PaperPanorama
FAQ

Nuclear Theory·nucl-th

Thursday·November 12, 2015

7 papers—3 primary·4 cross-listed

All7Primary3Cross-lists4
  1. 01

    [Submitted on 11 Nov 2015]

    Investigating the scaling of higher-order flows in relativistic heavy-ion collisions

    Chun-Jian Zhang🇨🇳 · Jun Xu🇨🇳

    The modified number of constituent quark (NCQ) scaling for mesons and baryons and the scaling relation for higher-order anisotropic flows, which were observed experimentally, have been investigated at top RHIC energy. It has been found that the modified NCQ scaling can not be obtained from the naive coalescence even by taking into account event-by-event fluctuations but may be due to hadronic afterburner or thermal freeze-out. In addition, we observed that the behavior of the ratio is sensitive to the partonic interaction, and it is different for mesons and baryons from the naive coalescence but is expected to be almost the same experimentally.

    Comments:
    10 pages, 7 figures
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Experiment (hep-ex); Nuclear Experiment (nucl-ex)
    arXiv:
    1511.03394 [pdf]
    PRC(2016)·7 citations
  2. 02

    [Submitted on 11 Nov 2015]

    Solvababe supersymmetric algebraic model for descriptions of transitional even and odd mass nuclei near the critical point of the spherical to unstable shapes

    M. A. Jafarizadeh · M. Ghapanvariy · N. Fouladiz

    Exactly solvable solution for the spherical to gamma - unstable transition in transitional nuclei based on dual algebraic structure and nuclear supersymmetry concept is proposed. The duality relations between the unitary and quasispin algebraic structures for the boson and fermion systems are extended to mixed boson-fermion system. It is shown that the relation between the even-even and odd-A neighbors implied by nuclear supersymmetry in addition to dynamical symmetry limits can be also used for transitional regions. The experimental evidences are presented for even- even [E(5)] and odd-mass [E(5/4)] nuclei near the critical point symmetry.

    Comments:
    8 pages, 6 figures
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    1511.03494 [pdf]
    0 citations
  3. 03

    [Submitted on 11 Nov 2015]

    Bayesian parameter estimation for effective field theories

    S. Wesolowski🇺🇸 · N. Klco🇺🇸 · R.J. Furnstahl🇺🇸 · D.R. Phillips🇺🇸 · A. Thapaliya🇺🇸

    We present procedures based on Bayesian statistics for estimating, from data, the parameters of effective field theories (EFTs). The extraction of low-energy constants (LECs) is guided by theoretical expectations in a quantifiable way through the specification of Bayesian priors. A prior for natural-sized LECs reduces the possibility of overfitting, and leads to a consistent accounting of different sources of uncertainty. A set of diagnostic tools are developed that analyze the fit and ensure that the priors do not bias the EFT parameter estimation. The procedures are illustrated using representative model problems, including the extraction of LECs for the nucleon mass expansion in SU(2) chiral perturbation theory from synthetic lattice data.

    Comments:
    40 pages, 40 figures. Final version to appear in JPhysG
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex); Data Analysis, Statistics and Probability (physics.data-an)
    arXiv:
    1511.03618 [pdf]
    J.Phys.G(2016)·145 citations
  4. 04

    [Submitted on 3 Nov 2015] (cross-list from hep-ph)

    Jet quenching in high-energy heavy-ion collisions

    Guang-You Qin🇨🇳 · Xin-Nian Wang🇨🇳

    Jet quenching in high-energy heavy-ion collisions can be used to probe properties of hot and dense quark-gluon plasma. We provide a brief introduction to the concept and framework for the study of jet quenching. Different approaches and implementation of multiple scattering and parton energy loss are discussed. Recent progresses in the theoretical and phenomenological studies of jet quenching in heavy-ion collisions at RHIC and LHC are reviewed.

    Comments:
    review for QGP5, 68 pages, 34 figures
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
    arXiv:
    1511.00790 [pdf]
    IJMPE(2015)·443 citations
  5. 05

    [Submitted on 11 Nov 2015] (cross-list from hep-ph)

    Some Aspects of Three-Quark Potentials

    Oleg Andreev🇷🇺

    We analytically evaluate the expectation value of a baryonic Wilson loop in a holographic model of an SU(3) pure gauge theory. We then discuss three aspects of a static three-quark potential: an aspect of universality which concerns properties independent of a geometric configuration of quarks; a heavy diquark structure; and a relation between the three and two-quark potentials.

    Comments:
    35 pages, many figures; v2: appendix and two figures added, minor improvements in presentation; v3: improved presentation, some points clarified, reference added; v4: typo corrected
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Lattice (hep-lat); High Energy Physics — Theory (hep-th); Nuclear Theory (nucl-th)
    arXiv:
    1511.03484 [pdf]
    PRD(2016)·40 citations
  6. 06

    [Submitted on 11 Nov 2015] (cross-list from cond-mat.quant-gas)

    Chiral superfluid on a sphere

    Sergej Moroz🇺🇸 · Carlos Hoyos🇪🇸 · Leo Radzihovsky🇺🇸

    We consider a spinless fermionic superfluid living on a two-dimensional sphere. Using superfluid hydrodynamics we show that the ground state necessarily exhibits topological defects: either a pair of elementary vortices or a domain wall between phases. In the topologically nontrivial BCS phase we identify the chiral fermion modes localized on the topological defects and compute their low-energy spectrum.

    Comments:
    8 pages, 2 figures, published version
    Subjects:
    Quantum Gases (cond-mat.quant-gas); High Energy Physics — Theory (hep-th); Nuclear Theory (nucl-th)
    arXiv:
    1511.03502 [pdf]
    PRB(2016)·14 citations
  7. 07

    [Submitted on 11 Nov 2015] (cross-list from hep-ph)

    Probing proton fluctuations with asymmetric rapidity correlations

    Adam Bzdak🇵🇱 · Kevin Dusling🇺🇸

    Intrinsic fluctuations of the proton saturation momentum generate asymmetric rapidity distributions on an event-by-event basis. We argue that the asymmetric component, , of the orthogonal polynomial decomposition of the two-particle rapidity correlation function is a sensitive probe to this distribution of fluctuations. We present a simple model connecting the experimentally measured to the variance, , of the distribution of the logarithm of the proton saturation scale. We find that describes the asymmetric component of the rapidity correlations recently measured by the ATLAS collaboration.

    Comments:
    Accepted for publication in Phys. Rev. C
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
    arXiv:
    1511.03620 [pdf]
    PRC(2016)·23 citations

Affiliations

first authorsco-authorsvia INSPIRE