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-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. © 2013 CERN. Published by the American Physical Society.

Chatrchyan, S., Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., et al. (2013). Rapidity distributions in exclusive Z+jet and γ+jet events in pp collisions at √s=7 TeV. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 88(11) [10.1103/PhysRevD.88.112009].

Rapidity distributions in exclusive Z+jet and γ+jet events in pp collisions at √s=7 TeV

BENAGLIA, ANDREA DAVIDE;DE GUIO, FEDERICO;DINARDO, MAURO EMANUELE;FIORENDI, SARA;GHEZZI, ALESSIO;GOVONI, PIETRO;Lucchini, M;MANZONI, RICCARDO ANDREA;MARTELLI, ARABELLA;MORONI, LUIGI;PAGANONI, MARCO;RAGAZZI, STEFANO;TABARELLI DE FATIS, TOMMASO;Branca, A;Malberti, M;Massironi, A;
2013

Abstract

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-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. © 2013 CERN. Published by the American Physical Society.
Articolo in rivista - Articolo scientifico
Nuclear and High Energy Physics
English
2013
88
11
112009
none
Chatrchyan, S., Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., et al. (2013). Rapidity distributions in exclusive Z+jet and γ+jet events in pp collisions at √s=7 TeV. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 88(11) [10.1103/PhysRevD.88.112009].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/65521
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