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Charmed hadron production via equal-velocity quark combination in ultra-relativistic heavy ion collisions

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arxiv 1911.00823 v1 pith:LNYXFK5O submitted 2019-11-03 hep-ph hep-exnucl-th

Charmed hadron production via equal-velocity quark combination in ultra-relativistic heavy ion collisions

classification hep-ph hep-exnucl-th
keywords heavycharmedcollisionsbaryonscollidercombinationdataequal-velocity
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Recent data on the production of $D$ mesons and $\Lambda_c^+$ baryons in heavy ion collisions at the Relativistic Heavy Ion Collider and the Large Hadron Collider exhibit a number of striking characteristics such as enhanced yield ratios $D_s^+/D^0$, $\Lambda_c^+/D^0$ and their transverse momentum dependences. In this paper, we derive the momentum dependence of open charm mesons and singly charmed baryons produced in ultra-relativistic heavy ion collisions via the equal-velocity quark combination. We present analytic expressions and numerical results of yield ratios and compare them with the experimental data available. We make predictions for other charmed hadrons.

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    nucl-ex 2026-07 accept novelty 6.0

    First measurement of prompt Ξ_c^0 baryon production in Pb–Pb collisions at √s_NN=5.02 TeV finds a nuclear modification factor reaching about 3 in the 3 < p_T < 4 GeV/c interval in 0–10% central events.