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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

Chatrchyan, S ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1007/JHEP12(2013)039
  3. Publisher: 2013
  4. Abstract:
  5. 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
  6. Keywords:
  7. Hadron-hadron scattering
  8. Source: Journal of High Energy Physics ; Volume 2013, Issue 12 , 2013 ; 11266708 (ISSN)
  9. URL: http://link.springer.com/article/10.1007%2FJHEP12%282013%29039