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Nuclear Theory·nucl-th

Friday·February 18, 2022

8 papers—4 primary·4 cross-listed

All8Primary4Cross-lists4
  1. 05

    DIS physics at the EIC and LHeC and connections to the future LHC and A programs

    T. J. Hobbs🇺🇸

    Deeply-inelastic scattering (DIS) stands to enter a golden age with the prospect of precision programs at the Electron-Ion Collider (EIC) and Large Hadron-electron Collider (LHeC). While these programs will be of considerable importance to resolving longstanding issues in (non)perturbative QCD as well as hadronic and nuclear structure, they will also have valuable implications for a wider range of physics at the Energy and Intensity Frontiers, including at the High-Luminosity LHC (HL-LHC) and future facilities. In this plenary contribution, we highlight a number of salient examples of the potential HEP impact from the complementary EIC and LHeC programs drawn from their respective Yellow Report and Whitepaper. Interested readers are encouraged to consult the extensive studies and literature from which these examples are taken for more detail.

    ↳ hep-phhep-thnucl-thSciPost Phys.Proc.(2022)·2 citations
  2. 06

    Leading twist GTMDs at nonzero skewness and Wigner distributions in boost-invariant longitudinal position space

    Tanmay Maji🇨🇳 · Chandan Mondal🇨🇳 · Daekyoung Kang🇨🇳

    We investigate the leading twist quark generalized transverse momentum distributions (GTMDs) at nonzero skewness in a light-front quark-diquark model for the nucleon motivated by soft-wall AdS/QCD. The boost-invariant longitudinal coordinate, , is identified as the Fourier conjugate of the skewness. The Fourier transform of the GTMDs with respect to the skewness variable can be employed to provide the Wigner distributions in the boost-invariant longitudinal position space , the coordinate conjugate to light-front time, . The Wigner distributions in the longitudinal position space exhibit diffraction patterns, which are analogous to the diffractive scattering of a wave in optics.

    ↳ hep-phhep-thnucl-thPRD(2022)·24 citations
  3. 07

    In-medium hadronization of heavy quarks and its effect on charmed meson and baryon distributions in heavy-ion collisions

    Andrea Beraudo🇮🇹 · Arturo De Pace🇮🇹 · Marco Monteno🇮🇹 · Marzia Nardi🇮🇹 · Francesco Prino🇮🇹

    We present a new model for the description of heavy-quark hadronization in relativistic heavy-ion collisions in the presence of a reservoir of lighter thermal particles with which recombination can occur leading to the formation of color-singlet clusters. Color neutralization is assumed to occur locally, within the same fluid cell occupied by the heavy quark and it proceeds via the recombination of the latter with light antiquarks (quarks) or diquarks (anti-diquarks), which are assumed to be present in the medium with thermal abundance as effective degrees of freedom around the QCD crossover temperature . Typically the resulting color-singlet clusters have quite low invariant mass, in most of the cases below 4 GeV, and in this case they are assumed to undergo an isotropic 2-body decay in their local rest-frame. Heavier clusters are instead fragmented as Lund strings. The possibility of recombination with light diquarks enhances the yields of charmed baryons, in qualitative agreement with recent measurements. The assumption of local color neutralization leads to a strong space-momentum correlation, which provides a substantial enhancement of the collective flow of the final-state charmed hadrons, affecting both their momentum and their angular distributions

    ↳ hep-phnucl-thEPJC(2022)·44 citations
  4. 08

    Effect of the neutron quadrupole distribution in the TaO cation

    Gleb Penyazkov · Leonid V. Skripnikov · Alexander V. Oleynichenko · Andréi V. Zaitsevskii

    We estimate the effect of the tensor parity nonconserving (PNC) interaction in the TaO molecular cation. It can be used to probe the unknown quadrupole distribution of the neutrons inside the Ta nucleus. To this end, we evaluate the constant which characterizes this interaction using the relativistic Fock space coupled cluster theory for electronic structure modelling. The state of the TaO cation which can be used to measure the PNC effect is found to be the ground one in agreement with the previous theoretical study.

    ↳ physics.atom-phnucl-thphysics.chem-phChem.Phys.Lett.(2022)·4 citations

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first authorsco-authorsvia INSPIRE