pinecone/core-2020-05-10-deduplication huggingface dataset:
Impact of the three-loop corrections on the QCD analysis of the deep-inelastic-scattering data

We perform the analysis of the existing inclusive deep inelastic scattering (DIS) data within NNLO QCD approximation. The parton distributions functions (PDFs) and the value of strong coupling constant $\alpha_{s}(M_{\rm Z})=0.1164\pm0.0013 (exp)$ are obtained. The sensitivity of the PDFs to the uncertainty in the value of the NNLO corrections to the splitting functions is analyzed. It is shown that the PDFs errors due to this uncertainty is generally less than the experimental uncertainty in PDFs through the region of $x$ spanned by the existing DIS data
T-duality for boundary-non-critical point-particle and string quantum
  mechanics

It is observed that some structures recently uncovered in the study of
Calogero-Sutherland models and anyons are close analogs of well-known
structures of boundary conformal field theory. These examples of ``boundary
conformal quantum mechanics'', in spite of their apparent simplicity, have a
rather reach structure, including some sort of T-duality, and could provide
useful frameworks for testing general properties of boundary conformal
theories. Of particular interest are the duality properties of anyons and
Calogero-Sutherland particles in presence of boundary-violations of conformal
invariance; these are here briefly analyzed leading to the conjecture of a
general interconnection between (deformed) boundary conformal quantum
mechanics, T-type duality, and (``exchange'' or ``exclusion'') exotic
statistics. These results on the point-particle quantum-mechanics side are
compared with recent results on the action of T-duality on open strings that
satisfy conformal-invariance-violating boundary conditions. Moreover, it is
observed that some of the special properties of anyon and Calogero-Sutherland
quantum mechanics are also enjoyed by the M(atrix) quantum mechanics which has
recently attracted considerable attention.Comment: 10 pages, LaTex. (To appear in the proceedings of Quantum Aspects of
  Gauge Theories, Supersymmetry and Unification, Neuchatel, 18-23 September
  1997.
Properties of few-body systems in relativistic quantum mechanics and
  constraints from transformations under Poincar\'{e} space-time translations

Different approaches have been applied to the calculation of form factors of
various hadronic systems within relativistic quantum mechanics. In a one-body
current approximation, they can lead to results evidencing large discrepancies.
Looking for an explanation of this spreading, it is shown that, for the largest
part, these discrepancies can be related to a violation of Poincar\'e
space-time translation invariance. Beyond energy-momentum conservation, which
is generally assumed, fulfilling this symmetry implies specific relations that
are generally ignored. Their relevance within the present context is discussed
in detail both to explain the differences between predictions and to remove
them.Comment: 5 pages, to be published in the proceedings of the 18th International
  Conference on Few-Body Problems in Physics (Santos, Sao Paulo, Brasil
Space, time, parallelism and noise requirements for reliable quantum
  computing

Quantum error correction methods use processing power to combat noise. The
noise level which can be tolerated in a fault-tolerant method is therefore a
function of the computational resources available, especially the size of
computer and degree of parallelism. I present an analysis of error correction
with block codes, made fault-tolerant through the use of prepared ancilla
blocks. The preparation and verification of the ancillas is described in
detail. It is shown that the ancillas need only be verified against a small set
of errors. This, combined with previously known advantages, makes this `ancilla
factory' the best method to apply error correction, whether in concatenated or
block coding. I then consider the resources required to achieve $2 \times
10^{10}$ computational steps reliably in a computer of 2150 logical qubits,
finding that the simplest $[[n,1,d]]$ block codes can tolerate more noise with
smaller overheads than the $7^L$-bit concatenated code. The scaling is such
that block codes remain the better choice for all computations one is likely to
contemplate.Comment: LaTeX, 9 pages plus 6 figure
NEW TOOLS FOR THE BRAINBOW TOOLBOX

