3 years ago

Doubly charmed baryon production in heavy ion collisions.

Berndt Müller, Xiaojun Yao

We give an estimate of $\Xi_{cc}^{++}$ production rate and transverse momentum spectra in relativistic heavy ion collisions. We use Boltzmann transport equations to describe the dynamical evolution of charm quarks and diquarks inside quark-gluon plasma. In-medium formation and dissociation rates of charm diquarks are calculated from potential non-relativistic QCD for the diquark sector. We solve the transport equations by Monte Carlo simulations. For $2.76$ TeV Pb-Pb collisions with $0-10\%$ centrality, the number of $\Xi_{cc}^{++}$ in the transverse momentum range $0-5$ GeV and rapidity from $-1$ to 1 is roughly $0.026$ per collision. We repeat the calculation with a melting temperature $250$ MeV above which no diquarks can be formed. The number of $\Xi_{cc}^{++}$ produced in the same kinematic region is about $0.016$ per collision.

Publisher URL: http://arxiv.org/abs/1801.02652

DOI: arXiv:1801.02652v1

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