Nuclear Theory·nucl-th

Thursday·July 16, 2020

12 papers—6 primary·6 cross-listed

07
[Submitted on 14 Jul 2020] (cross-list from hep-ph)
Jet-based measurements of Sivers and Collins asymmetries at the future Electron-Ion Collider
Miguel Arratia🇺🇸 · Zhong-Bo Kang🇺🇸 · Alexei Prokudin🇺🇸 · Felix Ringer🇺🇸
We present predictions and projections for hadron-in-jet measurements and electron-jet azimuthal correlations at the future Electron-Ion Collider (EIC). These observables directly probe the three-dimensional (3D) structure of hadrons, in particular, the quark transversity and Sivers parton distributions and the Collins fragmentation functions. We explore the feasibility of these experimental measurements by detector simulations and discuss detector requirements. We conclude that jet observables have the potential to enhance the 3D imaging EIC program.
Subjects:
High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Experiment (hep-ex); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
arXiv:
2007.07281 [pdf]
PRD(2020)·63 citations
08
[Submitted on 14 Jul 2020] (cross-list from hep-ph)
Resolution of hyper-triton chemical freeze-out puzzle in high energy nuclear collisions
O. V. Vitiuk🇺🇦 · K. A. Bugaev🇺🇦 · E. S. Zherebtsova🇷🇺 · D. B. Blaschke🇷🇺 · L. V. Bravina🇳🇴 · E. E. Zabrodin🇳🇴 · G. M. Zinovjev🇺🇦
The recently developed hadron resonance gas model with multicomponent hard-core repulsion is used to address and resolve the long standing problem to describe the light nuclear cluster multiplicities including the hyper-triton measured by the STAR Collaboration, known as the hyper-triton chemical freeze-out puzzle. An unprecedentedly accurate description is obtained for the hadronic and other light nuclear cluster data measured by STAR at the collision energy $s_{N N} = 200$ GeV and by ALICE at $s_{N N} = 2.76$ TeV. This success is achieved by applying the new strategy of analyzing the light nuclear cluster data and by using the value for the hard-core radius of the (anti-) $Λ$ hyperons found in earlier work. One of the most striking results of the present work is that for the most probable scenario of chemical freeze-out for the STAR energy the obtained parameters allow to simultaneously reproduce the values of the experimental ratios $S_{3}$ and $S ˉ_{3}$ which were not included in the fit.
Comments:
12 pages, 5 figures and 4 tables
Subjects:
High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
arXiv:
2007.07376 [pdf]
EPJA(2021)·9 citations
09
[Submitted on 14 Jul 2020] (cross-list from hep-ph)
Nonperturbative quark matter equations of state with vector interactions
Konstantin Otto🇩🇪 · Micaela Oertel🇫🇷 · Bernd-Jochen Schaefer🇩🇪
Nonperturbative equations of state (EoSs) for two and three quark flavors are constructed with the functional renormalization group (FRG) within a quark-meson model truncation augmented by vector mesons for low temperature and high density. Based on previous FRG studies without repulsive vector meson interactions the influence of isoscalar vector $ω$ - and $ϕ$ -mesons on the dynamical fluctuations of quarks and (pseudo)scalar mesons is investigated. The grand potential as well as vector meson condensates are evaluated as a function of quark chemical potential and the quark matter EoS in $β$ -equilibrium is applied to neutron star (NS) physics. The tidal deformability and mass-radius relations for hybrid stars from combined hadronic and quark matter EoSs are compared for different vector couplings. We observe a significant impact of the vector mesons on the quark matter EoS such that the resulting EoS is sufficiently stiff to support two-solar-mass neutron stars.
Comments:
20 pages, 7 figures, 1 table; to appear in EPJ ST Special Issue: Strong Correlations in Dense Matter Physics
Subjects:
