Direct photons at low transverse momentum -- a QGP signal in pp collisions at LHC

May 27, 2011, 6:50 PM
Salon Haendel AB (Imperial Palace)

Salon Haendel AB

Imperial Palace

Allée Impérial 74000 Annecy, France Tél. : +33 4 50 09 30 00
Parallel Electromagnetic probes Electromagnetic probes


Prof. Fuming Liu (Huazhong Normal University)


We predict that direct photon production in pp collisions at 7~TeV will get at least 10 times enhanced compared to the next to leading order pQCD predictions, at low transverse momentum ($\pt$ $\lesssim$ 10~GeV/c), due to the thermal photon emissions from a quark gluon plasma (QGP) formed in high multiplicity events. Thus the enhancement of direct photon production at low $\pt$ can be a QGP signal in pp collisions.

Primary author

Prof. Fuming Liu (Huazhong Normal University)


Prof. Klaus Werner (Subatech)

Presentation materials