In a recently introduced transgenic multicolor labeling strategy called “Brainbow,” Cre-lox recombination is used to create a stochastic choice of expression among fluorescent proteins (XFPs), resulting in the indelible marking of mouse neurons with multiple, distinct colors. This method has been adapted to non-neuronal cells in mice and to neurons in fish and flies, but has yet to realize its full potential in the mouse brain. Here, we present several new lines of mice that overcome limitations of the initial lines and an adaptation of the method for use in adeno-associated viral (AAV) vectors. We also provide technical advice about how best to image Brainbow transgenes
Passive galaxies as tracers of cluster environments at z~2

Even 10 billion years ago, the cores of the first galaxy clusters are often
found to host a characteristic population of massive galaxies with already
suppressed star formation. Here we search for distant cluster candidates at z~2
using massive passive galaxies as tracers. With a sample of ~40
spectroscopically confirmed passive galaxies at 1.3<z<2.1, we tune photometric
redshifts of several thousands passive sources in the full 2 sq.deg. COSMOS
field. This allows us to map their density in redshift slices, probing the
large scale structure in the COSMOS field as traced by passive sources. We
report here on the three strongest passive galaxy overdensities that we
identify in the redshift range 1.5<z<2.5. While the actual nature of these
concentrations is still to be confirmed, we discuss their identification
procedure, and the arguments supporting them as candidate galaxy clusters
(likely mid-10^13 M_sun range). Although this search approach is likely biased
towards more evolved structures, it has the potential to select still rare,
cluster-like environments close to their epoch of first appearance, enabling
new investigations of the evolution of galaxies in the context of structure
growth.Comment: 5 pages, 5 figures; A&A Letters, in pres
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 $w=m_1\Omega_1+m_2\Omega_2$, where $\Omega_i$ are the horizon angular
velocities in the two independent rotation planes and $w,m_i$, $i=1,2$, are the
scalar field's frequency and azimuthal harmonic indices.Comment: 12 pages, 5 figure
Measurement of jet quenching with semi-inclusive hadron-jet
  distributions in central Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV

We report the measurement of a new observable of jet quenching in central
Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 2.76$ TeV, based on the semi-inclusive
rate of charged jets recoiling from a high transverse momentum (high-$p_{\rm
T}$) charged hadron trigger. Jets are measured using collinear-safe jet
reconstruction with infrared cutoff for jet constituents of 0.15 GeV/$c$, for
jet resolution parameters $R = 0.2$, 0.4 and 0.5. Underlying event background
is corrected at the event-ensemble level, without imposing bias on the jet
population. Recoil jet spectra are reported in the range
$20<p_\mathrm{T,jet}^\mathrm{ch}<100$ GeV/$c$. Reference distributions for pp
collisions at $\sqrt{s} = 2.76$ TeV are calculated using Monte Carlo and NLO
pQCD methods, which are validated by comparing with measurements in pp
collisions at $\sqrt{s} = 7$ TeV. The recoil jet yield in central Pb-Pb
collisions is found to be suppressed relative to that in pp collisions. No
significant medium-induced broadening of the intra-jet energy profile is
observed within 0.5 radians relative to the recoil jet axis. The angular
distribution of the recoil jet yield relative to the trigger axis is found to
be similar in central Pb-Pb and pp collisions, with no significant
medium-induced acoplanarity observed. Large-angle jet deflection, which may
provide a direct probe of the nature of the quasi-particles in hot QCD matter,
is explored.Comment: 37 pages, 12 captioned figures, 3 tables, authors from page 32,
  published version, figures at
  http://aliceinfo.cern.ch/ArtSubmission/node/163
Discontinuites of BFKL amplitudes and the BDS ansatz

