pinecone/core-2020-05-10-deduplication huggingface dataset:
The insidious boosting of TP-AGB stars in intermediate-age Magellanic
  Cloud clusters

(Abridged) In the recent controversy about the role of TP-AGB stars in
evolutionary population synthesis (EPS) models of galaxies, one particular
aspect is puzzling: TP-AGB models aimed at reproducing the lifetimes and
integrated fluxes of the TP-AGB phase in Magellanic Cloud (MC) clusters, when
incorporated into EPS models, are found to overestimate the TP-AGB contribution
in resolved star counts and integrated spectra of galaxies. In this paper, we
call attention to a particular evolutionary aspect that in all probability is
the main cause of this conundrum. As soon as stellar populations intercept the
ages at which RGB stars first appear, a sudden change in the lifetime of the
core He-burning phase causes a temporary boost in the production rate of
subsequent evolutionary phases, including the TP-AGB. For a timespan of about
0.1 Gyr, triple TP-AGB branches develop at slightly different initial masses,
causing their frequency and contribution to the integrated luminosity of the
stellar population to increase by a factor of 2. The boost occurs just in the
proximity of the expected peak in the TP-AGB lifetimes, and for ages of 1.6
Gyr. Coincidently, this relatively narrow age interval happens to contain the
few very massive MC clusters that host most of the TP-AGB stars used to
constrain stellar evolution and EPS models. This concomitance makes the
AGB-boosting particularly insidious in the context of present EPS models. The
effect brings about three main consequences. (1) Present estimates of the
TP-AGB contribution to the integrated light of galaxies derived from MC
clusters, are biased towards too large values. (2) The relative TP-AGB
contribution of single-burst populations falling in this critical age range
cannot be accurately derived by the fuel consumption theorem. (3) A careful
revision of AGB star populations in intermediate-age MC clusters is urgently
demanded.Comment: ApJ accepted, 12 page
Measurement of the production cross section for a W boson and two b jets
  in pp collisions at sqrt(s) = 7 TeV

The production cross section for a W boson and two b jets is measured using
proton-proton collisions at sqrt(s) = 7 TeV in a data sample collected with the
CMS experiment at the LHC corresponding to an integrated luminosity of 5.0
inverse femtobarns. The W + b b-bar events are selected in the W to mu nu decay
mode by requiring a muon with transverse momentum pt > 25 GeV and
pseudorapidity abs(eta) < 2.1, and exactly two b-tagged jets with pt > 25 GeV
and abs(eta) < 2.4. The measured W + b b-bar production cross section in the
fiducial region, calculated at the level of final-state particles, is sigma(pp
to W + b b-bar) x B(W to mu nu) = 0.53 +/- 0.05 (stat.) +/- 0.09 (syst.) +/-
0.06 (theo.) +/- 0.01 (lum.) pb, in agreement with the standard model
prediction. In addition, kinematic distributions of the W + b b-bar system are
in agreement with the predictions of a simulation using MADGRAPH and PYTHIA.Comment: Replaced with published version. Added journal reference and DO
Search for Spatial Structures at Scales $Z\sim{1}$; 3, The Effect of Lensing on QSO?

We carried out a search for peak inhomogeneities in the distribution of matter - namely clumps and voids, within the range Z ~ 1-3. We used a new method, based on the lensing of quasars by a combination of lenses, belonging to the above sought inhomogeneities in the matter distribution. This work confirms the evidence of the existence of inhomogeneities found by us earlier - of a clump (superattractor N.1), and of a void (supervoid). Besides, the existence of a new gigantic clump (superattractor N.2) was also discovered at Z ~ 3. These clumps could well serve as centers of the Bose-condensation in the early Universe; in particular - as Anselm's arion condensate, which leads to the formation of quasiperiodic structures with a period p ~ 100-200 Mpc
Vertex Ring-Indexed Lie Algebras

Infinite-dimensional Lie algebras are introduced, which are only partially
graded, and are specified by indices lying on cyclotomic rings. They may be
thought of as generalizations of the Onsager algebra, but unlike it, or its
sl(n) generalizations, they are not subalgebras of the loop algebras associated
with sl(n). In a particular interesting case associated with sl(3), their
indices lie on the Eisenstein integer triangular lattice, and these algebras
are expected to underlie vertex operator combinations in CFT, brane physics,
and graphite monolayers.Comment: Plain LaTex2e, 7 page
Geometric classification of the torsion tensor in space-time

