Measurement of the inclusive isolated photon production cross section in pp collisions at √s = 7 TeV

Acharya, S.; Adamová, D.; Adhya, S. P.; Adler, A.; Adolfsson, J.; Aggarwal, M. M.; Aglieri Rinella, G.; Agnello, M.; Agrawal, N.; Ahammed, Z.; Ahmad, S.; Ahn, S. U.; Akindinov, A.; Al-Turany, M.; Alam, S. N.; Albuquerque, D. S.D.; Aleksandrov, D.; Alessandro, B.; Alfanda, H. M.; Alfaro Molina, R.; Ali, B.; Ali, Y.; Alici, A.; Alkin, A.; Alme, J.; Alt, T.; Altenkamper, L.; Bedda, C.; Caffarri, D.; Christakoglou, P.; Correia Zanoli, H.J.; Grelli, A.; Jaelani, S.; Khabanova, Z.; Kuijer, P. G.; Lodato, D. F.; Margutti, J.; Mischke, A.; Mohanty, A. P.; Nooren, G.; Peitzmann, T.; Sas, M. H.P.; Simatovic, G.; Snellings, R. J.M.; Trzeciak, B. A.; van der Kolk, N.; van Doremalen, L. V.R.; van Leeuwen, M.; Veen, A. M.; Vermunt, L.; Yokoyama, H.

Measurement of the inclusive isolated photon production cross section in pp collisions at √s = 7 TeV

Abstract

The production cross section of inclusive isolated photons has been measured by the ALICE experiment at the CERN LHC in pp collisions at a centre-of-momentum energy of √s = 7 TeV. The measurement is performed with the electromagnetic calorimeter EMCal and the central tracking detectors, covering a range of |η| < 0.27 in pseudorapidity and a transverse momentum range of 10 < pγT < 60 GeV/c . The result extends the pT coverage of previously published results of the ATLAS and CMS experiments at the same collision energy to smaller pT. The measurement is compared to next-to-leading order perturbative QCD calculations and to the results from the ATLAS and CMS experiments. All measurements and theory predictions are in agreement with each other

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Last time updated on 15/12/2019