Search For The Rare Decay of the W Boson İnto A Pion And A Photon İn Proton-Proton Collisions at ?s = 13 TeV
| dc.authorid | 291820 | en_US |
| dc.contributor.author | Güler, Emine Gürpınar | |
| dc.contributor.author | .;, ve diğer | |
| dc.date.accessioned | 2021-09-06T13:09:47Z | |
| dc.date.available | 2021-09-06T13:09:47Z | |
| dc.date.issued | 2021 | |
| dc.department | İstanbul Beykent Üniversitesi | en_US |
| 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). (C) 2021 The Author(s). Published by Elsevier B.V. | en_US |
| dc.identifier.citation | Physics Letters B Volume 819 Article Number 136409, 2021 | en_US |
| dc.identifier.doi | 10.1016/j.physletb.2021.136409 | |
| dc.identifier.issn | 2168-8184 | |
| dc.identifier.scopus | 2-s2.0-85111246735 | en_US |
| dc.identifier.scopusquality | N/A | en_US |
| dc.identifier.uri | https://doi.org/10.1016/j.physletb.2021.136409 | |
| dc.identifier.wos | WOS:000679259200060 | en_US |
| dc.identifier.wosquality | N/A | en_US |
| dc.indekslendigikaynak | Web of Science | en_US |
| dc.indekslendigikaynak | Scopus | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | Elsevier [Commercial Publisher] | en_US |
| dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | 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 İnto A Pion And A Photon İn Proton-Proton Collisions at ?s = 13 TeV | en_US |
| dc.type | Article | en_US |
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