Number of the records: 1
Evidence for s-channel single top quark production in ppˉ collisions at √s = 1.96 TeV
- 1.
SYSNO ASEP 0424404 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Evidence for s-channel single top quark production in ppˉ collisions at √s = 1.96 TeV Author(s) Abazov, V. M. (RU)
Abbott, B. (US)
Acharya, B.S. (IN)
Kupčo, Alexander (FZU-D) RID, ORCID
Lokajíček, Miloš (FZU-D) RID, ORCIDNumber of authors 359 Source Title Physics Letters. B. - : Elsevier - ISSN 0370-2693
Roč. 726, 4-5 (2013), s. 656-664Number of pages 9 s. Language eng - English Country NL - Netherlands Keywords D0 ; channel cross section ; measured ; top ; single production ; Batavia TEVATRON Coll ; CKM matrix ; anti-p p ; interaction ; bottom ; associated production Subject RIV BG - Nuclear, Atomic and Molecular Physics, Colliders R&D Projects LG12006 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support FZU-D - RVO:68378271 UT WOS 000327907000011 EID SCOPUS 84886241215 DOI 10.1016/j.physletb.2013.09.048 Annotation We present measurements of the cross sections for the two main production modes of single top quarks in ppˉ collisions at s√=1.96 TeV in the Run II data collected with the D0 detector at the Fermilab Tevatron Collider, corresponding to an integrated luminosity of 9.7 fb−1. The s-channel cross section is measured to be σ(ppˉ→tb+X)=1.10+0.33−0.31 pb with no assumptions on the value of the t-channel cross section. Similarly, the t-channel cross section is measured to be σ(ppˉ→tqb+X)=3.07+0.54−0.49 pb. We also measure the s+t combined cross section as σ(ppˉ→tb+X,tqb+X)=4.11+0.60−0.55 pb and set a lower limit on the CKM matrix element vertical bar V-tb vertical bar> 0.92 at m _t =172 GeV. The probability to measure a cross section for the s channel at the observed value or higher in the absence of signal is 1.0 x 10(-4), corresponding to a significance of 3.7 standard deviations. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2014
Number of the records: 1