Measurement of the inclusive isolated prompt photon cross section in pp collisions at s = 8 TeV with the ATLAS detector
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Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Journal of High Energy Physics (Q1)
Dergi ISSN 1029-8479 Dergi Bilgileri (2016)
Makale Dili Basım Tarihi 01-2016
Kabul Tarihi Yayınlanma Tarihi 01-08-2016
Cilt / Sayı / Sayfa 2016 / 8 / 1–42 DOI 10.1007/JHEP08(2016)005
Makale Linki https://link.springer.com/article/10.1007/JHEP08(2016)005
UAK Araştırma Alanları
Nükleer Fizik
Özet
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 TeV is presented. The measurement covers the pseudorapidity ranges| η γ|< 1. 37 and 1. 56≤| η γ|< 2. 37 in the transverse energy range 25< E γ T< 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.
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