pinecone/core-2020-05-10-deduplication huggingface dataset:
Adequate bases of phase space master integrals for $gg \to h$ at NNLO
  and beyond

We study master integrals needed to compute the Higgs boson production cross
section via gluon fusion in the infinite top quark mass limit, using a
canonical form of differential equations for master integrals, recently
identified by Henn, which makes their solution possible in a straightforward
algebraic way. We apply the known criteria to derive such a suitable basis for
all the phase space master integrals in afore mentioned process at
next-to-next-to-leading order in QCD and demonstrate that the method is
applicable to next-to-next-to-next-to-leading order as well by solving a
non-planar topology. Furthermore, we discuss in great detail how to find an
adequate basis using practical examples. Special emphasis is devoted to master
integrals which are coupled by their differential equations.Comment: 33 pages, 6 figure
Spectral and morphological analysis of the remnant of Supernova 1987A
  with ALMA & ATCA

We present a comprehensive spectral and morphological analysis of the remnant
of Supernova (SN) 1987A with the Australia Telescope Compact Array (ATCA) and
the Atacama Large Millimeter/submillimeter Array (ALMA). The non-thermal and
thermal components of the radio emission are investigated in images from 94 to
672 GHz ($\lambda$ 3.2 mm to 450 $\mu$m), with the assistance of a
high-resolution 44 GHz synchrotron template from the ATCA, and a dust template
from ALMA observations at 672 GHz. An analysis of the emission distribution
over the equatorial ring in images from 44 to 345 GHz highlights a gradual
decrease of the east-to-west asymmetry ratio with frequency. We attribute this
to the shorter synchrotron lifetime at high frequencies. Across the transition
from radio to far infrared, both the synchrotron/dust-subtracted images and the
spectral energy distribution (SED) suggest additional emission beside the main
synchrotron component ($S_{\nu}\propto\nu^{-0.73}$) and the thermal component
originating from dust grains at $T\sim22$ K. This excess could be due to
free-free flux or emission from grains of colder dust. However, a second
flat-spectrum synchrotron component appears to better fit the SED, implying
that the emission could be attributed to a pulsar wind nebula (PWN). The
residual emission is mainly localised west of the SN site, as the spectral
analysis yields $-0.4\lesssim\alpha\lesssim-0.1$ across the western regions,
with $\alpha\sim0$ around the central region. If there is a PWN in the remnant
interior, these data suggest that the pulsar may be offset westward from the SN
position.Comment: ApJ accepted. 21 pages, emulateapj. References update
W pair production cross-section and W branching fractions in $e^{+}e^{-}$ interactions at 189 GeV

The cross-section for the process $e^+e^-\rightarrow W^+W^-$has been measured with the data sample collected by DELPHIat an average centre-of-mass energy of 189~GeV andcorresponding to an integrated luminosity of 155~pb$^{-1}$. Based on the 2392 events selected as $WW$ candidates, the croedoubly resonant process $e^+e^-\rightarrow W^+W^-$ has been me$15.83 \pm 0.38~\mbox{(stat)} \pm 0.20~\mbox{(syst)~pb}$.The branching fractions of the $W$ decay were also measured ato be in good agreement with the Standard Model expectation.From these a value of the CKM mixing matrix element$ |V_{cs}| = 1.001 \pm 0.040~\mbox{(stat)} \pm 0.020~\mbox{(s$was derived.The cross-section for the process e+e- -> W+W- has been measured with the data sample collected by DELPHI at an average centre-of-mass energy of 189 GeV and corresponding to an integrated luminosity of 155 pb^{-1}. Based on the 2392 events selected as WW candidates, the cross-section for the doubly resonant process e+e- -> W+W- has been measured to be 15.83 +- 0.38 (stat) +- 0.20 (syst) pb. The branching fractions of the W decay were also measured and found to be in good agreement with the Standard Model expectation. From these a value of the CKM mixing matrix element |V_{cs}| = 1.001 +- 0.040 (stat) +- 0.020 (syst) was derived.The cross-section for the process e + e − → W + W − has been measured with the data sample collected by DELPHI at an average centre-of-mass energy of 189 GeV and corresponding to an integrated luminosity of 155 pb −1 . Based on the 2392 events selected as WW candidates, the cross-section for the doubly resonant process e + e − → W + W − has been measured to be 15.83±0.38 (stat) ±0.20 (syst) pb . The branching fractions of the W decay were also measured and found to be in good agreement with the Standard Model expectation. From these a value of the CKM mixing matrix element |V cs |=1.001±0.040 (stat) ±0.020 (syst) was derived
On the dependence of spectroscopic indices of early-type galaxies on age, metallicity and velocity dispersion

