Hydrodynamics of a quark droplet II: Implications of a non-zero baryon chemical potential

TY - JOUR

T1 - Hydrodynamics of a quark droplet II

T2 - Implications of a non-zero baryon chemical potential

AU - Bjerrum.Bohr, Johan

AU - Mishustin, Igor N.

AU - Døssing, Thomas

PY - 2014/3/2

Y1 - 2014/3/2

N2 - We present an extended version of the dynamical model for a multi-quark droplet evolution described in our proceeding paper. The model includes collective expansion of the droplet, effects of the vacuum pressure and surface tension, and now a non-zero baryon number. The hadron emission from the droplet is described following Weisskopf's statistical model. We consider evolutions of droplets with different initial temperatures and net baryon number. It is found that the introduction of a non-zero net baryon number does not change the lifetime of the droplets significantly. Only when we consider an initially very baryon-rich, low-temperature droplets is the lifetime is decreased significantly. We have, furthermore, found a convergence of both baryon chemical potential and temperature toward the values μB≈450MeV and T≈150MeV. This convergence is linked to the competing emission of baryons versus mesons.

AB - We present an extended version of the dynamical model for a multi-quark droplet evolution described in our proceeding paper. The model includes collective expansion of the droplet, effects of the vacuum pressure and surface tension, and now a non-zero baryon number. The hadron emission from the droplet is described following Weisskopf's statistical model. We consider evolutions of droplets with different initial temperatures and net baryon number. It is found that the introduction of a non-zero net baryon number does not change the lifetime of the droplets significantly. Only when we consider an initially very baryon-rich, low-temperature droplets is the lifetime is decreased significantly. We have, furthermore, found a convergence of both baryon chemical potential and temperature toward the values μB≈450MeV and T≈150MeV. This convergence is linked to the competing emission of baryons versus mesons.

U2 - 10.1016/j.nuclphysa.2013.12.011

DO - 10.1016/j.nuclphysa.2013.12.011

M3 - Journal article

SN - 0375-9474

VL - 923

SP - 19

EP - 30

JO - Nuclear Physics A

JF - Nuclear Physics A

ER -