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Nuclear Theory·nucl-th

Tuesday·August 20, 2024

11 papers—3 primary·8 cross-listed

All11Primary3Cross-lists8
  1. 01

    Modeling net-charge fluctuations in heavy-ion collisions at the LHC

    G.O. Ambaryan🇷🇺 · A.S. Chernyshov🇷🇺 · G.Kh. Eyyubova🇷🇺 · V.L. Korotkikh🇷🇺 · I.P. Lokhtin🇷🇺 · S.V. Petrushanko🇷🇺 · A.M. Snigirev🇷🇺 · E.E. Zabrodin🇷🇺

    The analysis of Pb+Pb data for net-charge fluctuations at LHC energies within the HYDJET++ model is presented. The strongly intensive quantities and are used to get rid of the effects related to volume fluctuations of the system. We employ two versions of the HYDJET++ for the analysis. The first one is the standard or default version, whereas the second one represents its further modification, which takes into account explicit event-by-event conservation of the electric net-charge of produced particles. Inclusion of the canonical net-charge conservation in the model allows one for better description of the experimental data obtained by the ALICE and the CMS Collaborations. Comparison with calculations of other models is also presented.

    nucl-thhep-phnucl-exCPC(2025)·6 citations
  2. 02

    Nuclear Fragmentation at the Future Electron-Ion Collider

    C. A. Bertulani🇺🇸 · Y. Kucuk🇹🇷 · F.S. Navarra🇧🇷

    We explore the potential of conducting low-energy nuclear physics studies, including nuclear structure and decay, at the future Electron-Ion Collider (EIC) at Brookhaven. By comparing the standard theory of electron-nucleus scattering with the equivalent photon method applied to Ultraperipheral Collisions (UPC) at the Large Hadron Collider (LHC) at CERN. In the limit of extremely high beam energies and small energy transfers, very transparent equations emerge. We apply these equations to analyze nuclear fragmentation in UPCs at the LHC and scattering at the EIC, demonstrating that the EIC could facilitate unique photonuclear physics studies. However, we have also shown that the fragmentation cross-sections at the EIC are about 1,000 times smaller than those at the LHC. At the LHC, the fragmentation of uranium nuclei displays characteristic double-hump mass distributions from fission events, while at the EIC, fragmentation is dominated by neutron emission and fewer few fission products, about 10,000 smaller number of events.

    nucl-thhep-phnucl-exNPA(2025)·6 citations
  3. 03

    Electric conductivity of hot and dense nuclear matter

    Joseph Atchison🇺🇸 · Yiding Han🇺🇸 · Frank Geurts🇺🇸

    Transport coefficients play an important role in characterising hot and dense nuclear matter, such as that created in ultra-relativistic heavy-ion collisions (URHIC). In the present work we calculate the electric conductivity of hot and dense hadronic matter by extracting it from the electromagnetic spectral function, through its zero energy limit at vanishing 3-momentum. We utilise the vector dominance model (VDM), in which the photon couples to hadronic currents predominantly through the meson. Therefore, we use hadronic many-body theory to calculate the -meson's self-energy in hot and dense hadronic matter, by dressing its pion cloud with -, -, -, N-hole, and -hole loops. We then introduce vertex corrections to maintain gauge invariance. Finally, we analyze the low-energy transport peak as a function of temperature and baryon chemical potential, and extract the conductivity along a proposed phase transition line.

    nucl-thhep-phPLB(2024)·5 citations

Affiliations

first authorsco-authorsvia INSPIRE