efficient, cost-effective, and stable visible-light-driven photocatalyst for the photodegradation of organic pollutants is a challenging task.
A novel Ni/Co metal–organic framework with a porous organic polymer material as a ligand for a high-performance supercapacitor and a glucose sensor
Authors: Li Wenyue , Ma Xiaoyan , Song Senyang , Shao Bo , Liu Xiaoju , Chen Jiahe
Published: November 2022

A metal–organic framework (Ni/Co-DAP MOF) with porous organic polymer DAP as a ligand delivers remarkable performance for energy storage and glucose sensing.
The effect of alkali treatment and organic modification of diatomite on the properties of diatomite composite separators
Authors: Xue Bing , Yi Tianxing , Li Dongni , Li Fangfei , Luo Feng
Published: November 2022

Alkali treatment and organic modification were used to regulate the surface properties of diatomite, and diatomite composite separators were prepared by using alkali-treated diatomite and organic-modified diatomite as coating materials.
Pt(iv) complex selectively oxidizes alpha-synuclein methionine as disclosed by NMR
Authors: Pan Bin-Bin , Liu Hui-Zhong , Meng Wei-Han , Su Xun-Cheng
Published: November 2022

Alpha-synuclein (αS) is an intrinsically disordered neuronal protein, and the oxidative modification of αS promotes its oligomerization and accumulation in Parkinson's disease.
Photoinduced oxidation of benzylic boronic esters to ketones/aldehydes via α-borylalkyl radicals
Authors: Wang Zhijun , Wei Lanfeng , Liu Jichang , Wei Yu , Xu Liang
Published: November 2022

The direct conversion from boronic esters to the carbonyl groups has been realized herein, via the bromine radical and α-borylalkyl radical under visible light.
Modelling the compression of a soft ellipsoid fingertip
Authors: Shi Ge , Shariati Azadeh , Eames Ian , Wurdemann Helge
Published: November 2022

This paper describes an analytical formulation of the deformation of an ellipsoid soft membrane, applied to a purely mechanically driven haptic feedback system, in particular, to the membrane of the fingertip sensor.
Light scattering from mixtures of interacting, nonionic micelles with hydrophobic solutes
Authors: Alexander Nathan P. , Phillips Ronald J. , Dungan Stephanie R.
Published: November 2022

Correlation functions are derived using fluctuation theory applied to locally monodisperse, nonionic micellar solutions with solute, providing theoretical support for the apparent absence of multicomponent diffusion effects on light scattering data.
Behaviour of the model antibody fluid constrained by rigid spherical obstacles: Effects of the obstacle–antibody attraction
Authors: Hvozd Taras , Kalyuzhnyi Yurij V. , Vlachy Vojko
Published: November 2022

The obstacle–antibody attraction causes re-entrant phase behavior in the model antibody fluid confined in attractive random porous medium.
A solar-powered interfacial evaporation system based on MoS2-decorated magnetic phase-change microcapsules for sustainable seawater desalination
Authors: Shen Haohai , Zheng Zhiheng , Liu Huan , Wang Xiaodong
Published: November 2022

We have developed a novel type of solar-powered interfacial evaporation system based on MoS2-decorated magnetic phase-change microcapsules for highly efficient seawater desalination and wastewater purification under intermittent solar illumination.
Discovery of resonance-enhanced emission effect and its application in the design of fluorescent molecules
Authors: Liu Xue , Ye Wei , Lin Wan , Cheng Yinwei , Xu Liyan , Li Enmin , Zhang Hefeng
Published: November 2022

In addition to D–A effect and inter-molecular interaction, resonance enhanced emission effect promised a new perspective to understand the fluorescence mechanism and to develop dual-state emissive emitters with tunable emissions in full-color range.
Living on the edge of the Milky Way's central molecular zone
Authors: Busch Laura A. , Riquelme Denise , Güsten Rolf , Menten Karl M. , Pillai Thushara G. S. , Kauffmann Jens
Published: November 2022

Context.The 1°.3 (G1.3) and 1°.6 (G1.6) cloud complexes in the central molecular zone (CMZ) of our Galaxy have been proposed to possibly reside at the intersection region of the X1 and X2 orbits for several reasons. This includes the detection of co-spatial low- and high-velocity clouds, high velocity dispersion, high fractional molecular abundances of shock-tracing molecules, and kinetic temperatures that are higher than for usual CMZ clouds.

Aims.By investigating the morphology and deriving physical properties as well as chemical composition, we want to find the origin of the turbulent gas and, in particular, whether evidence of an interaction between clouds can be identified.

