Measurement of the production cross sections for a Z boson and one or more b jets in pp collisions at root s=7 TeV

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10284457" target="_blank" >RIV/00216208:11320/14:10284457 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/JHEP06(2014)120" target="_blank" >http://dx.doi.org/10.1007/JHEP06(2014)120</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP06(2014)120" target="_blank" >10.1007/JHEP06(2014)120</a>

Result language
angličtina
Original language name
Measurement of the production cross sections for a Z boson and one or more b jets in pp collisions at root s=7 TeV
Original language description
The production of a Z boson, decaying into two leptons and produced in association with one or more b jets, is studied using proton-proton collisions delivered by the LHC at a centre-of-mass energy of 7 TeV. The data were recorded in 2011 with the CMS detector and correspond to an integrated luminosity of 5 fb(-1). The Z(ll) + b-jets cross sections (where ll = mu mu or ee) are measured separately for a Z boson produced with exactly one b jet and with at least two b jets. In addition, a cross section ratio is extracted for a Z boson produced with at least one b jet, relative to a Z boson produced with at least one jet. The measured cross sections are compared to various theoretical predictions, and the data favour the predictions in the five-flavour scheme, where b quarks are assumed massless. The kinematic properties of the reconstructed particles are compared with the predictions from the MadGraph event generator using the pythia parton shower simulation.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BF - Elementary particle theory and high energy physics
OECD FORD branch
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Project
<a href="/en/project/LG13031" target="_blank" >LG13031: Collaboration of the Czech Republic with CERN</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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