Conveners
Contributed session 4: Hard probes & QCD at high temperature, Baryon-rich QCD matter
- Anju Bhasin
Dijet production in proton-nucleus ($p$A) collisions at the LHC provides invaluable information on the underlying parton distributions in nuclei, especially the gluon distributions. Triple-differential dijet cross sections enable a detailed kinematic scan (over momentum fraction $x$ and probing scale $Q^2$) of the nuclear parton distribution functions (nPDFs), i.e., $f^\textrm{A}_i(x,Q^2)$....
The phase transition from hadronic matter to quark-gluon plasma (QGP) is a phenomenon that occurs under extreme conditions of high temperature and high density. The QGP causes energy loss of high momentum particles which is observed as suppression of high momentum hadron production in A+A collisions relative to p+p collisions. PHENIX, one of the relativistic heavy ion collider (RHIC)...
We investigate the real time evolution of a highly occupied and weakly coupled Yang-Mills field in the expanding geometry using the semiclassical approximation, and study its thermalization in terms of the Husimi-Wehrl(HW) entropy that is defined by the Husimi function. The initial conditions are given to mimic the realistic grasma initial condition, where the color electric and color magnetic...
We analyze the chemical equilibration by computing relaxation time of a gas of the SU(3) octet of pseudoscalar mesons at finite temperature and zero baryon chemical potential [1]. The amplitudes of all possible reactions in the system have been taken from next-to-leading-order chiral perturbation theory. The amplitudes are further unitarized using inverse amplitude method to calculate the...
Based on the fact that the mass difference between the chiral
partners is an order parameter of chiral phase transition and that
the chiral order parameter reduces substantially at the chemical
freeze-out point in ultra-relativistic heavy ion collisions, we
argue that the production ratio of 𝐾1 over 𝐾∗ in such
collisions should be substantially larger than that predicted in
the...
Hadronic resonances are very useful to probe the late-stage evolution of ultra-relativistic nucleon-nucleon or nuclear collisions. Since they have lifetimes comparable to the hadronic phase timespan, rescattering and regeneration processes may affect the measured yields. These processes modify the resonance momentum distributions. Measurements of the differential yields of resonances with...