We perform an examination of discontinuities of multiple production
amplitudes, which are required for further development of the BFKL approach. It
turns out that the discontinuities of 2 $\to$ 2 + n amplitudes obtained in the
BFKL approach contradict to the BDS ansatz for amplitudes with maximal helicity
violation in N = 4 supersymmetric Yang-Mills theory with large number of
colours starting with n = 2. Explicit expressions for the discontinuities of
the 2 $\to$ 3 and 2 $\to$ 4 amplitudes in the invariant mass of pairs of
produced gluons are obtained in the planar N=4 SYM in the next-to-leading
logarithmic approximation. These expressions can be used for checking the
conjectured duality between the light-like Wilson loops and the MHV amplitudes.Comment: 26 page
Substellar Objects in Nearby Young Clusters (SONYC) IX: The
  planetary-mass domain of Chamaeleon-I and updated mass function in Lupus-3

Substellar Objects in Nearby Young Clusters -- SONYC -- is a survey program
to investigate the frequency and properties of substellar objects in nearby
star-forming regions. We present new spectroscopic follow-up of candidate
members in Chamaeleon-I (~2 Myr, 160 pc) and Lupus 3 (~1 Myr, 200 pc),
identified in our earlier works. We obtained 34 new spectra (1.5 - 2.4 mum,
R~600), and identified two probable members in each of the two regions. These
include a new probable brown dwarf in Lupus 3 (NIR spectral type M7.5 and
Teff=2800 K), and an L3 (Teff=2200 K) brown dwarf in Cha-I, with the mass below
the deuterium-burning limit. Spectroscopic follow-up of our photometric and
proper motion candidates in Lupus 3 is almost complete (>90%), and we conclude
that there are very few new substellar objects left to be found in this region,
down to 0.01 - 0.02 MSun and Av \leq 5. The low-mass portion of the mass
function in the two clusters can be expressed in the power-law form dN/dM
\propto M^{-\alpha}, with \alpha~0.7, in agreement with surveys in other
regions. In Lupus 3 we observe a possible flattening of the power-law IMF in
the substellar regime: this region seems to produce fewer brown dwarfs relative
to other clusters. The IMF in Cha-I shows a monotonic behavior across the
deuterium-burning limit, consistent with the same power law extending down to 4
- 9 Jupiter masses. We estimate that objects below the deuterium-burning limit
contribute of the order 5 - 15% to the total number of Cha-I members.Comment: Accepted for publication by Astrophysical Journa
Search for squarks and gluinos with the ATLAS detector in final states with jets and missing transverse momentum using √s=8 TeV proton-proton collision data

A search for squarks and gluinos in final states containing high-pT jets, missing
transverse momentum and no electrons or muons is presented. The data were recorded
in 2012 by the ATLAS experiment in √s = 8TeV proton-proton collisions at the Large
Hadron Collider, with a total integrated luminosity of 20.3 fb−1. Results are interpreted in
a variety of simplified and specific supersymmetry-breaking models assuming that R-parity
is conserved and that the lightest neutralino is the lightest supersymmetric particle. An
exclusion limit at the 95% confidence level on the mass of the gluino is set at 1330GeV for
a simplified model incorporating only a gluino and the lightest neutralino. For a simplified
model involving the strong production of first- and second-generation squarks, squark
masses below 850GeV (440GeV) are excluded for a massless lightest neutralino, assuming
mass degenerate (single light-flavour) squarks. In mSUGRA/CMSSM models with
tan β = 30, A0 = −2m0 and μ > 0, squarks and gluinos of equal mass are excluded for
masses below 1700GeV. Additional limits are set for non-universal Higgs mass models
with gaugino mediation and for simplified models involving the pair production of gluinos,
each decaying to a top squark and a top quark, with the top squark decaying to a charm
quark and a neutralino. These limits extend the region of supersymmetric parameter space
excluded by previous searches with the ATLAS detector
Acceptability with general orderings