Methods.We mapped both cloud complexes in molecular lines in the frequency range from 85 to 117 GHz with the IRAM 30 m telescope. The APEX 12m telescope was used to observe higher frequency transitions between 210 and 475 GHz from selected molecules that are emitted from higher energy levels. We performed non-local thermodynamic equilibrium (non-LTE) modelling of the emission of an ensemble of CH3CN lines to derive kinetic temperatures and H2volume densities. These were used as starting points for non-LTE modelling of other molecules, for which column densities and abundances were determined and compared with values found for other sources in the CMZ.

Results.The kinematic structure of G1.3 reveals an ‘emission bridge’ at intermediate velocities (~150 km s−1) connecting low-velocity (~100 km s−1) and high-velocity (~180 km s−1) gas and an overall fluffy shell-like structure. These may represent observational evidence of cloud-cloud interactions. Low- and high-velocity gas components in G1.6 do not show this type of evidence of an interaction, suggesting that they are spatially separated. We selected three positions in each cloud complex for further analysis. Each position reveals several gas components at various peak velocities and of various line widths. We derived kinetic temperatures of 60–100 K and H2volume densities of 104–105cm−3in both complexes. Molecular abundances relative to H2suggest a similar chemistry of the two clouds, which is moreover similar to that of other GC clouds and, especially, agrees well with that of G+0.693 and G−0.11.

Conclusions.We conclude that G1.3 may indeed exhibit signs of cloud-cloud interactions. In particular, we propose an interaction of gas that is accreted from the near-side dust lane to the CMZ, with gas pre-existing at this location. Low- and high-velocity components in G1.6 are rather coincidentally observed along the same line of sight. They may be associated with either overshot decelerated gas from the far-side dust line or actual CMZ gas and high-velocity gas moving on a dust lane. These scenarios would be in agreement with numerical simulations.
High accuracy spectroscopy of 3- and 4-body Λ hypernuclei at Jefferson Lab
Authors: Gogami T. , Achenbach P. , Akiyama T. , Androic D. , Asaturyan A. , Brash E. , Bukhari M. H. , Camsonne A. , Covrig Dusa S. , Ebata K. , Elaasar M. A. , Fujii Y. , Fujiwara T. , Furic M. , Garibaldi F. , Gueye P. , Higinbotham D. W. , Ishige T. , Itabashi K. , Kaneta M. , Kino R. , Lashley N. , Markowitz P. , Meekins D. , Mizuno M. , Mkrtchyan H. G. , Mkrtchyan A. H. , Nagafusa S. , Nagano S. , Nagao S. , Nakamura S. N. , Nakamura Y. R. , Niculescu G. , Niculescu I. , Okuyama K. , Pandey B. , Pochodzalla J. , Reinhold J. , Rodriguez V. M. , Samanta C. , Sawatzky B. , Shabestari M. H. , Shahinyan A. , Sirca S. , Suzuki K. N. , Tachibana K. , Tang L. , Toyama Y. , Tsutsumi K. , Uehara K. , Umezaki E. , Urciuoli G. M. , Watanabe D. , Wood S. A.
Published: November 2022

JLab E12-19-002 Experiment is planned to measure the Λ-binding energies of3ΛH [Jπ= 1/2+or 3/2+(T= 0)] and4ΛH (1+) at JLab Hall C. The expected accuracy for the binding-energy measurement is |ΔBtotalΛ| ≃ 70 keV. The accurate spectroscopy for these light hypernuclei would shed light on the puzzle of the small binding energy and short lifetime of3ΛH, and the chargesymmetry breaking in the ΛN interaction. We aim to perform the experiment in 2025.
Single- & double-strangeness hypernuclei up to A = 8 within χEFT
Authors: Le Hoai
Published: November 2022

