Fabjan, C., Frühwirth, R., Jeitler, M., & CMS Collaboration. (2012). Measurement of isolated photon production in pp and PbPb collisions at √sNN = 2.76 TeV. Physics Letters B, 710(2), 256–277. https://doi.org/10.1016/j.physletb.2012.02.077
E141-03 - Forschungsbereich Nuclear and Particle Physics
-
Zeitschrift:
Physics Letters B
-
ISSN:
0370-2693
-
Datum (veröffentlicht):
4-Apr-2012
-
Umfang:
22
-
Verlag:
ELSEVIER
-
Peer Reviewed:
Ja
-
Keywords:
Nuclear and High Energy Physics; Heavy-ions
en
Abstract:
Isolated photon production is measured in proton–proton and lead–lead collisions at nucleon–nucleon centre-of-mass energies of 2.76 TeV in the pseudorapidity range |n| < 1.44 and transverse energies E_T between 20 and 80 GeV with the CMS detector at the LHC. The measured E_T spectra are found to be in good agreement with next-to-leading-order perturbative QCD predictions. The ratio of PbPb to pp isolated photon E_T-differential yields, scaled by the number of incoherent nucleon–nucleon collisions, is consistent with unity for all PbPb reaction centralities.
en
Forschungsschwerpunkte:
Quantum Modelling and Simulation: 30% außerhalb der gesamtuniversitären Forschungsschwerpunkte: 70%