Rapidity distributions in exclusive Z + jet and photon + jet events in pp collisions at sqrt(s)=7 TeV - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physical Review D Year : 2013

Rapidity distributions in exclusive Z + jet and photon + jet events in pp collisions at sqrt(s)=7 TeV

S. Chatrchyan
  • Function : Author
P. Busson
R. Granier de Cassagnac
C. Mironov
P. Paganini
J.-L. Agram
C. Collard
E. Conte
P. van Hove
D. Contardo
M. Gouzevitch
M. Lethuillier
V. Sordini
P. Verdier

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 sqrt(s) = 7 TeV, correspond to an integrated luminosity of 5.0 inverse femtobarns. 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.

Dates and versions

in2p3-00872711 , version 1 (14-10-2013)

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Cite

S. Chatrchyan, M. Besançon, F. Couderc, M. Dejardin, D. Denegri, et al.. Rapidity distributions in exclusive Z + jet and photon + jet events in pp collisions at sqrt(s)=7 TeV. Physical Review D, 2013, 88, pp.112009. ⟨10.1103/PhysRevD.88.112009⟩. ⟨in2p3-00872711⟩
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