Computational Logic: Logic Programming and Beyond, Essays in Honour of Robert A. Kowalski, Part IWe present a new approach to termination analysis of logic programs. The essence of the approach is that we make use of general orderings (instead of level mappings), like it is done in transformational approaches to logic program termination analysis, but we apply these orderings directly to the logic program and not to the term-rewrite system obtained through some transformation. We define some variants of acceptability, based on general orderings, and show how they are equivalent to LD-termination. We develop a demand driven, constraint-based approach to verify these acceptability-variants.status: publishe
Long term photometric monitoring with the Mercator telescope - Frequencies and mode identification of variable O-B stars

Aims. We selected a large sample of O-B stars that were considered as (candidate) slowly pulsating B, β Cep, and Maia stars after the analysis of their hipparcos data. We analysed our new seven passband geneva data collected for these stars during the first three years of scientific operations of the mercator telescope. We performed a frequency analysis for 28 targets with more than 50 high-quality measurements to improve their variability classification. For the pulsating stars, we tried both to identify the modes and to search for rotationally split modes. Methods: We searched for frequencies in all the geneva passbands and colours by using two independent frequency analysis methods and we applied a 3.6 S/N-level criterion to locate the significant peaks in the periodograms. The modes were identified by applying the method of photometric amplitudes for which we calculated a large, homogeneous grid of equilibrium models to perform a pulsational stability analysis. When both the radius and the projected rotational velocity of an object are known, we determined a lower limit for the rotation frequency to estimate the expected frequency spacings in rotationally split pulsation modes. Results: We detected 61 frequencies, among which 33 are new. We classified 21 objects as pulsating variables (7 new confirmed pulsating stars, including 2 hybrid β Cep/SPB stars), 6 as non-pulsating variables (binaries or spotted stars), and 1 as photometrically constant. All the Maia candidates were reclassified into other variability classes. We performed mode identification for the pulsating variables for the first time. The most probable ℓ value is 0, 1, 2, and 4 for 1, 31, 9, and 5 modes, respectively, including only 4 unambiguous identifications. For 7 stars we cannot rule out that some of the observed frequencies belong to the same rotationally split mode. For 4 targets we may begin to resolve close frequency multiplets.status: publishe
Evidence that the a_0(980) and f_0(980) are not elementary particles

We study the interesting problem of whether it is possible to distinguish composite from elementary particles. In particular we generalize a model-independent approach of Weinberg to the case of unstable particles. This allows us to apply our formalism to the case of the a(0)(980) and f(0)(980) resonances and to address the question whether these particles are predominantly genuine, confined quark states (of (q) over barq or qq (q) over bar(q) over bar structure) or governed by mesonic components. (C) 2004 Elsevier B.V. All rights reserved
N=1 supersymmetric Proca–Stueckelberg mechanism for extra vector multiplet

We present a variant formulation of N=1 supersymmetric Proca–Stueckelberg mechanism for an arbitrary non-Abelian group in four dimensions. This formulation resembles our previous variant supersymmetric compensator mechanism in 4D. Our field content consists of the three multiplets: (i) a non-Abelian Yang–Mills multiplet (AμI,λI) , (ii) a tensor multiplet (BμνI,χI,φI) and (iii) an extra vector multiplet (KμI,ρI,CμνρI) with the index I for the adjoint representation of a non-Abelian gauge group. The CμνρI is originally an auxiliary field dual to the conventional auxiliary field DI for the extra vector multiplet. The vector KμI and the tensor CμνρI get massive, after absorbing respectively the scalar φI and the tensor BμνI . The superpartner fermion ρI acquires a Dirac mass shared with χI . We fix non-trivial quartic interactions in the total lagrangian, with corresponding cubic interaction terms in field equations
Infinite matrix product states for long-range SU(N) spin models