We investigate the Mg-sigma and <Fe>-sigma relations in a sample of 72 early-type galaxies drawn mostly from cluster and group environments using a homogeneous data-set which is well-calibrated onto the Lick/IDS system. The small intrinsic scatter in Mg at a given sigma gives upper limits on the spread in age and metallicity of 49% and 32% respectively, if the spread is attributed to one quantity only and if the variations in age and metallicity are uncorrelated. The age/metallicity distribution as inferred from the Hbeta vs <Fe> diagnostic diagram reinforces this conclusion, as we find mostly galaxies with large luminosity weighted ages spanning a range in metallicity. In our sample we do not find significant evidence for an anti-correlation of ages and metallicities which would keep the index-sigma relations tight while hiding a large spread in age and metallicity. As a result of correlated errors in the age-metallicity plane, a mild age-metallicity anti-correlation cannot be completely ruled out given the current data. Correcting the line-strengths indices for non-solar abundance ratios following the recent paper by Trager et al., leads to higher mean metallicity and slightly younger age estimates while preserving the metallicity sequence. The [Mg/Fe] ratio is mildly correlated with the central velocity dispersion and ranges from [Mg/Fe]=0.05 to 0.3 for galaxies with sigma > 100 km/s. Under the assumption that there is no age gradient along the index-sigma relations, the abundance-ratio corrected Mg-sigma, <Fe>-sigma and Hbeta-sigma relations give consistent estimates of Delta [M/H]/ Delta log sigma = 0.9 (+- 0.1). The slope of the Hbeta-sigma relation limits a potential age trend as a function of sigma to 2-3 Gyrs along the sequence.(abriged
Predictors of stunting, wasting, and underweight among Tanzanian children born to HIV-infected women

Background: Children born to HIV-infected women are susceptible to undernutrition, but modifiable risk factors and the time course of the development of undernutrition have not been well characterized. Objective: To identify maternal, socioeconomic, and child characteristics that are associated with stunting, wasting, and underweight among Tanzanian children born to HIV-infected mothers, followed from 6 weeks for 24 months. Methods: Maternal and socioeconomic characteristics were recorded during pregnancy, data pertaining to the infant’s birth were collected immediately after delivery, morbidity histories and anthropometric measurements were performed monthly. Multivariate Cox proportional hazards methods were used to assess the association between potential predictors and the time to first episode of stunting, wasting, and underweight. Results: 2387 infants (54.0% male) were enrolled and followed for a median duration of 21.2 months. The respective prevalence of prematurity (<37 weeks) and low birthweight (<2500g) was 15.2% and 7.0%; 11.3% of infants were HIV-positive at 6 weeks. Median time to first episode of stunting, wasting, and underweight was 8.7, 7.2, and 7.0 months, respectively. Low maternal education, few household possessions, low infant birthweight, child HIV infection and male sex were all independent predictors of stunting, wasting, and underweight. In addition, preterm infants were more likely to become wasted and underweight, whereas those with a low Apgar score at birth were more likely to become stunted. Conclusion: Interventions to improve maternal education and nutritional status, reduce mother-to-child transmission of HIV, and increase birth weight may lower the risk of undernutrition among children born to HIV-infected women
Whole exome sequencing of circulating tumor cells provides a window into metastatic prostate cancer

Comprehensive analyses of cancer genomes promise to inform prognoses and precise cancer treatments. A major barrier, however, is inaccessibility of metastatic tissue. A potential solution is to characterize circulating tumor cells (CTCs), but this requires overcoming the challenges of isolating rare cells and sequencing low-input material. Here we report an integrated process to isolate, qualify and sequence whole exomes of CTCs with high fidelity, using a census-based sequencing strategy. Power calculations suggest that mapping of >99.995% of the standard exome is possible in CTCs. We validated our process in two prostate cancer patients including one for whom we sequenced CTCs, a lymph node metastasis and nine cores of the primary tumor. Fifty-one of 73 CTC mutations (70%) were observed in matched tissue. Moreover, we identified 10 early-trunk and 56 metastatic-trunk mutations in the non-CTC tumor samples and found 90% and 73% of these, respectively, in CTC exomes. This study establishes a foundation for CTC genomics in the clinic
The public life of the Swahili stonehouse, 14th - 15th centuries AD

