1,164 research outputs found
Anti-shadowing Effect on Charmonium Production at a Fixed-target Experiment Using LHC Beams
We investigate charmonium production in Pb+Pb collisions at LHC beam energy
=2.76 A TeV at fixed-target experiment (=72 GeV). In the frame of a transport approach including cold
and hot nuclear matter effects on charmonium evolution, we focus on the
anti-shadowing effect on the nuclear modification factors and
for the yield and transverse momentum. The yield is more suppressed at
less forward rapidity (2) than that at very forward
rapidity (4) due to the shadowing and anti-shadowing in
different rapidity bins.Comment: 7 pages, 3 figures; submitted to Advances in High Energy Physics.
arXiv admin note: text overlap with arXiv:1409.555
Thermal Charm and Charmonium Production in Quark Gluon Plasma
We study the effect of thermal charm production on charmonium regeneration in
high energy nuclear collisions. By solving the kinetic equations for charm
quark and charmonium distributions in Pb+Pb collisions, we calculate the global
and differential nuclear modification factors and
for s. Due to the thermal charm production in hot medium,
the charmonium production source changes from the initially created charm
quarks at SPS, RHIC and LHC to the thermally produced charm quarks at Future
Circular Collider (FCC), and the suppression () observed so
far will be replaced by a strong enhancement () at FCC at low
transverse momentum.Comment: 6 pages, 3 figure
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