We investigate S=−1 and −2 hypernuclei with A = 4 − 8 employing the Jacobi-NCSM approach and in combination with baryon-baryon interactions derived within the frame work of chiral effective field theory. The employed interactions are transformed using the similarity renormalization group (SRG) so that the low- and high-momentum states are decoupled, and, thereby, convergence of the binding energies with respect to model space can be significantly speeded up. Such an evolution is however only approximately unitary when the so-called SRG induced higher-body forces are omitted. We first explore the impact of the SRG evolution on the Λ separation energies BΛ in A = 3 − 5 hypernuclei when only SRG-evolved two-body and when both twoand three-body forces are included. For the latter scenario, we thoroughly study predictions of the two almost phase-equivalent NLO13 and NLO19 YN potentials for A = 4 − 7 hypernuclei. We further explore CSB splittings in the A = 7; 8 multiplets employing the two NLO YN potentials that include also the leading CSB potential in the ΛN channel, whose strength has been fitted to the presently established CSB in A = 4. Finally, we report on our recent study for Ξ hypernuclei based on the ΞN interaction at NLO.
Studying ΛN interactions through the 208Pb(e,e’K+)208ΛTl reaction
Authors: Garibaldi Franco , Benhar Omar , Bydzovsky Petr , Gogami Toshiyuki , Covrig Silviu , Markowitz Pete E.C. , Millener John , Motoba Toshio , Nagao Sho , Nakamura Satoshi N. , Reinhold Joerg , Tang Liguang , Urciuoli Guido Maria , Vidana Isaac
Published: November 2022

The hyperon puzzle, the observation that the two-solar-mass neutron star existence is hardly explained by all models predicting the appearance of hyperons in the neutron star core, is currently one of the unsolved key issues in the physics of compact stars. To solve the hyperon puzzle an experimental program has been proposed by the Jefferson lab hypernuclear collaboration and approved by the Jefferson Lab (JLab) PAC. This program consists in the study of the reaction (e, e’K) on 40Ca and 48Ca nuclei, aimed at investigating the isospin dependence of hyperon dynamics, and in the study of the reaction (e, e’K) on 208Pb nucleus, which is the subject of this paper and which will take advantage of the fact that 208Pb properties largely reflects those of the uniform nuclear matter present in the interior of the neutron stars making it the ideal tool to investigate neutron star features. The proposal of the study of the reaction (e, e’K) on 208Pb was approved by the Jlab PAC in 2020.
Spectrum of few-body systems in a finite volume
Authors: Bazak Betzalel , Schäfer Martin , Yaron Roee , Barnea Nir
Published: November 2022

Lattice quantum chromodynamics calculations of multi-baryon systems with physical quark masses could bridge the gap between nuclear physics and its fundamental theory. Such calculations are performed on a finite grid, and thus extrapolation of finite-volume numerical results to the physical-relevant free-space quantities is needed. A common approach for the extrapolation utilizes the two-body Lüscher formula and its generalization to larger systems. To understand better the accuracy of this approach we study here two model systems, bosonic and fermionic. The few-body systems are solved with the stochastic variational method in a periodic box, and the extrapolated values are compared to those calculated directly in free space.
Study of the Λ/Σ0 electroproduction in the low-Q2 region at JLab
Authors: Okuyama K. , Itabashi K. , Nagao S. , Nakamura S. N. , Suzuki K. N. , Gogami T. , Pandey B. , Tang L. , Abrams D. , Akiyama T. , Androic D. , Aniol K. , Ayerbe Gayoso C. , Bane J. , Barcus S. , Barrow J. , Bellini V. , Bhatt H. , Bhetuwal D. , Biswas D. , Camsonne A. , Castellanos J. , Chen J-P. , Chen J. , Covrig S. , Chrisman D. , Cruz-Torres R. , Das R. , Fuchey E. , Gnanvo K. , Garibaldi F. , Gautam T. , Gomez J. , Gueye P. , Hague T. J. , Hansen O. , Henry W. , Hauenstein F. , Higinbotham D. W. , Hyde C. E. , Kaneta M. , Keppel C. , Kutz T. , Lashley-Colthirst N. , Li S. , Liu H. , Mammei J. , Markowitz P. , McClellan R. E. , Meddi F. , Meekins D. , Michaels R. , Mihovilovic M. , Moyer A. , Nguyen D. , Nycz M. , Owen V. , Palatchi C. , Park S. , Petkovic T. , Premathilake S. , Reimer P. E. , Reinhold J. , Riordan S. , Rodriguez V. , Samanta C. , Santiesteban S. N. , Sawatzky B. , Širca S. , Slifer K. , Su T. , Tian Y. , Toyama Y. , Uehara K. , Urciuoli G. M. , Votaw D. , Williamson J. , Wojtsekhowski B. , Wood S. A. , Yale B. , Ye Z. , Zhang J. , Zheng X.
Published: November 2022

