Measurement of the cross section and angular correlations for associated production of a Z boson with b hadrons in pp collisions at √s = 7 TeV


Autoria(s): Chatrchyan; Pernie, Luca; Reis, Thomas; Seva, Tomislav; Thomas, Laurent; Vander Velde, Catherine; Vanlaer, Pascal; Wang, Jun; Clerbaux, Barbara; De Lentdecker, Gilles; Favart, Laurent; Gay, Arnaud; Hreus, Tomas; Leonard, Alexandre; Marage, Pierre; Mohammadi, Abdollah
Data(s)

01/12/2013

Resumo

A study of proton-proton collisions in which two b hadrons are produced in association with a Z boson is reported. The collisions were recorded at a centre-of-mass energy of 7TeV with the CMS detector at the LHC, for an integrated luminosity of 5:2 fb-1. The b hadrons are identified by means of displaced secondary vertices, without the use of reconstructed jets, permitting the study of b-hadron pair production at small angular separation. Differential cross sections are presented as a function of the angular separation of the b hadrons and the Z boson. In addition, inclusive measurements are presented. For both the inclusive and differential studies, different ranges of Z boson momentum are considered, and each measurement is compared to the predictions from different event generators at leading-order and next-to-leading-order accuracy. Copyright CERN.

0

SCOPUS: cp.j

info:eu-repo/semantics/published

Formato

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Identificador

uri/info:doi/10.1007/JHEP12(2013)039

http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/206174

Idioma(s)

en

Fonte

The Journal of high energy physics, 2013 (12

Palavras-Chave #Physique des particules élémentaires #Hadron-hadron scattering
Tipo

info:eu-repo/semantics/article

info:ulb-repo/semantics/articlePeerReview

info:ulb-repo/semantics/openurl/article