Angular distribution of prompt photons using the compact muon solenoid detector at S = 7 TeV

Vanessa Gaultney Werner, Florida International University

Abstract

The study of the angular distribution of photon plus jet events in pp collisions at S = 7 TeV with the Compact Muon Solenoid (CMS) detector is presented. The photon is restricted to the central region of the detector (:η: <1.4442) while the jet is allowed to be present in both central and forward regions of CMS (:η: < 2.4). Dominant backgrounds due to jets fragmenting into neutral mesons are accounted for through the use of a template method that discriminates between signal and background. The angular distribution, :η*:, is defined as the absolute value of the difference in η between the leading photon and leading jet in an event divided by two. The angular distribution ranging from 0–1.4 was examined and compared with next-to-leading order QCD predictions and was found to be in good agreement.^

Subject Area

Physics, Elementary Particles and High Energy

Recommended Citation

Werner, Vanessa Gaultney, "Angular distribution of prompt photons using the compact muon solenoid detector at S = 7 TeV" (2012). ProQuest ETD Collection for FIU. AAI3554227.
http://digitalcommons.fiu.edu/dissertations/AAI3554227

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