We performed an experiment using tritium and hydrogen cryogenic gas targets at Thomas Jefferson National Accelerator Facility (JLab) in 2018 (E12-17-003)[1, 2]. In this article, we discuss the Λ/Σ0 hyperon electroproduction from hydrogen target. Elementary Λ/Σ0 hyperon production processes are important not only for an absolute mass scale calibration in our experiment, but also for the study of the electroproduction mechanisms themselves. In this article, we reported the results of the differential cross section for the p(e, e’K+)Λ/Σ0 reaction at Q2 ∼ 0.5 (GeV/c)2.
The impact of final-state interaction on the πΣ photoproduction in the Λ(1405) region
Authors: Cieplý Aleš , Bruns Peter C.
Published: November 2022

It was recently demonstrated [1] that the meson-baryon rescattering in the final state has a major impact on the magnitude and structure of the πΣ mass distributions observed in the γp → K+πΣ photoproduction. We discuss briefly several aspects of this work emphasizing the model dependence of the meson-baryon amplitudes, used to represent the final-state interaction, and the role of the adopted photoproduction mechanism.
The BGOOD experiment at ELSA Exotic structures in the strange quark sector?
Authors: Jude Thomas , Alef Stefan , Beck Reinhard , Braghieri Alessandro , Cole Philip , Di Salvo Rachele , Elsner Daniel , Fantini Alessia , Freyermuth Oliver , Fromberger Frank , Ghio Francesco , Groß Johannes , Kohl Katrin , Levi Sandri Paolo , Mandaglio Guiseppe , Pedroni Paolo , Romaniuk Mariia , Scheluchin Georg , Schmieden Hartmut
Published: November 2022

The BGOOD photoproduction experiment accesses forward meson angles and low momentum exchange kinematics in the uds sector, which may be sensitive to molecular-like hadronic structure. Recent highlights are summarised in these proceedings.
Application of model selection criteria for K+Σ− photoproduction within an isobar approach
Authors: Petrellis Dimitrios , Bydžovský Petr , Cieplý Aleš , Skoupil Dalibor , Zachariou Nicholas
Published: November 2022

We study kaon photoproduction off a neutron target using an isobar model. Recently acquired polarization data from the CLAS collaboration are incorporated in our analysis, while a novel fitting procedure is employed that allows us to reduce the number of parameters used with a minimal cost on the information content.
Exploring the neutron skin by hyperon–antihyperon production in antiproton–nucleus interactions
Authors: Christiansen Martin , Schupp Falk , Achenbach Patrick , Bölting Michael , Pochodzalla Josef , Steinen Marcell
Published: November 2022

In this work we propose a new method to measure the evolution of the neutron skin thickness between different isotopes. We consider antiproton–nucleus interactions close to the production threshold of ΛΛ̅ and Σ− Λ̅ pairs. At low energies, ΛΛ̅ pairs are produced in p̅ + p collisions, while Σ−Λ̅ pairs can only be produced in p̅ + n interactions. Measuring these cross sections provides information on the neutron skin thickness.
Strangeness production in the NA61/SHINE experiment at the CERN SPS energy range
Authors: Balkova Yuliia
Published: November 2022

NA61/SHINE is a multi-purpose fixed-target experiment located at the H2 beamline of the CERN North Area. One of the main goals of the experiment is to study the phase transition and search for the critical point of the strongly interacting matter. Strangeness production is a long-known valuable probe for understanding particle production in high-energy physics due to the absence of strange valence quarks in the initial collision state. This talk will present the results of strangeness production in p+p, Be+Be, and Ar+Sc collisions in the SPS energy range (√sNN = 5.1 − 17.3 GeV) measured by NA61/SHINE. The talk will emphasise the importance of the results for discussion of the onset of deconfinement and onset of fireball. The obtained results will be compared to available world data and selected theoretical models.
Ξ-nuclear constraints from 𝚵−emulsion capture events
Authors: Friedman Eliahu , Gal Avraham
Published: November 2022

All five KEK and J-PARC two-body Ξ−+AZ →A′ΛZ’ +A″ΛZ” capture events in light emulsion nuclei, including KISO and IBUKI in14N, are consistent with Coulombassisted 1pΞ−nuclear states. The underlying Ξ-nuclear potential is strongly attractive, with nuclear-matter depthVΞlarger than 20 MeV. The recent14N capture events KINKA and IRRAWADDY assigned by J-PARC E07 to 1sΞ−nuclear states, and implying considerably shallowerVΞ, have also another interpretation as 1pΞ0nuclear states.
Production of light 𝚵-hypernuclei, 𝚵7H
Authors: Fujioka Hiroyuki
Published: November 2022

