Conveners
Parallel session 3: Heavy flavor & quarkonia I
- Roberta Arnaldi (Universita e INFN Torino (IT))
We present new lattice results for the heavy quark diffusion coefficient in 2+1 flavor QCD in the temperature range from 163 MeV up to few GeV. Compared to previous lattice calculations with unphysical light quark masses, we consider near-physical values and a much wider temperature range. Our results for the spatial heavy diffusion coefficient near the crossover temperature are considerably...
A number of new four-quark states containing from one to four $c$ or $\overline c$ quarks have been observed recently. Many of these new states have been discovered at the LHC. The production of these states via intrinsic charm in the proton is investigated. The tetraquark masses obtained in this approac agree well with the measured masses [1]. These calculations can provide some insight...
The recombination production of $B_c$ mesons in heavy-ion collisions at the LHC energy is facilitated by the abundant and highly thermalized charm ($c$) quarks transported in the deconfined medium created. We study the production of $B_c$ mesons via $c$ and bottom ($b$) quark recombination in a statistical fashion by placing $B_c$ in the position of a member of the family of open $b$ hadrons,...
Heavy quarks (charm and beauty) are useful probes for investigating the properties of the quark-gluon plasma (QGP) generated in ultra-relativistic heavy-ion collisions. Their participation in the collective motion of the medium can be assessed by measuring the charm-hadron elliptic-flow coefficient $v_2$, originating from the initial-state spatial asymmetry in non-central heavy-ion collisions....
Recent observations at the Large Hadron Collider (LHC) have revealed a significant enhancement in baryon production in hadronic collisions compared to e$^+$e$^-$ and ep collisions, challenging the long-held assumption of fragmentation universality. This phenomenon, initially observed in the charm sector, has also been observed in the beauty sector, indicating a broader implication for...
Due to their large mass, beauty quarks are always produced in hard-scattering processes, and hence their production can be computed with perturbative quantum chromodynamics (pQCD) calculations. The production cross section of beauty hadrons can be theoretically described with the factorisation approach as a convolution of the parton distribution functions of the incoming projectiles, the...
Heavy quarks (charm and beauty) are mainly produced in hard-scattering processes among partons in ultrarelativistic hadronic collisions at the LHC. In heavy-ion collisions, where a quark-gluon plasma (QGP) state is produced, charm and beauty quarks are produced on a timescale shorter than the medium formation time, being sensitive to the initial angular momentum of the fireball and to the...