We construct 1D and 2D long-range SU(N) spin models as parent Hamiltonians associated with infinite matrix product states. The latter are constructed from correlators of primary fields in the SU(N)1 WZW model. Since the resulting groundstates are of Gutzwiller–Jastrow type, our models can be regarded as lattice discretizations of fractional quantum Hall systems. We then focus on two specific types of 1D spin chains with spins located on the unit circle, a uniform and an alternating arrangement. For an equidistant distribution of identical spins we establish an explicit connection to the SU(N) Haldane–Shastry model, thereby proving that the model is critical and described by a SU(N)1 WZW model. In contrast, while turning out to be critical as well, the alternating model can only be treated numerically. Our numerical results rely on a reformulation of the original problem in terms of loop models
Measurement of the low-mass Drell-Yan differential cross section at root s=7 TeV using the ATLAS detector

The differential cross section for the process Z/gamma* -&gt; ll (l = e, mu) as a function of dilepton invariant mass is measured in pp collisions at root s = 7 TeV at the LHC using the ATLAS detector. The measurement is performed in the e and mu channels for invariant masses between 26 GeV and 66 GeV using an integrated luminosity of 1.6 fb(-1) collected in 2011 and these measurements are combined. The analysis is extended to invariant masses as low as 12 GeV in the muon channel using 35 pb(-1) of data collected in 2010. The cross sections are determined within fiducial acceptance regions and corrections to extrapolate the measurements to the full kinematic range are provided. Next-to-next-to-leading-order QCD predictions provide a significantly better description of the results than next-to-leading-order QCD calculations, unless the latter are matched to a parton shower calculation.<p>ATLAS Collaboration, for complete list of authors see http://dx.doi.org/10.1007/JHEP06(2014)112</p
International STakeholder NETwork (ISTNET): creating a developmental neurotoxicity (DNT) testing road map for regulatory purposes

A major problem in developmental neurotoxicity (DNT) risk assessment is the lack of toxicological hazard information for most compounds. Therefore, new approaches are being considered to provide adequate experimental data that allow regulatory decisions. This process requires a matching of regulatory needs on the one hand and the opportunities provided by new test systems and methods on the other hand. Alignment of academically and industrially-driven assay development with regulatory needs in the field of DNT is a core mission of the International STakeholder NETwork (ISNET) in DNT testing. The first meeting of ISTNET was held in Zurich on 23-24 January 2014 in order to explore the concept of adverse outcome pathway (AOP) to practical DNT testing. AOPs were considered promising tools to promote test systems development according to regulatory needs. Moreover, the AOP concept was identified as an important guiding principle to assemble predictive integrated testing strategies (ITSs) for DNT. 
The recommendations on a roadmap towards AOP-based DNT testing is considered a stepwise approach, operating initially with incomplete AOPs for compound grouping, and focussing on key events of neurodevelopment. Next steps to be considered in follow-up activities are the use of case studies to further apply the AOP concept in regulatory DNT testing, making use of AOP intersections (common key events) for economic development of screening assays, and addressing the transition from qualitative descriptions to quantitative network modelling.JRC.I.5-Systems Toxicolog
Influence of sea ice decline, atmospheric warming, and glacier width on marine-terminating outlet glacier behavior in northwest Greenland at seasonal to interannual timescales.

[1] Discharge from marine-terminating outlet glaciers represents a key component of the Greenland Ice Sheet mass budget and observations suggest that mass loss from northwest Greenland has recently accelerated. Despite this, the factors controlling outlet glacier dynamics within this region have been comparatively poorly studied. Here we use remotely sensed data to investigate the influence of atmospheric, oceanic, and glacier-specific controls on the frontal position of Alison Glacier (AG), northwest Greenland, and nine surrounding outlet glaciers. AG retreated by 9.7 km between 2001 and 2005, following at least 25 years of minimal change. Results suggest that sea ice and air temperatures influence glacier frontal position at seasonal and interannual timescales. However, the response of individual outlet glaciers to forcing was strongly modified by factors specific to each glacier, specifically variations in fjord width and terminus type. Overall, our results underscore the need to consider these factors in order to interpret recent rapid changes and predict the dynamic response of marine-terminating outlet glaciers to atmospheric and oceanic forcing