Torsion appears in literature in quite different forms. Generally, spin is considered to be the source of torsion, but there are several other possibilities in which torsion emerges in different contexts. In some cases a phenomenological counterpart is absent, in some other cases torsion arises from sources without spin as a gradient of a scalar field. Accordingly, we propose two classification schemes. The first one is based on the possibility to construct torsion tensors from the product of a covariant bivector and a vector and their respective space-time properties. The second one is obtained by starting from the decomposition of torsion into three irreducible pieces. Their space-time properties again lead to a complete classification. The classifications found are given in a U_4, a four dimensional space-time where the torsion tensors have some peculiar properties. The irreducible decomposition is useful since most of the phenomenological work done for torsion concerns four dimensional cosmological models. In the second part of the paper two applications of these classification schemes are given. The modifications of energy-momentum tensors are considered that arise due to different sources of torsion. Furthermore, we analyze the contributions of torsion to shear, vorticity, expansion and acceleration. Finally the generalized Raychaudhuri equation is discussed
Almost the supersymmetric standard model from intersecting D6-branes on the Z'(6) orientifold

Intersecting stacks of supersymmetric fractional branes on the Z_6' orientifold may be used to construct the supersymmetric Standard Model. If a,b are the stacks that generate the SU(3)_{colour} and SU(2)_L gauge particles, then, in order to obtain {\em just} the chiral spectrum of the (supersymmetric) Standard Model (with non-zero Yukawa couplings to the Higgs mutiplets), it is necessary that the number of intersections a \cap b of the stacks a and b, and the number of intersections a \cap b' of a with the orientifold image b' of b satisfy (a \cap b,a \cap b')=(2,1) or (1,2). It is also necessary that there is no matter in symmetric representations of the gauge group, and not too much matter in antisymmetric representations, on either stack. Fractional branes having all of these properties may be constructed on the Z_6' orientifold. We construct a (four-stack) model with two further stacks, each with just a single brane, which has precisely the matter spectrum of the supersymmetric Standard Model, including a single pair of Higgs doublets. However, the gauge group is SU(3)_{\rm colour} x SU(2)_L x U(1)_Y x U(1)_H. Only the Higgs doublets are charged with respect to U(1)_H
Identifying aggregate supply and demand shocks in small open economies:empirical evidence from African countries

This paper uses a tri-variate structural VAR with a long-run identification scheme, akin to the Blanchard and Quah method, to identify external and domestic supply and demand shocks in 22 African countries between 1980 and 2005. Domestic supply shocks are found to be the most important factor contributing over 70% to output fluctuations in these countries, with external shocks playing a relatively minor role. A partial correlation analysis between the identified shocks and a measure of the fiscal policies of the countries revealed that the fiscal policies pursued by most of the countries during the period are counter-cyclical
Quadrics on complex Riemannian spaces of constant curvature, separation of variables, and the Gaudin magnet

Integrable systems that are connected with orthogonal separation of variables in complex Riemannian spaces of constant curvature are considered herein. An isomorphism with the hyperbolic Gaudin magnet, previously pointed out by one of the authors, extends to coordinates of this type. The complete classification of these separable coordinate systems is provided by means of the corresponding L matrices for the Gaudin magnet. The limiting procedures (or  calculus) which relate various degenerate orthogonal coordinate systems play a crucial role in the classification of all such systems
Inner products involving q-differences: the little q-Laguerre-Sobolev polynomials

22 pages, no figures.-- MSC codes: Primary 33C25; Secondary 33D45.-- Issue title: "Higher transcendental functions and their applications".MR#: MR1765938 (2001d:33018)Zbl#: Zbl 0957.33008In this paper, polynomials which are orthogonal with respect to the inner product $$\multline\langle p,r\rangle_S=\sum^\infty_{k=0}p(q^k)r(q^k) {(aq)^k(aq;q)_\infty\over(q;q)_k}\\ +\lambda\sum^\infty_{k=0} (D_qp)(q^k)(D_qr)(q^k){(aq)^k(aq;q)_\infty\over(q;q)_k},\endmultline$$ where $D_q$ is the $q$-difference operator, $\lambda\geq0,\ 0<q<1$ and $0<aq<1$, are studied. For these polynomials, algebraic properties and $q$-difference equations are obtained as well as their relation with the monic little $q$-Laguerre polynomials. Some properties of the zeros of these polynomials are also deduced. Finally, the relative asymptotics $\{Q_n(x)/p_n(x;a )\}_n$ on compact subsets of ${\bf C}\sbs[0,1]$ is given, where $Q_n(x)$ is the $n$th degree monic orthogonal polynomial with respect to the above inner product and $p_n(x;a )$ denotes the monic little $q$-Laguerre polynomial of degree $n$.E.G. wishes to acknowledge partial financial support by Dirección General de Enseñanza Superior
(DGES) of Spain under Grant PB-96-0952. The research of F.M. was partially supported by DGES
of Spain under Grant PB96-0120-C03-01 and INTAS Project 93-0219 Ext. J.J.M.B. also wishes to
acknowledge partial financial support by Junta de Andalucía, Grupo de Investigación FQM 0229.Publicad
Probing the quark-gluon interaction with hadrons