Houses are an important subject of archaeological research, normally explored through the households they contain. This has established a deliberately social agenda for the archaeology of houses, yet has had the unintended consequence of creating bounded worlds for study. Although household archaeologies explore the ways that households contributed to broader social and economic realms, it is rare to think through the public role of houses for non-residents and the larger population of the settlement. This paper seeks to explore this more public aspect of houses using the data from archaeology at Songo Mnara, a 14th–15th century Swahili town on the southern Tanzanian coast. This was a time when stone-built domestic architecture was first emerging in this region. The archaeology of the houses provides data for a series of ways that the house was at the heart of the economic and political life of the town, as well as demonstrating a spatial continuity between indoor and outdoor spaces. It is therefore suggested that the domestic and residential functions of the house for a particular household should be balanced with an appreciation of the broader world of the house itself
Effective fermion-Higgs interactions at an $e^+e^-$ collider with
  polarized beams

We consider the possibility of new physics giving rise to effective
interactions of the form $e^+e^-Hf \bar f$, where $f$ represents a charged
lepton $\ell$ or a (light) quark $q$, and $H$ the recently discovered Higgs
boson. Such vertices would give contributions beyond the standard model to the
Higgs production processes $e^+e^- \to H\ell^+\ell^-$ and $e^+e^- \to H q \bar
q$ at a future $e^+e^-$ collider. We write the most general form for these
vertices allowed by Lorentz symmetry. Assuming that such interactions
contribute in addition to the standard model production processes, where the
final-state fermion pair comes from the decay of the $Z$ boson, we obtain the
differential cross section for the processes $e^+e^- \to H\ell^+\ell^-$ and
$e^+e^- \to Hq\bar q$ to linear order in the effective interactions. We propose
several observables with differing CP and T properties which, if measured, can
be used to constrain the couplings occurring in interaction vertices. We derive
possible limits on these couplings that may be obtained at a collider with
centre-of-mass energy of 500 GeV and an integrated luminosity of 500 fb$^{-1}$.
We also carry out the analysis assuming that both the electron and positron
beams can be longitudinally polarized, and find that the sensitivity to the
couplings can be improved by a factor of 2-4 by a specific choice of the signs
of the polarizations of both the electron and positron beams for the same
integrated luminosity.Comment: 20 pages, 11 figures, 6 tables, Matches with the Published Versio
Responses of marine benthic microalgae to elevated CO<inf>2</inf>

Increasing anthropogenic CO2 emissions to the atmosphere are causing a rise in pCO2 concentrations in the ocean surface and lowering pH. To predict the effects of these changes, we need to improve our understanding of the responses of marine primary producers since these drive biogeochemical cycles and profoundly affect the structure and function of benthic habitats. The effects of increasing CO2 levels on the colonisation of artificial substrata by microalgal assemblages (periphyton) were examined across a CO2 gradient off the volcanic island of Vulcano (NE Sicily). We show that periphyton communities altered significantly as CO2 concentrations increased. CO2 enrichment caused significant increases in chlorophyll a concentrations and in diatom abundance although we did not detect any changes in cyanobacteria. SEM analysis revealed major shifts in diatom assemblage composition as CO2 levels increased. The responses of benthic microalgae to rising anthropogenic CO2 emissions are likely to have significant ecological ramifications for coastal systems. © 2011 Springer-Verlag
Capturing quantitative zooplankton information in the sea: Performance test of laser optical plankton counter and video plankton recorder in a Calanus finmarchicus dominated summer situation