High Energy Physics — Phenomenology (hep-ph); High Energy Astrophysical Phenomena (astro-ph.HE); Nuclear Theory (nucl-th)
arXiv:
2007.07394 [pdf]
Eur.Phys.J.ST(2020)·54 citations
10
[Submitted on 15 Jul 2020] (cross-list from hep-ph)
Inclusive Hadroproduction of $P$ -Wave Heavy Quarkonia in Potential Nonrelativistic QCD
Nora Brambilla🇩🇪 · Hee Sok Chung🇩🇪 · Antonio Vairo🇩🇪
We compute the color-singlet and color-octet nonrelativistic QCD (NRQCD) long-distance matrix elements for inclusive production of $P$ -wave quarkonia in the framework of potential NRQCD. In this way, the color-octet NRQCD long-distance matrix element can be determined without relying on measured cross section data, which has not been possible so far. We obtain inclusive cross sections of $χ_{c J}$ and $χ_{b J}$ at the LHC, which are in good agreement with data. In principle, the formalism developed in this Letter can be applied to all inclusive production processes of heavy quarkonia.
Comments:
6 pages, 2 figures, minor revisions, version published in Physical Review Letters
Subjects:
High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Experiment (hep-ex); High Energy Physics — Lattice (hep-lat); Nuclear Theory (nucl-th)
arXiv:
2007.07613 [pdf]
PRL(2021)·30 citations
11
[Submitted on 15 Jul 2020] (cross-list from hep-ph)
A study of charm quark dynamics in quark-gluon plasma with 3+1 D viscous hydrodynamics
Manu Kurian🇮🇳 · Mayank Singh🇨🇦 · Vinod Chandra🇮🇳 · Sangyong Jeon🇨🇦 · Charles Gale🇨🇦
The drag and diffusion coefficients are studied within the framework of Fokker-Planck dynamics for the case of a charm quark propagating in an expanding quark-gluon plasma. The space-time evolution of the nuclear matter created in the relativistic heavy-ion collision is modelled using MUSIC, a 3+1 D relativistic viscous hydrodynamic approach. The effect of viscous corrections to the heavy quark transport coefficients is explored by considering scattering processes with thermal quarks and gluons in the medium. It is observed that the momentum diffusion of the heavy quarks is sensitive to the shear and bulk viscosity to entropy ratios. The collisional energy loss of the charm quark in the viscous quark-gluon plasma is analyzed.
Comments:
11 pages
Subjects:
High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
arXiv:
2007.07705 [pdf]
PRC(2020)·31 citations
12
[Submitted on 15 Jul 2020] (cross-list from hep-ph)
Doubly Heavy Baryon Xi_cc Production in Upsilon (1S) Decay
Shi-Yuan Li🇨🇳 · Zhen-Yang Li🇨🇳 · Zong-Guo Si🇨🇳 · Zhong-Juan Yang🇨🇳 · Xiao Zhang🇨🇳
Upsilon (1S) decay to Xi_cc +anything is studied. It is shown that the branching ratio can be as significant as that of Upsilon (1S) decay to J/Psi +anything. The non-relativistic heavy quark effective theory framework is employed for the calculation on the decay width. Measurements on the production of Xi_cc and likely production characteristic of the partonic state with four charm quarks at BELLE2 are suggested.
Comments:
13 pages, 6 figs, language updated in the 2nd version
Subjects:
High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
arXiv:
2007.07706 [pdf]
PRD(2021)·10 citations

Affiliations

first authorsco-authorsvia INSPIRE

Jet-based measurements of Sivers and Collins asymmetries at the future Electron-Ion Collider

Resolution of hyper-triton chemical freeze-out puzzle in high energy nuclear collisions

Nonperturbative quark matter equations of state with vector interactions

Inclusive Hadroproduction of P-Wave Heavy Quarkonia in Potential Nonrelativistic QCD

A study of charm quark dynamics in quark-gluon plasma with 3+1 D viscous hydrodynamics

Doubly Heavy Baryon Xi_cc Production in Upsilon (1S) Decay

Affiliations

Inclusive Hadroproduction of $P$ -Wave Heavy Quarkonia in Potential Nonrelativistic QCD