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Measurement of the rapidity and transverse momentum distributions of Z bosons in pp collisions at √(s)=7  TeV

Author(s)
Alver, Burak Han; Bendavid, Joshua L.; Busza, Wit; Butz, Erik M.; Cali, Ivan Amos; Chan, M.; Dutta, Valentina; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Hahn, Kristian Allan; Kim, Y.; Klute, Markus; Li, W.; Ma, Teng; Nahn, Steven; Paus, Christoph M. E.; Ralph, Duncan Kelley; Stephans, George S. F.; Stoeckli, Fabian; Sung, Kevin Kai Hong; Velicanu, Dragos Alexandru; Wenger, Edward Allen; Wyslouch, Boleslaw; Xie, Si; Yilmaz, Yetkin; Zanetti, Marco; Harris, Philip Coleman; Roland, Christof E; Rudolph, Matthew Scott; Yang, Mingming; Yoon, A. S.; Bauer, Gerry P; Lee, Yen-Jie; Luckey Jr, P David; Roland, Gunther M; Sumorok, Konstanty C; Wolf, Roger; ... Show more Show less
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Abstract
Measurements of the normalized rapidity (y) and transverse-momentum (q[subscript T]) distributions of Drell–Yan muon and electron pairs in the Z-boson mass region (60<M[subscript ℓℓ]<120  GeV) are reported. The results are obtained using a data sample of proton-proton collisions at a center-of-mass energy of 7 TeV, collected by the CMS experiment at the Large Hadron Collider (LHC), corresponding to an integrated luminosity of 36  pb[superscript -1]. The distributions are measured over the ranges |y|<3.5 and q[subscript T]<600  GeV and compared with quantum chromodynamics (QCD) calculations using recent parton distribution functions to model the momenta of the quarks and gluons in the protons. Overall agreement is observed between the models and data for the rapidity distribution, while no single model describes the Z transverse-momentum distribution over the full range.
Date issued
2012-02
URI
http://hdl.handle.net/1721.1/70584
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Physical Review D
Publisher
American Physical Society
Citation
Chatrchyan, S. et al. “Measurement of the Rapidity and Transverse Momentum Distributions of Z Bosons in Pp Collisions at Sqrt[(]s)=7  TeV.” Physical Review D 85.3 (2012): Web. 11 May 2012. © 2012 American Physical Society
Version: Final published version
ISSN
1550-7998
1089-4918

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