Measurement of the inclusive isolated prompt photon cross section in pp collisions at √s=8 TeV with the ATLAS detector

Mullier, Geoffrey; Haug, Sigve; Weber, Michael; Meloni, Federico; Cervelli, Alberto; Beck, Hans Peter; Stucci, Stefania; Ereditato, Antonio (2016). Measurement of the inclusive isolated prompt photon cross section in pp collisions at √s=8 TeV with the ATLAS detector. Journal of High Energy Physics, 2016(8) Springer 10.1007/JHEP08(2016)005

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A measurement of the cross section for the inclusive production of isolated prompt photons in proton-proton collisions at a centre-of-mass energy of √s=8 TeV is presented. The measurement covers the pseudo rapidity ranges |ηγ| < 1.37 and 1.56 ≤ |ηγ| < 2.37 in the transverse energy range 25 < EγT < 1500 GeV. The results are based on an integrated luminosity of 20.2 fb⁻¹, recorded by the ATLAS detector at the LHC. Photon candidates are identified by combining information from the calorimeters and the inner tracker. The background is subtracted using a data-driven technique, based on the observed calorimeter shower-shape variables and the deposition of hadronic energy in a narrow cone around the photon candidate. The measured cross sections are compared with leading-order and next-to-leading order perturbative QCD calculations and are found to be in a good agreement over ten orders of magnitude.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Haug, Sigve; Weber, Michael and Beck, Hans Peter

Subjects:

500 Science > 530 Physics
500 Science > 510 Mathematics

ISSN:

1029-8479

Publisher:

Springer

Language:

English

Submitter:

Annette Krebs-Wegenast

Date Deposited:

04 Aug 2017 10:03

Last Modified:

06 Aug 2017 02:17

Publisher DOI:

10.1007/JHEP08(2016)005

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwähnt.

BORIS DOI:

10.7892/boris.99950

URI:

https://boris.unibe.ch/id/eprint/99950

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