Article Dans Une Revue Journal of High Energy Physics Année : 2013

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

S. Chatrchyan
  • Fonction : Auteur
P. Busson
C. Mironov
P. Paganini
J.-L. Agram
E. Conte
D. Contardo

Résumé

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 7 TeV with the CMS detector at the LHC, for an integrated luminosity of 5.2 inverse femtobarns. 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.

Dates et versions

in2p3-00873024 , version 1 (15-10-2013)

Identifiants

Citer

S. Chatrchyan, M. Besançon, S. Choudhury, F. Couderc, M. Dejardin, et al.. Measurement of the cross section and angular correlations for associated production of a Z boson with b hadrons in pp collisions at sqrt(s) = 7 TeV. Journal of High Energy Physics, 2013, 12(2013), pp.039. ⟨10.1007/JHEP12(2013)039⟩. ⟨in2p3-00873024⟩
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