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Title: Tevatron combination of single-top-quark cross sections and determination of the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element $$\bf V_{tb}$$

In this study, we present the final combination of CDF and D0 measurements of cross sections for single-top-quark production in proton-antiproton collisions at a center-of-mass energy of 1.96 TeV. The data correspond to total integrated luminosities of up to 9.7 fb-1 per experiment. The t-channel cross section is measured to be σt= 2.25-0.31+0.29 pb. We also present the combinations of the two-dimensional measurements of the s- vs t-channel cross section. In addition, we give the combination of the s+t channel cross section measurement resulting in σs+t= 3.30-0.40+0.52 pb, without assuming the standard model value for the ratio σst. The resulting value of the magnitude of the top-to-bottom quark coupling is |Vtb|= 1.02-0.05+0.06, corresponding to |Vtb| > 0.92 at the 95% C.L.
Authors:
 [1] ;  [2]
  1. Univ. of Helsinki, Helsinki (Finland)
  2. (Finland). et al.
Publication Date:
OSTI Identifier:
1235072
Report Number(s):
FERMILAB-PUB--15-088-E
Journal ID: ISSN 0031-9007; arXiv eprint number arXiv:1503.05027; TRN: US1600802
Grant/Contract Number:
AC02-07CH11359
Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 115; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Research Org:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Orgs:
CDF Collaboration; D0 Collaboration
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS Experiment-HEP