Rapidity distributions in exclusive Z + jet and γ + jet events in pp collisions at √s = 7 TeV
Author(s)
Apyan, Aram; Busza, Wit; Cali, Ivan Amos; Chan, M.; Di Matteo, Leonardo; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Gulhan, Doga Can; Kim, Y.; Klute, Markus; Lai, Yue Shi; Ma, Teng; Nahn, Steven; Paus, Christoph M. E.; Ralph, Duncan Kelley; Stephans, George S. F.; Velicanu, Dragos Alexandru; Wyslouch, Boleslaw; Yilmaz, Yetkin; Zanetti, Marco; Dutta, Valentina; Luckey Jr, P David; Roland, Gunther M; Stoeckli, Fabian; Yoon, A. S.; Wyslouch, Victoria; Bauer, Gerry P; Levin, Andrew Michael; Roland, Christof E; Sumorok, Konstanty C; Wolf, Roger; Yang, Mingming; ... Show more Show less
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Rapidity distributions are presented for events containing either a Z boson or a photon with a single jet in proton-proton collisions produced at the CERN LHC. The data, collected with the CMS detector at s√ = 7 TeV, correspond to an integrated luminosity of 5.0 fb[superscript −1]. The individual rapidity distributions of the boson and the jet are consistent within 5% with expectations from perturbative QCD. However, QCD predictions for the sum and the difference in rapidities of the two final-state objects show discrepancies with CMS data. In particular, next-to-leading-order QCD calculations, and two common Monte Carlo event generators using different methods to match matrix-element partons with parton showers, appear inconsistent with the data as well as with each other.
Date issued
2013-12Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science; Massachusetts Institute of Technology. School of ScienceJournal
Physical Review D
Publisher
American Physical Society
Citation
Chatrchyan, S., V. Khachatryan, A. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, et al. “Rapidity distributions in exclusive Z + jet and γ + jet events in pp collisions at √s = 7 TeV.” Phys. Rev. D 88, no. 11 (December 2013). © 2013 CERN, for the CMS Collaboration
Version: Final published version
ISSN
1550-7998
1550-2368