Measurement of differential top-quark-pair production cross sections in pp collisions at $$\sqrt{s} = 7\ \mathrm{TeV}$$
Normalised differential top-quark-pair production cross sections are measured in pp collisions at a centre-of-mass energy of 7 TeVat the LHC with the CMS detector using data recorded in 2011 corresponding to an integrated luminosity of 5.0 fb-1. The measurements are performed in the lepton+jets decay channels (e+jets and μ+jets) and the dilepton decay channels ( , μ+ μ-, and μ ±e∓). The differential cross section is measured as a function of kinematic properties of the final-state charged leptons and jets associated to b quarks, as well as those of the top quarks and the system. The data are compared with several predictions from perturbative QCD calculations up to approximate next-to-next-to-leading-order precision. No significant deviations from the standard model are observed.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- The CMS Collaboration
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1406481
- Report Number(s):
- FERMILAB-PUB-12-776-CMS; CMS-TOP-11-013; CERN-PH-EP-2012-322; arXiv:1211.2220; 1201946
- Journal Information:
- European Physical Journal. C, Particles and Fields, Vol. 73, Issue 3; ISSN 1434-6044
- Publisher:
- Springer
- Country of Publication:
- United States
- Language:
- English
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