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Nuclear Theory·nucl-th

Monday·February 12, 2018

5 papers—3 primary·2 cross-listed

All5Primary3Cross-lists2
  1. 04

    [Submitted on 7 Feb 2018] (cross-list from nucl-ex)

    Chiral magnetic effect search in p(d)+Au, Au+Au collisions at RHIC

    Jie Zhao (for the STAR collaboration)🇺🇸

    The chiral magnetic effect (CME) refers to charge separation along a strong magnetic field of single-handed quarks, caused by interactions with topological gluon fields from QCD vacuum fluctuations. A major background of CME measurements in heavy-ion collisions comes from resonance decays coupled with elliptical flow anisotropy. These proceedings present two new studies from STAR to shed further light on the background issue: (1) small system p+Au and d+Au collisions where the CME signal is not expected, and (2) pair invariant mass dependence where resonance peaks can be identified.

    Comments:
    Particles and Nuclei International Conference 2017 (PANIC2017) proceeding contribution. arXiv admin note: text overlap with arXiv:1712.00394
    Subjects:
    Nuclear Experiment (nucl-ex); High Energy Physics — Experiment (hep-ex); High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
    arXiv:
    1802.03283 [pdf]
    Int.J.Mod.Phys.Conf.Ser.(2018)·7 citations
  2. 05

    [Submitted on 9 Feb 2018] (cross-list from hep-lat)

    Three-body spectrum in a finite volume: the role of cubic symmetry

    M. Döring🇺🇸 · H.-W. Hammer🇩🇪 · M. Mai🇺🇸 · J.-Y. Pang🇩🇪 · A. Rusetsky🇩🇪 · J. Wu🇩🇪

    The three-particle quantization condition is partially diagonalized in the center-of-mass frame by using cubic symmetry on the lattice. To this end, instead of spherical harmonics, the kernel of the Bethe-Salpeter equation for particle-dimer scattering is expanded in the basis functions of different irreducible representations of the octahedral group. Such a projection is of particular importance for the three-body problem in the finite volume due to the occurrence of three-body singularities above breakup. Additionally, we study the numerical solution and properties of such a projected quantization condition in a simple model. It is shown that, for large volumes, these solutions allow for an instructive interpretation of the energy eigenvalues in terms of bound and scattering states.

    Comments:
    16 pages, 7 figures, supplemental material; version accepted by journal
    Subjects:
    High Energy Physics — Lattice (hep-lat); Nuclear Theory (nucl-th)
    arXiv:
    1802.03362 [pdf]
    PRD(2018)·149 citations

Affiliations

first authorsco-authorsvia INSPIRE