par Chatrchyan, Serguei;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 ; [et al.]
Référence The Journal of high energy physics, 2013, 12
Publication Publié, 2013-12
;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 ; [et al.]Référence The Journal of high energy physics, 2013, 12
Publication Publié, 2013-12
Article révisé par les pairs
| 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 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. |