We present a unified picture of mesons and baryons in the
Dyson-Schwinger/Bethe-Salpeter approach, wherein the quark-gluon and
quark-(anti)quark interaction follow from a systematic truncation of the QCD
effective action and includes all its tensor structures.
  The masses of some of the ground state mesons and baryons are found to be in
reasonable agreement with the expectations of a `quark-core calculation',
suggesting a partial insensitivity to the details of the quark-gluon
interaction. However, discrepancies remain in the meson sector, and for excited
baryons, that suggest higher order corrections are relevant and should be
investigated following the methods outlined herein.Comment: 6 pages, 5 figures, 3 tables. Version to appear in PL
Measurement of the electroweak production of dijets in association with a Z-boson and distributions sensitive to vector boson fusion in proton-proton collisions at √s= 8 TeV using the ATLAS detector

Measurements of fiducial cross sections for the electroweak production of two jets in association with a Z-boson are presented. The measurements are performed using 20.3 fb−1 of proton-proton collision data collected at a centre-of-mass energy of s√ = 8 TeV by the ATLAS experiment at the Large Hadron Collider. The electroweak component is extracted by a fit to the dijet invariant mass distribution in a fiducial region chosen to enhance the electroweak contribution over the dominant background in which the jets are produced via the strong interaction. The electroweak cross sections measured in two fiducial regions are in good agreement with the Standard Model expectations and the background-only hypothesis is rejected with significance above the 5σ level. The electroweak process includes the vector boson fusion production of a Z-boson and the data are used to place limits on anomalous triple gauge boson couplings. In addition, measurements of cross sections and differential distributions for inclusive Z-boson-plus-dijet production are performed in five fiducial regions, each with different sensitivity to the electroweak contribution. The results are corrected for detector effects and compared to predictions from the Sherpa and Powheg event generators
Massive open star clusters using the VVV survey III. A young massive cluster at the far edge of the Galactic bar

Context. Young massive clusters are key to map the Milky Way’s structure, and near-infrared large area sky surveys have contributed strongly to the discovery of new obscured massive stellar clusters. Aims. We present the third article in a series of papers focused on young and massive clusters discovered in the VVV survey. This article is dedicated to the physical characterization of VVV CL086, using part of its OB-stellar population. Methods. We physically characterized the cluster using JHKS near-infrared photometry from ESO public survey VVV images, using the VVV-SkZ pipeline, and near-infrared K-band spectroscopy, following the methodology presented in the first article of the series. Results. Individual distances for two observed stars indicate that the cluster is located at the far edge of the Galactic bar. These stars, which are probable cluster members from the statistically field-star decontaminated CMD, have spectral types between O9 and B0 V. According to our analysis, this young cluster (1.0 Myr < age < 5.0 Myr) is located at a distance of 11+5-6 kpc, and we estimate a lower limit for the cluster total mass of (2.8+1.6-1.4) · 103 M⊙. It is likely that the cluster contains even earlier and more massive stars.S.R.A. and A.N.C. were supported by the GEMINI-CONICYT project number 32110005. S.R.A. was also supported by the FONDECYT project No. 3140605. The VVV Survey is supported by ESO, by BASAL Center for Astrophysics and Associated Technologies PFB-06, by FONDAP Center for Astrophysics 15010003, and by the Ministry for the Economy, Development, and Tourism’s Programa Inicativa Científica Milenio through grant IC12009, awarded to The Millennium Institute of Astrophysics (MAS). Support for J.B. is provided by FONDECYT Regular No. 1120601, P.A. acknowledges support from ALMA-CONICYT project number 31110002 and D.M., from FONDECYT No. 1130196. M.G. is financed by the GEMINI-CONICYT Fund, allocated to Project 32110014. D.G. gratefully acknowledges support from the Chilean BASAL Centro de Excelencia en Astrofísica y Tecnologías Afines (CATA) grant PFB-06/2007. R.K.S. acknowledges partial support from FONDECYT through grant 1130140, and CNPq/Brazil through projects 310636/2013-2 and 481468/2013-7. M.C. acknowledges additional support from FONDECYT through grants #1110326 and 1141141. The work of I.N. and A.M. is partially supported by the Spanish Ministerio de Economía y Competitividad (Mineco) under grant AYA2012-39364-C02-02
The anisotropic λ  -deformed SU(2) model is integrable

