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Nuclear Theory·nucl-th

Monday·July 6, 2015

5 papers—2 primary·3 cross-listed

All5Primary2Cross-lists3
  1. 03

    [Submitted on 1 Jul 2015] (cross-list from hep-ph)

    A practical parametrization for line shapes of near-threshold states

    C. Hanhart🇩🇪 · Yu.S. Kalashnikova🇷🇺 · P. Matuschek🇩🇪 · R.V. Mizuk🇷🇺 · A.V. Nefediev🇷🇺 · Q. Wang🇩🇪

    Numerous quarkonium(like) states lying near -wave thresholds are observed experimentally. We propose a self-consistent approach to these near-threshold states compatible with unitarity and analyticity. The underlying coupled-channel system includes a bare pole and an arbitrary number of elastic and inelastic channels treated fully nonperturbatively. The resulting analytical parametrization is ideally suited for a combined analysis of the data available in various channels that is exemplified by an excellent overall description of the data for the charged and states.

    Comments:
    LaTeX2e, 5 pages, 1 figure, typos corrected, version published in Phys. Rev. Lett
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Experiment (hep-ex); High Energy Physics — Lattice (hep-lat); Nuclear Theory (nucl-th)
    arXiv:
    1507.00382 [pdf]
    PRL(2015)·73 citations
  2. 04

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

    Spontaneous magnetization in high-density quark matter

    Y. Tsue (Kochi Univ., Japan)🇵🇹 · J. da Providencia (Univ. de Coimbra, Portugal)🇵🇹 · C. Providencia (Univ. de Coimbra, Portugal)🇵🇹 · M. Yamamura (Univ. de Coimbra, Portugal and Kansai Univ., Japan)🇵🇹 · H. Bohr (Danish Technical Univ., Denmark)🇩🇰

    It is shown that the spontaneous magnetization occurs due to the anomalous magnetic moments of quarks in the high-density quark matter under the tensor-type four-point interaction. The spin polarized condensate for each flavor of quark appears at high baryon density, which leads to the spontaneous magnetization due to the anomalous magnetic moments of quarks. The implications to the strong magnetic field in the compact stars is discussed.

    Comments:
    19 pages, 3 figures
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
    arXiv:
    1507.00801 [pdf]
    PTEP(2015)·14 citations
  3. 05

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

    Symmetric and Standard Matter-Neutrino Resonances Above Merging Compact Objects

    A. Malkus🇺🇸 · G. C. McLaughlin🇺🇸 · R. Surman🇺🇸

    Matter-neutrino resonances (MNR) can occur in environments where the flux of electron antineutrinos is greater than the flux of electron neutrinos. These resonances may result in dramatic neutrino flavor transformation. Compact object merger disks are an example of an environment where electron antineutrinos outnumber neutrinos. We study MNR resonances in several such disk configurations and find two qualitatively different types of matter-neutrino resonances: a standard MNR and a symmetric MNR. We examine the transformation that occurs in each type of resonance and explore the consequences for nucleosynthesis.

    Comments:
    15 pages, 5 figures
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Astrophysical Phenomena (astro-ph.HE); Nuclear Theory (nucl-th)
    arXiv:
    1507.00946 [pdf]
    PRD(2016)·68 citations

Affiliations

first authorsco-authorsvia INSPIRE