dc.contributor.author | CMS Collaboration | |
dc.date.accessioned | 2021-08-13T07:34:09Z | |
dc.date.available | 2021-08-13T07:34:09Z | |
dc.date.issued | 2021 | en_US |
dc.identifier.citation | CMS collaboration. (2016). Search for new physics in same-sign dilepton events in proton-proton collisions at sqrt (s)= 13 TeV. arXiv preprint arXiv:1605.03171. | en_US |
dc.identifier.issn | 0370-2693 | |
dc.identifier.uri | https://hdl.handle.net/20.500.12960/1242 | |
dc.description.abstract | A search is performed for the rare decay W-+/--> pi(+/-)gamma in proton-proton collisions at root s = 13 TeV. Data corresponding to an integrated luminosity of 137 fb(-1) were collected during 2016 to 2018 with the CMS detector. This analysis exploits a novel search strategy based on W boson production in top quark pair events. An inclusive search for the W-+/--> pi(+/-)gamma decay is not optimal at the LHC because of the high trigger thresholds. Instead, a trigger selection is exploited in which the W boson originating from one of the top quarks is used to tag the event in a leptonic decay. The W boson emerging from the other top quark is used to search for the W-+/--> pi(+/-)gamma signature. Such decays are characterized by an isolated track pointing to a large energy deposit, and by an isolated photon of large transverse momentum. The presence of b quark jets reduces the background from the hadronization of light-flavor quarks and gluons. The W-+/- -> pi(+/-)gamma decay is not observed. An upper exclusion limit is set to this branching fraction, corresponding to 1.50 x 10(-5) at 95% confidence level, whereas the expected upper exclusion limit is 0.85(-0.29)(+0.52) x 10(-5). | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier | en_US |
dc.relation.ispartof | Physics Letters B | en_US |
dc.relation.isversionof | 10.1016/j.physletb.2021.136409 | en_US |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | CMS | en_US |
dc.subject | Standard model | en_US |
dc.subject | EWK | en_US |
dc.title | Search for the rare decay of the W boson into a pion and a photon in proton-proton collisions at root s=13 TeV | en_US |
dc.type | article | en_US |
dc.authorid | 0000-0002-0103-1488 | en_US |
dc.department | Mühendislik Fakültesi, Elektrik-Elektronik Mühendisliği Bölümü | en_US |
dc.contributor.institutionauthor | Özdemir, Kadri | |
dc.identifier.volume | Volume 819 | en_US |
dc.identifier.issue | 136409 | en_US |
dc.identifier.startpage | 1 | en_US |
dc.identifier.endpage | 24 | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |