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Title: Measurements of single top quark production cross sections and |Vtb| in pp collisions at √s=1.96 TeV

We present measurements of production cross sections of single top quarks in pp collisions at √s = 1.96 TeV in a data sample corresponding to an integrated luminosity of 5.4 fb-1 collected by the D0 detector at the Fermilab Tevatron Collider. We select events with an isolated electron or muon, an imbalance in transverse energy, and two, three, or four jets, with one or two of them containing a bottom hadron. We obtain an inclusive cross section of Σ(pp → tb + X, tqb + X) = 3.43-0.74+0.73 pb and use it to extract the CKM matrix element 0.79 < |Vtb| {le} 1 at the 95% C.L. We also measure Σ(pp → tb + X) = 0.68-0.35+0.38pb and Σ(pp → tqb + X) = 2.86-0.63+0.69pb when assuming, respectively, tqb and tb production rates as predicted by the standard model.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [1] ;  [6] ;  [7] ;  [8] ;  [9] ;  [10]
  1. Joint Inst. for Nuclear Research (JINR), Dubna (Russian Federation)
  2. Univ. of Oklahoma, Norman, OK (United States)
  3. Tata Inst. of Fundamental Research, Bombay (India)
  4. Univ. of Illinois, Chicago, IL (United States)
  5. Florida State Univ., Tallahassee, FL (United States)
  6. Petersburg Nuclear Physics Inst., St. Petersburg (Russia)
  7. Univ. of Michigan, Ann Arbor, MI (United States)
  8. Northeastern Univ., Boston, MA (United States)
  9. Centro Brasileiro de Pesquisas, Rio de Janeiro (Brazil)
  10. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States). et al.
Publication Date:
OSTI Identifier:
1023974
Report Number(s):
FERMILAB-PUB--11-380-E
Journal ID: ISSN 1550-7998; arXiv eprint number arXiv:1108.3091; TRN: US1104642
Grant/Contract Number:
AC02-07CH11359
Type:
Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 84; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE SC Office of High Energy Physics (SC-25); ; USDOE Office of Science (SC)
Contributing Orgs:
D0 Collaboration
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CROSS SECTIONS; ELECTRONS; FERMILAB TEVATRON; LUMINOSITY; MATRIX ELEMENTS; PRODUCTION; STANDARD MODEL; T QUARKS; TRANSVERSE ENERGY Experiment-HEP