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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

Affiliations

first authorsco-authorsvia INSPIRE