Measurement of jet multiplicity distributions in t t-bar production in pp collisions at sqrt(s) = 7 TeV
The normalised differential top quark-antiquark production cross section is measured as a function of the jet multiplicity in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC with the CMS detector. The measurement is performed in both the dilepton and lepton + jets decay channels using data corresponding to an integrated luminosity of 5.0 inverse femtobarns. Using a procedure to associate jets to decay products of the top quarks, the differential cross section of the t t-bar production is determined as a function of the additional jet multiplicity in the lepton + jets channel. Furthermore, the fraction of events with no additional jets is measured in the dilepton channel, as a function of the threshold on the jet transverse momentum. The measurements are compared with predictions from perturbative quantum chromodynamics and no significant deviations are observed.
- Authors:
-
[1]
- Yerevan Physics Institute (Armenia). et al.
- Publication Date:
- Report Number(s):
- CMS-TOP-12-018; CERN-PH-EP-2014-048; FERMILAB-PUB-14-167-CMS
Journal ID: ISSN 1434-6052; arXiv eprint number arXiv:1404.3171
- Type:
- Accepted Manuscript
- Journal Name:
- European physical journal. C, Particles and fields (Online)
- Additional Journal Information:
- Journal Name: European physical journal. C, Particles and fields (Online); Journal Volume: 74; Journal Issue: 8; Related Information: See Erratum version, http://dx.doi.org/10.1140/epjc/s10052-015-3437-2 which is OSTIID 1234827; Journal ID: ISSN 1434-6052
- Publisher:
- Springer
- Research Org:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Org:
- USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
- Contributing Orgs:
- CMS Collaboration
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
- OSTI Identifier:
- 1177126
- Free Publicly Accessible Full Text
-
Accepted Manuscript (DOE)
- Publisher's Version of Record
- https://doi.org/10.1140/epjc/s10052-014-3014-0