The all-loop anisotropic Thirring model interpolates between the WZW model and the non-Abelian T-dual of the anisotropic principal chiral model. We focus on the SU(2) case and we prove that it is classically integrable by providing its Lax pair formulation. We derive its underlying symmetry current algebra and use it to show that the Poisson brackets of the spatial part of the Lax pair, assume the Maillet form. In this way we procure the corresponding r and s matrices which provide non-trivial solutions to the modified Yang–Baxter equation
Manual mapping of drumlins in synthetic landscapes to assess operator effectiveness

Mapped topographic features are important for understanding processes that sculpt the Earth's surface. This paper presents maps that are the primary product of an exercise that brought together 27 researchers with an interest in landform mapping wherein the efficacy and causes of variation in mapping were tested using novel synthetic DEMs containing drumlins. The variation between interpreters (e.g. mapping philosophy, experience) and across the study region (e.g. woodland prevalence) opens these factors up to assessment. A priori known answers in the synthetics increase the number and strength of conclusions that may be drawn with respect to a traditional comparative study. Initial results suggest that overall detection rates are relatively low (34–40%), but reliability of mapping is higher (72–86%). The maps form a reference datase
Pseudorapidity distribution of charged hadrons in proton-proton collisions at sqrt(s) = 13 TeV

The pseudorapidity distribution of charged hadrons in pp collisions at sqrt(s) =13 TeV is measured using a data sample obtained with the CMS detector, operated at zero magnetic field, at the CERN LHC. The yield of primary charged long-lived hadrons produced in inelastic pp collisions is determined in the central region of the CMS pixel detector (abs(eta)<2) using both hit pairs and reconstructed tracks. For central pseudorapidities (abs(eta)<0.5), the charged-hadron multiplicity density is dN/d(eta)[charged,abs(eta) < 0.5] = 5.49 +/- 0.01 (stat) +/- 0.17 (sys), a value obtained by combining the two methods. The result is compared to predictions from Monte Carlo event generators and to similar measurements made at lower collision energies
On the measured lifetime of light hypernuclei 3 Λ H and 4 Λ H

A statistical combination of the experimental lifetime estimations available in the literatures is performed for 3 Λ H and 4 Λ H, including several recent measurements. The combined average values of the lifetime for 3 Λ H and 4 Λ H are respectively <math altimg="si1.gif" xmlns="http://www.w3.org/1998/Math/MathML"><msubsup><mrow><mn>216</mn></mrow><mrow><mo>−</mo><mn>16</mn></mrow><mrow><mo>+</mo><mn>19</mn></mrow></msubsup><mtext> </mtext><mtext>ps</mtext></math> and <math altimg="si2.gif" xmlns="http://www.w3.org/1998/Math/MathML"><msubsup><mrow><mn>192</mn></mrow><mrow><mo>−</mo><mn>18</mn></mrow><mrow><mo>+</mo><mn>20</mn></mrow></msubsup><mtext> </mtext><mtext>ps</mtext></math> with a reduced <math altimg="si3.gif" xmlns="http://www.w3.org/1998/Math/MathML"><msup><mrow><mi>χ</mi></mrow><mrow><mn>2</mn></mrow></msup></math> of 0.89 and 0.48. A new insight into the lifetime estimation of the HypHI Phase 0 experiment by a Bayesian approach is also presented. In this approach, several different prior distributions including the combination of previous lifetime data and a Jeffrey prior are used. The principal mode and the smallest credible interval at 68% of the posterior distribution, given by the prior belief of the previous measurements, are <math altimg="si4.gif" xmlns="http://www.w3.org/1998/Math/MathML"><msubsup><mrow><mn>217</mn></mrow><mrow><mo>−</mo><mn>16</mn></mrow><mrow><mo>+</mo><mn>19</mn></mrow></msubsup><mtext> </mtext><mtext>ps</mtext></math> and <math altimg="si5.gif" xmlns="http://www.w3.org/1998/Math/MathML"><msubsup><mrow><mn>194</mn></mrow><mrow><mo>−</mo><mn>18</mn></mrow><mrow><mo>+</mo><mn>20</mn></mrow></msubsup><mtext> </mtext><mtext>ps</mtext></math> respectively for 3 Λ H and 4 Λ H. The two employed approaches have revealed that the lifetime of hypernuclei 3 Λ H and 4 Λ H can be shorter than the Λ –hyperon lifetime
Holographic metals and insulators with helical symmetry

