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Nuclear Theory·nucl-th

Friday·August 4, 2017

4 papers—2 primary·2 cross-listed

All4Primary2Cross-lists2
  1. 03

    Hadron Resonance Gas with Repulsive Interactions and Fluctuations of Conserved Charges

    P. Huovinen🇵🇱 · P. Petreczky🇺🇸

    We discuss the role of repulsive baryon-baryon interactions in a hadron gas using relativistic virial expansion and repulsive mean field approaches. The fluctuations of the baryon number as well as strangeness-baryon correlations are calculated in the hadron resonance gas with repulsive interactions and compared with the recent lattice QCD results. In particular, we calculate the difference between the second and fourth order fluctuations and correlations of baryon number and strangeness, that have been proposed as probes of deconfinement. We show that for not too high temperatures these differences could be understood in terms of repulsive interactions.

    ↳ hep-phhep-latnucl-thPLB(2018)·82 citations
  2. 04

    Hard photoproduction of a diphoton with a large invariant mass

    A. Pedrak🇵🇱 · B. Pire🇫🇷 · L. Szymanowski🇵🇱 · J. Wagner🇵🇱

    The electromagnetic probe has proven to be a very efficient way to access the dimensional structure of the nucleon, particularly thanks to the exclusive Compton processes. We explore the hard photoproduction of a large invariant mass diphoton in the kinematical regime where the diphoton is nearly forward and its invariant mass is the hard scale enabling to factorize the scattering amplitude in terms of generalized parton distributions. This amplitude has a very peculiar and interesting analytic structure. We calculate unpolarized cross sections and the angular asymmetry triggered by a linearly polarized photon beam.

    ↳ hep-phhep-exnucl-exnucl-thPRD(2017)·62 citations

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first authorsco-authorsvia INSPIRE