A light Ξ hypernucleus, Ξ7H, is expected to be bound. Furthermore, it is pointed out that Ξ7H will decay into ΛΛ5H with a large branching ratio. We plan to study the 7Li(K−, K+) reaction to investigate the Ξ7H system and to evaluate the experimental feasibility to perform decay pion spectroscopy of ΛΛ5H in future.
A spectroscopic study of 𝚵10Li hypernucleus via the 10B(K−,K+)X reaction
Authors: Tokiyasu Atsushi
Published: November 2022

We are planning a 10ΞLi production experiment using the 10B(K−,K+)X reaction at the J-PARC, K1.8 beamline. We perform spectroscopy of missing masses using the S − 2S spectrometer, which can achieve high resolution. Since the cross section of Ξ-hypernuclei is very small, we would like to use a thick target. To ensure the missing mass resolution, we propose a semiinclusive method using a tracking device to detect the decay particles from Ξ-hypernuclei.
Results of analysis of Σ+p scattering events in J-PARC E40 experiment: differential cross sections and phase shifts of 3S1 and 1P1 states
Authors: Nanamura Takuya , Miwa Koji , Hayakawa Shuhei H. , Honda Ryotaro , Nakada Yoshiyuki , Takahashi Toshiyuki , Ukai Mifuyu , Yamamoto Takeshi O.
Published: November 2022

We performed a novel Σ+p scattering experiment at the J-PARC Hadron Experimental Facility. Approximately 2400 Σ+p scattering events were identified by a kinematical consistency check for the recoil proton. The differential cross sections of the Σ+p elastic scattering were derived with better precision than in previous experiments. By exploiting high-quality differential cross section data and the simple representation of Σ+p interaction in the SU(3) flavor symmetry, we performed a phase-shift analysis on hyperon-nucleon scattering data for the first time. The absolute value of the phase shift of the 3S1 channel, where a large repulsive force was predicted due to the Pauli exclusive effect between quarks, was evaluated. These results indicate that the interaction of the 3S1 channel in the Σ+p channel is moderately repulsive, as the Nijmegen extended-soft-core models predicted.
Status of the hyperon-nucleon interaction in chiral effective field theory
Authors: Haidenbauer Johann , Meißner Ulf-G.
Published: November 2022

The Jülich-Bonn group aims at an extensive study of the baryonbaryon (BB) interaction involving strange baryons (Λ, Σ, Ξ) within SU(3) chiral effective field theory. An overview of achievements and new developments over the past few years is provided. The topics covered are: 1) Derivation of the leading charge-symmetry breaking (CSB) interaction for the ΛN system and its application in a study of CSB effects in A=4 Λ-hypernuclei. 2) Updated results for the ΞN interaction at NLO and predictions for Ξ−p correlation functions. 3) Extension of the ΛN-ΣN interaction to next-to-next-to-leading order.
Study on hadron-hadron interaction with femtoscopic technique
Authors: Kamiya Yuki
Published: November 2022

We study the method to study the exotic hadrons using the femtoscopic correlation function in the high-energy collisions. The formula for the correlation function extended to the coupled-channel case is employed. We see that how the coupled-channel effect works for the correlation function from the different hadron emitting sources with the case of the K−p correlation function. The method is applied to the prediction for the DD*/DD̅* correlation function for the study of the Tcc/X(3872) state.
ΛNN content of Λ-nucleus potential
Authors: Friedman Eliahu , Gal Avraham
Published: November 2022

A minimally constructed Λ-nucleus density-dependent optical potential is used to calculate binding energies of observed 1sΛ, 1pΛ states across the periodic table, leading to a repulsive ΛNN contribution D(3)Λ≈14 MeV to the phenomenological Λ-nucleus potential depth DΛ ≈ −30 MeV. This value is significant in connection with the so-called ’hyperon puzzle.’
Equation of state and strangeness in neutron stars - role of hyperon-nuclear three-body forces -
Authors: Weise Wolfram
Published: November 2022

A brief survey is presented of our present understanding of the equation-of-state of cold, dense matter and the speed of sound in the interior of neutron stars, based on the constraints inferred from observational data. The second part focuses on strangeness in baryonic matter and the role of hyperonnuclear two- and three-body forces, with reference to the "hyperon puzzle" in neutron stars and possible scenarios for its solution.
A novel approach to the measurement of the hyperon nucleon/s interaction by AMADEUS
Authors: Piscicchia Kristian , Cargnelli Michael , Del Grande Raffaele , Fabbietti Laura , Marton Johann , Moskal Pawel , Ramos Àngels , Scordo Alessandro , Sirghi Diana , Skurzok Magdalena , Vazquez Doce Oton , Wycech Slavomir , Zmeskal Johann , Branchini Paolo , Czerwinski Eryk , De Leo Veronica , De Lucia Erika , Di Cicco Alessandro , Diociaiuti Eleonora , Fermani Paolo , Fiore Salvatore , Martini Matteo , Perez Del Rio Elena , Selce Andrea , Silarski Michal , Curceanu Catalina
Published: November 2022

The AMADEUS collaboration is investigating the low-energy antikaon interactions with nucleons and nuclei, taking advantage of the lowmomentum antikaons beam provided by the DAΦNE collider at LNF-INFN.