Homogeneous, zero temperature scaling solutions with Bianchi VII spatial geometry are constructed in Einstein-Maxwell-Dilaton theory. They correspond to quantum critical saddle points with helical symmetry at finite density. Assuming AdS 5 UV asymptotics, the small frequency/(temperature) dependence of the AC/(DC) electric conductivity along the director of the helix are computed. A large class of insulating and conducting anisotropic phases is found, as well as isotropic, metallic phases. Conduction can be dominated by dissipation due to weak breaking of translation symmetry or by a quantum critical current
Electroweak phase transition in Georgi–Machacek model

The Georgi–Machacek model extends the standard model Higgs sector by adding two isospin triplet scalar fields and imposing global <math altimg="si1.gif" xmlns="http://www.w3.org/1998/Math/MathML"><msub><mrow><mtext>SU(2)</mtext></mrow><mrow><mi>R</mi></mrow></msub></math> symmetry on them. A feature of the model is that the triplets can acquire a large vacuum expectation value without conflicting with the current experimental bound on the ρ parameter. We investigate the electroweak phase transition in the Georgi–Machacek model by evaluating the finite-temperature effective potential of the Higgs sector. The electroweak phase transition can be sufficiently strong in a large parameter space when the triplets acquire a vacuum expectation value of <math altimg="si2.gif" xmlns="http://www.w3.org/1998/Math/MathML"><mi>O</mi><mo stretchy="false">(</mo><mn>10</mn><mo stretchy="false">)</mo><mtext> </mtext><mtext>GeV</mtext></math> , opening a possibility to realize successful electroweak baryogenesis
Adiabatic hydrodynamics: the eightfold way to dissipation

Hydrodynamics is the low-energy effective field theory of any interacting quantum theory, capturing the long-wavelength fluctuations of an equilibrium Gibbs densitymatrix. Conventionally, one views the effective dynamics in terms of the conserved currents, which should be expressed via the constitutive relations in terms of the fluid velocity and the intensive parameters such as the temperature, chemical potential, etc. . . However, not all constitutive relations are acceptable; one has to ensure that the second law of thermodynamics is satisfied on all physical configurations. In this paper, we provide a complete solution to hydrodynamic transport at all orders in the gradient expansion compatible with the second law constraint
Refining light stop exclusion limits with W+W− cross sections

If light supersymmetric top (stop) quarks are produced at the LHC and decay via on- or off-shell W -bosons they can be expected to contribute to a precision W+W− cross section measurement. Using the latest results of the CMS experiment, we revisit constraints on the stop quark production and find that this measurement can exclude portions of the parameter space not probed by dedicated searches. In particular we can exclude light top squarks up to 230 GeV along the line separating three- and four-body decays, t˜1→χ˜10W(⁎)b . We also study the exclusion limits in case when the branching ratio for these decays is reduced and show significant improvement over previously existing limits
Molecular characterization of an endophytic Phomopsis\ud
liquidambaris CBR-15 from Cryptolepis buchanani Roem.\ud
and impact of culture media on biosynthesis of antimicrobial\ud
metabolites

An endophytic fungus Phomopsis liquidambaris CBR-15, was isolated from Cryptolepis buchanani Roem. (Asclepiadaceae) and identified by its characteristic culture morphology and molecular analysis of the ITS region of rDNA and intervening 5.8S rRNA gene. The impact of different culture media on biosynthesis of antimicrobial metabolites was tested by disc diffusion assay. Polyketide synthase gene (PKS) of the endophytic fungus was investigated using three pairs of degenerate primers LC1–LC2c, LC3–LC5c and KS3–KS4c by PCR. TLCbioautography method was employed to detect the antimicrobial metabolites. Antimicrobial metabolites fractionated with ethyl acetate extract showed significant antimicrobial activity against the test bacteria and fungi. Biosynthesis of antimicrobial metabolites was optimum as depicted by zone of inhibition from ethyl acetate extract cultured in potato dextrose broth. Strain CBR-15 was identified as Phomopsis liquidambaris and PKS genes of the fungus were amplified with LC3–LC5c and KS3–KS4c sets of degenerate primers