Wed·Apr 19, 2023Wednesday·April 19, 2023

1. 01*

   Obtaining high resolution excitation functions with an active thick-target approach and validating them with mirror nuclei

   S. Hudan🇺🇸 · J.E. Johnstone🇺🇸 · Rohit Kumar🇺🇸 · R.T. deSouza🇺🇸 · J. Allen · D.W. Bardayan🇺🇸 · D. Blankstein · C. Boomershine🇺🇸 · S. Carmichael · A. Clark · S. Coil · S.L. Henderson · P.D. O'Malley🇺🇸 · W.W. von Seeger

   Measurement of fusion excitation functions for stable nuclei has largely been restricted to nuclei with significant natural abundance. Typically, to investigate neighboring nuclei with low natural abundance has required obtaining isotopically enriched material. This restriction often limits the ability to perform such measurements. We report the measurement of a high quality fusion excitation function for a ${}^{17}$O beam produced from unenriched material with 0.038\% natural abundance. The measurement is enabled by using an active thick-target approach and the accuracy of the result is validated using its mirror nucleus ${}^{17}$F and resonances. The result provides important information about the average fusion cross-section for the oxygen isotopic chain as a function of neutron excess.

   nucl-ex0 citations
2. 02*

   Constraining the equation of state with heavy quarks in the quasi-particle model of QCD matter

   Feng-Lei Liu🇨🇳 · Xiang-Yu Wu🇨🇳 · Shanshan Cao🇨🇳 · Guang-You Qin🇨🇳 · Xin-Nian Wang🇨🇳

   In a quasi-particle model of QCD matter at finite temperature with thermal masses for quarks and gluons from hard thermal loops, the equation of state (EOS) can be described by an effective temperature dependence of the strong coupling $g(T)$. Assuming the same effective coupling between the exchanged gluon and thermal partons, the EOS can also be related to parton energy loss.} Based on the quasi-particle linear Boltzmann transport (QLBT) model coupled to a (3+1)-dimensional viscous hydrodynamic model of the quark-gluon plasma (QGP) evolution and a hybrid fragmentation-coalescence model for heavy quark hadronization, we perform a Bayesian analysis of the experimental data on $D$ meson suppression $R_{\mathrm{AA}}$ and anisotropy $v_2$ at RHIC and the LHC. We achieve a simultaneous constraint on the QGP EOS and the heavy quark transport coefficient, both consistent with the lattice QCD results.

   ↳ hep-phnucl-exnucl-thPLB(2024)·25 citations

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.