Published January 1, 2013
| Version v1
Journal article
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Rapidity distributions in exclusive Z plus jet and gamma plus jet events in pp collisions at root s=7 TeV
Creators
- 1. Yerevan Phys Inst, Yerevan 375036, Armenia
- 2. Austrian Acad Sci, Inst Hochenergiephys, OeAW, A-1050 Vienna, Austria
Description
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 root 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.
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bib-93737c36-97b8-451f-be72-2167b062762c.txt
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