1,302 research outputs found
Neutral Color Superconductivity Including Inhomogeneous Phases at Finite Temperature
We investigate neutral quark matter with homogeneous and inhomogeneous color
condensates at finite temperature in the frame of an extended NJL model. By
calculating the Meissner masses squared and gap susceptibility, the uniform
color superconductor is stable only in a temperature window close to the
critical temperature and becomes unstable against LOFF phase, mixed phase and
gluonic phase at low temperatures. The introduction of the inhomogeneous phases
leads to disappearance of the strange intermediate temperature 2SC/g2SC and
changes the phase diagram of neutral dense quark matter significantly.Comment: 12 pages, 7 figures. v2: references added, accepted for publication
in PRD. V3: Calculation of the neutral LOFF state clarified, typos corrected
Production in High Energy Nuclear Collisions
We investigate the production of baryon in high energy nuclear
collisions via quark coalescence mechanism. The wave function of
is solved from the Schr\"odinger equation for the bound state of three charm
quarks by using the hyperspherical method. The production cross section of
per binary collision in a central Pb+Pb collision at
TeV reaches 9 nb, which is at least two orders of
magnitude larger than that in a p+p collision at the same energy. Therefore, it
is most probable to discover in heavy ion collisions at LHC, and
the observation will be a clear signature of the quark-gluon plasma formation.Comment: 6 pages, 5 figure
Searching for in Relativistic Heavy Ion Collisions
We study the doubly charmed baryon in high energy nuclear
collisions. We solve the three-body Schroedinger equation with relativistic
correction and calculate the yield and transverse momentum
distribution via coalescence mechanism. For production in central
Pb+Pb collisions at LHC energy, the yield is extremely enhanced, and the
production cross section per binary collision is one order of magnitude larger
than that in p+p collisions. This indicates that, it is most probable to
discover in heavy ion collisions and its discovery can be
considered as a probe of the quark-luon plasma formation.Comment: 5 pages and 4 figure
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