In this work a novel technique is outlined for the measurement of the hyperonnucleon two and three body scattering cross sections. The method consists in producing hyperons by antikaons atomic captures in light nuclear targets, and extrapolating the cross sections from the measurement of the yields of the corresponding elastic final state interactions of the hyperons.

The feasibility of this kind of analyses is shown by comparison of calculated Σ0 production in 4He by K− absorption on three nucleons, with a sample of K−12C absorption measured by AMADEUS in collaboration with KLOE. The feasibility of a dedicated high statistics measurement is discussed.
Triangle singularity in the K−d → pΣ− reaction and its relevance to find the K̅N amplitude below threshold
Authors: Oset Eulogio , Molina Raquel , Dai Lian Rong , Feijoo Albert
Published: November 2022

We study for the first time the pΣ− → K−d and its time reversal reaction close to threshold and show that they are driven by a triangle mechanism, with the Λ(1405), a proton and a neutron as intermediate states, which develops a triangle singularity close to the K̅d threshold. As the main result, we find that the cross section, well within measurable range, is very sensitive to different models that, while reproducing K̅N observables above threshold, provide different extrapolations of the K̅N amplitudes below threshold. The observables of this reaction will provide new constraints on the theoretical models, leading to more reliable extrapolations of the K̅N amplitudes below threshold and to more accurate predictions of the Λ(1405) state of lower mass.
Four-body Faddeev-type calculation of the K̅NNN system
Authors: Shevchenko Nina V.
Published: November 2022

A quasi-bound state in the K̅NNN system caused by strong interactions was studied using dynamically exact four-body Faddeev-type equations. Binding energy and width of the K−ppn state were calculated using three antikaon-nucleon and three nucleon-nucleon interaction models.
Recent studies on hypernuclei lifetimes from STAR
Authors: Leung Yue Hang
Published: November 2022

The hyperon-nucleon (Y-N) interaction is an essential ingredient in the description of the equation-of-state of high-baryon-density matter. Light hypernuclei (A= 3, 4), being simpleY-Nbound states, serve as cornerstones of our understanding of theY-Ninteraction. Thus, precise measurements of their lifetimes are important, as they provide stringent tests to hyperon-nucleon interaction models.

The yields of light hypernuclei are expected to increase from high to low energy heavy-ion collisions due to the increase in baryon density. As a result, the STAR Beam Energy Scan II program, which spans an energy range of √sNN= 3.0 − 27.0 GeV, is particularly suited for hypernuclei studies. In these proceedings, recent results on the lifetimes of light hypernuclei (3ΛH,4ΛH,4ΛHe) measured in √sNN= 3.0 and 7.2 GeV Au+Au collisions are presented. The relative branching ratio R3of the3ΛH is intimately related to its lifetime. A new R3measurement using data from √sNN= 3.0 GeV Au+Au collisions is reported. These results will be compared to previous measurements and theoretical calculations, and the physics implications will be discussed.
Studies of hypernuclei with heavy-ion beams, nuclear emulsions and machine learning
Authors: Saito Takehiko R.
Published: November 2022

The lightest hypernucleus, the hypertriton, has been a benchmark in the field of hypernuclear physics. However, some of recent experiments employing energetic heavy-ion beams have revealed that the hypertriton lifetime is significantly shorter than 263 ps which is expected by considering the known weakly binding nature of the hypertriton. The STAR collaboration has also measured the hypertriton binding energy, and the deduced value is contradicting to its formerly known small binding energy. These measurements have indicated that the fundamental physics quantities of the hypertriton such as its lifetime and binding energy have not been understood, therefore, they have to be measured very precisely. Furthermore, an unprecedented Λnn bound state observed by the HypHI collaboration has to be studied in order to draw a conclusion whether or not such a bound state exists. These three-body hypernuclear states are studied by the heavy-ion beam data in theWASA-FRS experiment and by analysing J-PARC E07 nuclear emulsion data with machine learning.
Centrality dependence of multistrangeness production in high-energy heavy-ion collisions
Authors: Arakelyan Gevorg H. , Merino Carlos , Shabelski Yuli M.
Published: November 2022