We compared two optical plankton counters, the Laser Optical Plankton Counter (LOPC) and the
Video Plankton Recorder (VPR) for their abundance estimates of Calanus finmarchicus during an
early summer situation (June 2008) in two North Norwegian fjords. The LOPC was mounted on the
VPR frame in order to sample the same body of water. The combined system of LOPC and VPR was
operated by vertical profiling from the surface to 100 m of depth in several locations of the fjords
representing different blooming conditions and zooplankton community structures. Data from the two
instruments, as well as from CTD-F, were logged concurrently and retrieved on deck after about 15
depth profiles. Primary data were analysed according to standard routines, and choices made during
sampling and analyses (sampling volume, selection of size range, transparency of particles, statistics)
are discussed. Data were averaged for every 5, 10 and 15 m depth bins. The vertical profiles of C.
finmarchicus CIV–CVI abundance that were obtained by LOPC and VPR, respectively, showed a
striking similarity. No significant differences between profiles sampled by these two instruments were
observed when data were binned into 15 m bins. At low abundances
Measurement of the Z/γ* boson transverse momentum distribution in pp collisions at √s = 7 TeV with the ATLAS detector

This paper describes a measurement of the Z/γ * boson transverse momentum spectrum using ATLAS proton-proton collision data at a centre-of-mass energy of s√=7 TeV at the LHC. The measurement is performed in the Z/γ * → e + e − and Z/γ * → μ + μ − channels, using data corresponding to an integrated luminosity of 4.7 fb−1. Normalized differential cross sections as a function of the Z/γ * boson transverse momentum are measured for transverse momenta up to 800 GeV. The measurement is performed inclusively for Z/γ * rapidities up to 2.4, as well as in three rapidity bins. The channel results are combined, compared to perturbative and resummed QCD calculations and used to constrain the parton shower parameters of Monte Carlo generators
Field-dependent BRST–antiBRST transformations in Yang–Mills and Gribov–Zwanziger theories

We introduce the notion of finite BRST–antiBRST transformations, both global and field-dependent, with a doublet λa a=1,2  of anticommuting Grassmann parameters and find explicit Jacobians corresponding to these changes of variables in Yang–Mills theories. It turns out that the finite transformations are quadratic in their parameters. At the same time, exactly as in the case of finite field-dependent BRST transformations for the Yang–Mills vacuum functional, special field-dependent BRST–antiBRST transformations, with sa -potential parameters λa=saΛ induced by a finite even-valued functional Λ and by the anticommuting generators sa of BRST–antiBRST transformations, amount to a precise change of the gauge-fixing functional. This proves the independence of the vacuum functional under such BRST–antiBRST transformations. We present the form of transformation parameters that generates a change of the gauge in the path integral and evaluate it explicitly for connecting two arbitrary Rξ -like gauges. For arbitrary differentiable gauges, the finite field-dependent BRST–antiBRST transformations are used to generalize the Gribov horizon functional h  given in the Landau gauge, and being an additive extension of the Yang–Mills action by the Gribov horizon functional in the Gribov–Zwanziger model. This generalization is achieved in a manner consistent with the study of gauge independence. We also discuss an extension of finite BRST–antiBRST transformations to the case of general gauge theories and present an ansatz for such transformations
Probing the μν SSM with light scalars, pseudoscalars and neutralinos from the decay of a SM-like Higgs boson at the LHC

The “ μ from ν ” supersymmetric standard model ( μν SSM) can accommodate the newly discovered Higgs-like scalar boson with a mass around 125 GeV. This model provides a solution to the μ -problem and simultaneously reproduces correct neutrino physics by the simple use of right-handed neutrino superfields. These new superfields together with the introduced R -parity violation can produce novel and characteristic signatures of the μν SSM at the LHC. We explore the signatures produced through two-body Higgs decays into the new states, provided that these states lie below in the mass spectrum. For example, a pair produced light neutralinos depending on the associated decay length can give rise to displaced multi-leptons/taus/jets/photons with small/moderate missing transverse energy. In the same spirit, a Higgs-like scalar decaying to a pair of scalars/pseudoscalars can produce final states with prompt multi-leptons/taus/jets/photons
Myers–Perry black holes with scalar hair and a mass gap: Unequal spins

