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Nuclear Theory·nucl-th

Wednesday·February 10, 2016

8 papers—5 primary·3 cross-listed

All8Primary5Cross-lists3
  1. 06

    [Submitted on 1 Feb 2016] (cross-list from hep-th)

    Holography Inspired Stringy Hadrons

    Jacob Sonnenschein🇮🇱

    Holography inspired stringy hadrons (HISH) is a set of models that describe hadrons: mesons, baryons and glueballs as strings in four dimensional space time. The models are based on a "map" from stringy hadrons of holographic confining backgrounds. In this note we review the "derivation" of the models. We start with a brief reminder of the passage from the AdS5xS5 string theory to certain flavored confining holographic models. We then describe the string configurations in holographic backgrounds that correspond to a Wilson line,a meson,a baryon and a glueball. The key ingredients of the four dimensional picture of hadrons are the "string endpoint mass" and the "baryonic string vertex". We determine the classical trajectories of the HISH. We review the current understanding of the quantization of the hadronic strings. We end with a summary of the comparison of the outcome of the HISH models with the PDG data about mesons and baryons. We extract the values of the tension, masses and intercepts from best fits, write down certain predictions for higher excited hadrons and present attempts to identify glueballs

    Comments:
    73 pages. typos corrected. references added. figures added. version published in Progress in Particle and Nuclear Physics. References added
    Subjects:
    High Energy Physics — Theory (hep-th); High Energy Physics — Experiment (hep-ex); High Energy Physics — Lattice (hep-lat); High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
    arXiv:
    1602.00704 [pdf]
    PPNP(2017)·40 citations
  2. 07

    [Submitted on 8 Feb 2016] (cross-list from hep-ph)

    Total Born cross section of -pair production in relativistic ion collisions from differential equations

    Roman N. Lee🇷🇺 · Kirill T. Mingulov🇷🇺

    We apply the differential equation method to the calculation of the total Born cross section of the process . We obtain explicit expression for the cross section exact in the relative velocity of the nuclei.

    Comments:
    5 pages, 2 figures, ancillary file MastersExpansion.m attached to submission
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th); Atomic Physics (physics.atom-ph)
    arXiv:
    1602.02463 [pdf]
    PLB(2016)·11 citations
  3. 08

    [Submitted on 9 Feb 2016] (cross-list from hep-ph)

    Constraints on large- parton distributions from new weak boson production and deep-inelastic scattering data

    A. Accardi🇺🇸 · L. T. Brady🇺🇸 · W. Melnitchouk🇺🇸 · J. F. Owens🇺🇸 · N. Sato🇺🇸

    We present a new set of leading twist parton distribution functions, referred to as "CJ15", which take advantage of developments in the theoretical treatment of nuclear corrections as well as new data. The analysis includes for the first time data on the free neutron structure function from Jefferson Lab, and new high-precision charged lepton and W-boson asymmetry data from Fermilab. These significantly reduce the uncertainty on the d/u ratio at large values of x and provide new insights into the partonic structure of bound nucleons.

    Comments:
    50 pages, 17 figures, 3 tables. Uncertainty bands revised. LO chi^2 values corrected in Table 1. Version to appear in Phys.Rev.D
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
    arXiv:
    1602.03154 [pdf]
    PRD(2016)·375 citations

Affiliations

first authorsco-authorsvia INSPIRE