We compare the experimental data on yields of protons, strange Λ′s, and multistrange baryons (Ξ, Ω), and antibaryons production on nuclear targets, and the experimental ratios of multistrange to strange antibaryon production, at the energy region from SPS up to LHC, with the corresponding results of the Quark-Gluon String Model calculations. In the case of heavy nucleus collisions, the experimental dependence of the Ξ̅+/Λ̅, and Ω̅+/Λ̅ ratios, on the centrality of the collision, shows a manifest violation of quark combinatorial rules.
Femtoscopic measurements of two-kaon combinations in Au+Au collisions at the RHIC energies
Authors: Pawłowska Diana
Published: November 2022

Femtoscopic measurements allow one to study the geometric characteristics of the homogeneity region created during the heavy-ion collisions. The lightest strange hadrons are charged and neutral kaons, which enhancement of the productions is one of the Quark-Gluon Plasma signatures. Analyzing high statistic data taken by the STAR experiment, it is possible to study the shortlived neutral kaons identified through their decay products: positive and negative pions. Thanks to the K0S K± analysis, one can also study the production of a0 resonance, which might be a tetraquark. These proceedings will present the femtoscopic analysis of charged and neutral kaons correlations in Au+Au collisions at √sNN = 39 GeV and 200 GeV measured by the STAR experiment.
Investigation of the Σ0 hyperon production in p(3.5GeV)+p collisions
Authors: Esmail Waleed
Published: November 2022

The production mechanism of the Σ0 was investigated via the exclusive reaction pp → pK+Σ0 at a beam energy 3.5 GeV with the HADES detector. The preliminary value of the extracted total production cross section is found to be σ(pK+Σ0)[μb] = 17.7 ± 1.7(stat) ± 1.6(syst). The dynamics of the reaction pp → pK+Σ0 was investigated by studying the angular distributions in the center-of-mass, Gottfried-Jackson and helicity frames. The angular distributions in the center-of-mass frame supports the pion exchange mechanism. Furthermore, the helicity angular distributions are highly non-isotropic, which is a clear indication of resonant production component.
Neutron stars and the hyperon puzzle
Authors: Vidaña Isaac
Published: November 2022

In this work we shortly review the so-called “hyperon puzzle”, i.e., the problem of the strong softening of the equation of state of dense matter induced by the presence of hyperons which leads to maximum masses of neutron stars incompatible with the recent observations of ∼ 2 M⊙ millisecond pulsars. In particular, we briefly go through some of the possible solutions that have been proposed to tackle this still open problem.
Studying ϕ meson properties in nuclear matter from dilepton and K+K− decays
Authors: Gubler Philipp , Bratkovskaya Elena
Published: November 2022

After briefly reviewing the state of theoretical knowledge related to the behavior of the ϕ meson in nuclear matter, preliminary results of transport simulations of pA reactions corresponding to the KEK E325 experiment are presented. Finally, an outlook to current and future developments in the field is given.
Hyperonic equation of state at finite temperature for neutron stars
Authors: Kochankovski Hristijan , Ramos Angels , Tolos Laura
Published: November 2022

We review the composition and the equation of state of the hyperonic core of neutron stars at finite temperature within a relativistic mean-field approach. We make use of the new FSU2H∗ model, which is built upon the FSU2H scheme by improving on the Ξ potential according to the recent analysis on the Ξ atoms, and we extend it to include finite temperature corrections. The calculations are done for a wide range of densities, temperatures and charge fractions, thus exploring the different conditions that can be found in protoneutron stars, binary mergers remnants and supernovae explosions. The inclusion of hyperons has a strong effect on the composition and the equation of state at finite temperature, which consequently would lead to significant changes in the properties and evolution of hot neutron stars.
Estimation of compositeness with correction terms
Authors: Kinugawa Tomona , Hyodo Tetsuo
Published: November 2022

