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dc.contributor.authorSirunyan, А. М.en
dc.contributor.authorTumasyan, A. R.en
dc.contributor.authorAdam, Wolfgangen
dc.contributor.authorTyurin, Nikolay Evgenjevichen
dc.contributor.authorBabaev, Anton Anatoljevichen
dc.contributor.authorOkhotnikov, Vitaly Vladimirovichen
dc.contributor.authorSukhikh, Leonid Grigorievichen
dc.date.accessioned2022-07-01T04:01:51Z-
dc.date.available2022-07-01T04:01:51Z-
dc.date.issued2021-
dc.identifier.citationSearch for the rare decay of the W boson into a pion and a photon in proton-proton collisions at √s=13TeV / А. М. Sirunyan, A. R. Tumasyan, W. Adam [et al.] // Physics Letters B. — 2021. — Vol. 819. — [136409, 24 p.].en
dc.identifier.urihttp://earchive.tpu.ru/handle/11683/72487-
dc.description.abstractA search is performed for the rare decay W±→π±γ in proton-proton collisions at √s =13TeV. Data corresponding to an integrated luminosity of 137fb−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±→π±γ 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±→π±γ 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±→π±γ decay is not observed. An upper exclusion limit is set to this branching fraction, corresponding to 1.50×10−5 at 95% confidence level, whereas the expected upper exclusion limit is 0.85−0.29+0.52×10−5.en
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherElsevieren
dc.relation.ispartofPhysics Letters B. 2021. Vol. 819en
dc.rightsinfo:eu-repo/semantics/openAccess-
dc.rightsAttribution-NonCommercial 4.0 Internationalen
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/-
dc.sourcePhysics Letters Ben
dc.subjectCMSen
dc.subjectstandard modelen
dc.subjectEWKen
dc.titleSearch for the rare decay of the W boson into a pion and a photon in proton-proton collisions at √s=13TeVen
dc.typeArticleen
dc.typeinfo:eu-repo/semantics/article-
dc.typeinfo:eu-repo/semantics/publishedVersion-
dcterms.audienceResearchesen
local.description.firstpage136409-
local.filepathreprint-nw-38211.pdf-
local.filepathhttps://doi.org/10.1016/j.physletb.2021.136409-
local.identifier.bibrecRU\TPU\network\38211-
local.identifier.perskeyRU\TPU\pers\35154-
local.identifier.perskeyRU\TPU\pers\36453-
local.identifier.perskeyRU\TPU\pers\31554-
local.localtypeСтатьяru
local.volume819-
dc.identifier.doi10.1016/j.physletb.2021.136409-
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