We construct rotating boson stars and Myers–Perry black holes with scalar hair (MPBHsSH) as fully non-linear solutions of five dimensional Einstein gravity minimally coupled to a complex, massive scalar field. The MPBHsSH are, in general, regular on and outside the horizon, asymptotically flat, and possess angular momentum in a single rotation plane. They are supported by rotation and have no static limit. Such hairy BHs may be thought of as bound states of boson stars and singly spinning, vacuum MPBHs and inherit properties of both these building blocks. When the horizon area shrinks to zero, the solutions reduce to (in a single plane) rotating boson stars; but the extremal limit also yields a zero area horizon, as for singly spinning MPBHs. Similarly to the case of equal angular momenta, and in contrast to Kerr black holes with scalar hair, singly spinning MPBHsSH are disconnected from the vacuum black holes, due to a mass gap. We observe that for the general case, with two unequal angular momenta, the equilibrium condition for the existence of MPBHsSH is w=m1Ω1+m2Ω2 , where Ωi are the horizon angular velocities in the two independent rotation planes and w,mi , i=1,2 , are the scalar field's frequency and azimuthal harmonic indices
Gauge field emergence from Kalb–Ramond localization

A new mechanism, valid for any smooth version of the Randall–Sundrum model, of getting localized massless vector field on the brane is described here. This is obtained by dimensional reduction of a five dimension massive two form, or Kalb–Ramond field, giving a Kalb–Ramond and an emergent vector field in four dimensions. A geometrical coupling with the Ricci scalar is proposed and the coupling constant is fixed such that the components of the fields are localized. The solution is obtained by decomposing the fields in transversal and longitudinal parts and showing that this gives decoupled equations of motion for the transverse vector and KR fields in four dimensions. We also prove some identities satisfied by the transverse components of the fields. With this is possible to fix the coupling constant in a way that a localized zero mode for both components on the brane is obtained. Then, all the above results are generalized to the massive p -form field. It is also shown that in general an effective p and (p−1) -forms cannot be localized on the brane and we have to sort one of them to localize. Therefore, we cannot have a vector and a scalar field localized by dimensional reduction of the five dimensional vector field. In fact we find the expression p=(d−1)/2 which determines what forms will give rise to both fields localized. For D=5 , as expected, this is valid only for the KR field
Highly asymmetric magnetic behavior in exchange biased systems induced by noncollinear field cooling

A detailed study of the angular dependence of the magnetization reversal in polycrystalline ferromagnetic (FM)/antiferromagnetic Co/IrMn bilayers with noncollinear FM and unidirectional\ud
anisotropies shows a peculiar asymmetric magnetic behavior. The anisotropy configuration is set via a field cooling (FC) procedure with the magnetic field misaligned with respect to the easy\ud
magnetization direction of the FM layer. Different magnetization reversal modes are observed for either positive or negative angles with respect to the FC direction. The angular dependence of both coercivity and exchange bias also clearly displays the broken symmetry of the induced\ud
noncollinearity. Our findings are reproduced with a modified Stoner–Wohlfarth model including the induced anisotropy configuration. Our results highlight the importance of the relative angle between\ud
anisotropies in exchange bias systems, opening a new path for the tailoring of their magnetic properties.This work was supported in part by the Spanish MICINN through Project Nos. MAT2006-13470, MAT2007-66309-C02, HF2006-0197, and CSD2007-00010 and by the Comunidad de Madrid and the Generalitat de Catalunya through Project Nos. Nanomagnet S-0505/MAT/0194 and\ud
2009-SGR-1292, respectively. Work at Argonne was supported by the UChicago Argonne, LLC through Contract No.DE-AC02-06CH1357.Peer reviewe
Hyperfine mixing in b -> c semileptonic decay of doubly heavy baryons

We qualitatively corroborate the results of [W. Roberts, M. Pervin, Int. J. Mod. Phys. A 24 (2009) 2401] according to which hyperfine mixing greatly affects the decay widths of b -> c semileptonic decays involving doubly heavy bc baryons. However, our predictions for the decay widths of the unmixed states differ from those reported in the work of Roberts and Pervin by a factor of 2, and this discrepancy translates to the mixed case. We further show that the predictions of heavy quark spin symmetry, might be used in the future to experimentally extract information on the admixtures in the actual physical bc baryons, in a model independent manner.This research was supported by DGI and FEDER funds, under contracts FIS2008-01143/FIS, FIS2006-03438,\ud
FPA2007-65748, and the Spanish Consolider-Ingenio 2010 Programme CPAN (CSD2007-00042), by Junta de Castilla\ud
y León under contracts SA016A07 and GR12, and by the EU HadronPhysics2 project. C. A. wishes to acknowledge\ud
a contract supported by PIE-CSIC 200850I238 during his stay at IFIC where part of this work was done.Peer reviewe