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

Authors

The CMS Collaboration
S. Chatrchyan, Yerevan Physics Institute
V. Khachatryan, Yerevan Physics Institute
Marc M. Baarmand, Florida Institute of Technology
B. Dorney, Florida Institute of Technology
Marcus Hohlmann, Florida Institute of Technology
Himali Kalakhety, Florida Institute of Technology
Francisco Yumiceva, Florida Institute of Technology

Document Type

Article

Publication Title

Journal of High Energy Physics

Abstract

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 TeVwith 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.

DOI

doi.org/10.1007/JHEP12(2013)039

Publication Date

12-2013

Recommended Citation

The CMS collaboration., Chatrchyan, S., Khachatryan, V. et al. 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. J. High Energ. Phys. 2013, 39 (2013). https://doi.org/10.1007/JHEP12(2013)039