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Nuclear Theory·nucl-th

Thursday·October 8, 2015

9 papers—6 primary·3 cross-listed

All9Primary6Cross-lists3
  1. 07

    [Submitted on 7 Oct 2015] (cross-list from hep-ph)

    Looking for a hidden-charm pentaquark state with strangeness from decay into

    Hua-Xing Chen🇨🇳 · Li-Sheng Geng🇨🇳 · Wei-Hong Liang🇨🇳 · Eulogio Oset🇨🇳 · En Wang🇨🇳 · Ju-Jun Xie🇨🇳

    Assuming that the recently observed hidden-charm pentaquark state, , is of molecular nature as predicted in the unitary approach, we propose to study the decay of to search for the strangeness counterpart of the . There are three ingredients in the decay mechanism: the weak decay mechanism, the hadronization mechanism, and the finite state interactions in the meson-baryon system of strangeness and isospin and of the . All these have been tested extensively. As a result, we provide a genuine prediction of the differential cross section where a strangeness hidden-charm pentaquark state, the counterpart of the , can be clearly seen. The decay rate is estimated to be of similar magnitude as the observed by the LHCb collaboration.

    Comments:
    7 pages, 5 figures; typos corrected
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Experiment (hep-ex); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
    arXiv:
    1510.01803 [pdf]
    PRC(2016)·123 citations
  2. 08

    [Submitted on 7 Oct 2015] (cross-list from hep-ph)

    Accessing transversity GPDs in neutrino-production of a charmed meson

    B. Pire🇫🇷 · L. Szymanowski🇵🇱

    We demonstrate that the transversity chiral odd generalized parton distributions can be accessed through the azimuthal dependence of the nu N -> l D N' or nubar N -> l D N' differential cross sections, in the framework of the colinear QCD approach, where GPDs factorize from perturbatively calculable coefficient functions calculated up to order mc/Q.

    Comments:
    6 pages, 1 figure, 16th conference on Elastic and diffractive scattering, EDS Blois 2015, Borgo, Corsica, France, June 29th-July 4th, 2015
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Experiment (hep-ex); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
    arXiv:
    1510.01869 [pdf]
    Acta Phys.Polon.Supp.(2015)·6 citations
  3. 09

    [Submitted on 7 Oct 2015] (cross-list from astro-ph.HE)

    Stellar properties and nuclear matter constraints

    Mariana Dutra🇧🇷 · Odilon Lourenço🇧🇷 · Débora P. Menezes🇧🇷

    We have analyzed stellar properties of the relativistic mean-field (RMF) parametrizations shown to be consistent with the recently studied constraints related to nuclear matter, pure neutron matter, symmetry energy and its derivatives [Dutra et al., Phys. Rev. C 90, 055203 (2014)]. Our results show that only two RMF parametrizations do not allow the emergence of the direct Urca process, important aspect regarding the evolution of a neutron star. Moreover, among all approved RMF models, fourteen of them produce neutron stars with maximum masses inside the range , with being the solar mass. Only three models yield maximum masses above this range and a discussion on the inclusion of hyperons is presented. Finally, we have verified that the models satisfying the neutron star maximum mass constraint do not observe the squared sound velocity bound, namely, , corroborating recent findings. However, the recently proposed -cut scheme can make the RMF models consistent with both constraints depending on the isoscalar-vector interaction of each parametrization.

    Comments:
    Published version in Phys. Rev. C along with an erratum that corrects a technical mistake in the calculations concerning two specific parametrizations, namely, DDH\delta and DD-ME\delta. New corrected figures and tables regarding these two parametrizations are provided
    Subjects:
    High Energy Astrophysical Phenomena (astro-ph.HE); Nuclear Theory (nucl-th)
    arXiv:
    1510.02060 [pdf]
    PRC(2016)·95 citations

Affiliations

first authorsco-authorsvia INSPIRE