Differential cross section measurements for the production of a W boson in association with jets in proton-proton collisions at root s=7 TeV

Title
Differential cross section measurements for the production of a W boson in association with jets in proton-proton collisions at root s=7 TeV
Authors
김태정
Keywords
CMS; Physics; W plus jets; Vector boson; Jets; Electroweak; Standard model
Issue Date
2015-01
Publisher
ELSEVIER SCIENCE BV
Citation
PHYSICS LETTERS B, v. 741, Page. 12-37
Abstract
Measurements are reported of differential cross sections for the production of a W boson, which decays into a muon and a neutrino, in association with jets, as a function of several variables, including the transverse momenta (p(T)) and pseudorapidities of the four leading jets, the scalar sum of jet transverse momenta (H-T), and the difference in azimuthal angle between the directions of each jet and the muon. The data sample of pp collisions at a centre-of-mass energy of 7 TeV was collected with the CMS detector at the LHC and corresponds to an integrated luminosity of 5.0 fb (1). The measured cross sections are compared to predictions from Monte Carlo generators, MADGRAPH + PYTHIA and SHERPA, and to next-to-leading-order calculations from BLACKHAT + SHERPA. The differential cross sections are found to be in agreement with the predictions, apart from the p(T) distributions of the leading jets at high p(T) values, the distributions of the H-T at high-H-T and low jet multiplicity, and the distribution of the difference in azimuthal angle between the leading jet and the muon at low values. (C) 2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/).
URI
http://www.sciencedirect.com/science/article/pii/S0370269314008740http://hdl.handle.net/20.500.11754/22089
ISSN
0370-2693; 1873-2445
DOI
http://dx.doi.org/10.1016/j.physletb.2014.12.003
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COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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