The compositeness X is defined as the probability to observe the composite structure such as the hadronic molecule component in a bound state. One of the model-independent approaches to calculate X is the weak-binding relation. However, when the scattering length a0 is larger than the radius of the bound state R, the central value of the compositeness X becomes larger than unity, which cannot be interpreted as a probability. For the systems with a0 > R, we need to estimate the compositeness with the correction terms. For the reasonable determination of the compositeness, we first present the quantitative estimation of the correction terms. Because the exact value of the compositeness should be contained in its definition domain 0 ≤ X ≤ 1, we propose the reasonable estimation method with the uncertainty band by excluding the region outside of the definition domain of the compositeness. We finally estimate the compositeness of physical systems, and obtain the result which we can interpret as the fraction of the composite component.
J-PARC hadron experimental facility extension project *
Authors: Sakuma Fuminori , Aoki Kazuya , Fujioka Hiroyuki , Gogami Toshiyuki , Hidaka Yoshimasa , Hiyama Emiko , Honda Ryotaro , Hosaka Atsushi , Ichikawa Yudai , Ieiri Masaharu , Isaka Masahiro , Ishii Noriyoshi , Ishikawa Takatsugu , Komatsu Yusuke , Komatsubara Takeshi , Lim GeiYoub , Miwa Koji , Morino Yuhei , Nagae Tomofumi , Nagao Sho , Nakamura Satoshi N. , Nanjo Hajime , Naruki Megumi , Nemura Hidekatsu , Nomura Tadashi , Noumi Hiroyuki , Ohnishi Hiroaki , Ozawa Kyoichiro , Sawada Shinya , Sekihara Takayasu , Shim Sang-In , Shiomi Koji , Shirotori Kotaro , Tajima Yasuhisa , Takahashi Hitoshi , Takahashi Toshiyuki , Takeuchi Sachiko , Takizawa Makoto , Tamura Hirokazu , Tanida Kiyoshi , Ukai Mifuyu , Yamamoto Takeshi O. , Yamamoto Yasuo
Published: November 2022

The J-PARC Hadron Experimental Facility was constructed with an aim to explore the origin and evolution of matter in the universe through experiments with intense particle beams. In the past decade, many results from particle and nuclear physics experiments have been obtained at the present facility. To expand the physics programs to as yet unexplored regions, the extension project of the Hadron Experimental Facility has been extensively discussed. This contribution presents the physics of the extension of the Hadron Experimental Facility to resolve issues related to strangeness nuclear physics, hadron physics, and flavor physics.
Future prospects of spectroscopic study of Lambda hypernuclei at JLab and J-PARC HIHR
Authors: Nakamura Satoshi N.
Published: November 2022

The (e, e′K+) reaction spectroscopy opened a door to high resolution spectroscopy of Λ hypernuclei at JLab and it is currently the only technique to give sub-MeV energy resolution for reaction spectroscopy of wide-mass range Λ hypernuclei. New experiments from light to heavy hypernuclei are under preparation at JLab to solve hypertriton puzzle, to clarify charge symmetry breaking of Λ hypernuclei and to give a clue to solve the hyperon puzzle or the puzzle of heavy neutron stars.

As a hypernuclear precision spectroscopy experiment with other than electron beams, there is a newly proposed experiment using the (π+, K+) reaction at the new HIHR beamline, which is a key facility in the J-PARC hadron experimental facility extension project. The HIHR beamline adopts the momentum dispersion match technique and will enable us to perform sub-MeV resolution spectroscopy for isospin partners to the Λ hypernuclei studied with the electron beams at JLab.
Genetic characterization of Cryptosporidium spp. in Hotan Black Chickens in China reveals two novel subtypes of Cryptosporidium meleagridis
Authors: Feng Xinwei , Xin Luyao , Yu Fuchang , Song Xianming , Zhang Jianing , Deng Jinhua , Qi Meng , Zhao Wei
Published: November 2022

A total of 617 fecal specimens were collected on 18 Hotan Black chicken farms in Southern Xinjiang, China, and tested for the presence of Cryptosporidium spp. by PCR of the small subunit ribosomal RNA (SSU rRNA) gene. The overall infection rate by Cryptosporidium spp. was 11.5% (71/617), and ten of the 18 farms were positive. The infection rate by Cryptosporidium spp. was 14.5% (48/331) in the 30–60 d group, higher than chickens in the <30 d (12.0%, 15/125), 60–90 d (6.9%, 5/72), and >90 d (3.4%, 3/89) groups. Cryptosporidium meleagridis (n = 38) and C. baileyi (n = 33) were confirmed by sequencing analysis. A total of 25 of the 38 C. meleagridis-positive specimens were subtyped successfully at the gp60 gene, including one known subtype (IIIbA23G1R1, n = 1) and two novel subtypes, named IIIbA25G1R1 (n = 20) and IIIbA31G1R1 (n = 4). The results showed that infection by Cryptosporidium spp. in Hotan Black Chickens was common in this area and the distribution of C. meleagridis subtypes had regional characteristics.