Show simple item record

dc.contributor.authorCMS Collaboration
dc.date.accessioned2018-10-18T17:11:26Z
dc.date.available2018-10-18T17:11:26Z
dc.date.issued2017-02
dc.identifier.citationThe CMS collaboration, Khachatryan, V., Sirunyan, A.M. et al. J. High Energ. Phys. (2017) 2017: 28. https://doi.org/10.1007/JHEP02(2017)028en_US
dc.identifier.urihttp://hdl.handle.net/1808/26859
dc.description.abstractSingle top quark events produced in the t channel are used to set limits on anomalous Wtb couplings and to search for top quark flavour-changing neutral current (FCNC) interactions. The data taken with the CMS detector at the LHC in proton-proton collisions at s√=7 and 8 TeV correspond to integrated luminosities of 5.0 and 19.7 fb−1, respectively. The analysis is performed using events with one muon and two or three jets. A Bayesian neural network technique is used to discriminate between the signal and backgrounds, which are observed to be consistent with the standard model prediction. The 95% confidence level (CL) exclusion limits on anomalous right-handed vector, and left- and right-handed tensor Wtb couplings are measured to be |f V R | < 0.16, |f T L | < 0.057, and − 0.049 < f T R  < 0.048, respectively. For the FCNC couplings κ tug and κ tcg, the 95% CL upper limits on coupling strengths are |κ tug|/Λ < 4.1 × 10− 3 TeV−1 and |κ tcg|/Λ < 1.8 × 10− 2 TeV−1, where Λ is the scale for new physics, and correspond to upper limits on the branching fractions of 2.0 × 10−5 and 4.1 × 10−4 for the decays t → ug and t → cg, respectively.
dc.publisherSpringer Verlagen_US
dc.rights© The Author(s) 2017en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.subjectFlavour Changing Neutral Currentsen_US
dc.subjectHadron-Hadron scattering (experiments)en_US
dc.subjectTop physicsen_US
dc.titleSearch for anomalous Wtb couplings and avour-changing neutral currents in t-channel single top quark production in pp collisions at p s = 7 and 8 TeVen_US
dc.typeArticleen_US
kusw.kuauthorBaringer, Philip, S.
kusw.kudepartmentPhysics and Astronomyen_US
dc.identifier.doihttps://doi.org/10.1007/JHEP02(2017)028en_US
kusw.oaversionScholarly/refereed, publisher versionen_US
kusw.oapolicyThis item meets KU Open Access policy criteria.en_US
dc.rights.accessrightsopenAccessen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

© The Author(s) 2017
Except where otherwise noted, this item's license is described as: © The Author(s) 2017