Search for Leptoquarks Coupled to Third-Generation Quarks in Proton-Proton Collisions at root s=13 TeV
dc.WoS.categories | Physics, Multidisciplinary | en_US |
dc.contributor.author | Yetkin, Elif Aslı | |
dc.date.accessioned | 2020-04-30T12:54:25Z | |
dc.date.available | 2020-04-30T12:54:25Z | |
dc.date.issued | 2018-12-12 | |
dc.department | Fakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümü | en_US |
dc.description.abstract | Three of the most significant measured deviations from standard model predictions, the enhanced decay rate for B -> D-(*())tau nu, hints of lepton universality violation in B -> K-(*())ll decays, and the anomalous magnetic moment of the muon, can be explained by the existence of leptoquarks (LQs) with large couplings to third-generation quarks and masses at the TeV scale. The existence of these states can be probed at the LHC in high energy proton-proton collisions. A novel search is presented for pair production of LQs coupled to a top quark and a muon using data at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1), recorded by the CMS experiment. No deviation from the standard model prediction has been observed and scalar LQs decaying exclusively into t mu are excluded up to masses of 1420 GeV. The results of this search are combined with those from previous searches for LQ decays into t tau and b nu, which excluded scalar LQs below masses of 900 and 1080 GeV. Vector LQs are excluded up to masses of 1190 GeV for all possible combinations of branching fractions to t mu, t tau and b nu. With this analysis, all relevant couplings of LQs with an electric charge of -1/3 to third-generation quarks are probed for the first time. | en_US |
dc.fullTextLevel | Full Text | en_US |
dc.identifier.doi | 10.1103/PhysRevLett.121.241802 | en_US |
dc.identifier.issn | 0031-9007 | |
dc.identifier.pmid | 30608761 | en_US |
dc.identifier.scopus | 2-s2.0-85059290811 | en_US |
dc.identifier.uri | https://hdl.handle.net/11411/1989 | |
dc.identifier.uri | https://doi.org/10.1103/PhysRevLett.121.241802 | |
dc.identifier.wos | WOS:000452960100003 | en_US |
dc.identifier.wosquality | Q1 | en_US |
dc.indekslendigikaynak | Web of Science | en_US |
dc.indekslendigikaynak | Scopus | en_US |
dc.indekslendigikaynak | PubMed | en_US |
dc.issue | 24 | en_US |
dc.language.iso | en | en_US |
dc.national | International | en_US |
dc.numberofauthors | 500+ | en_US |
dc.publisher | AMER PHYSICAL SOC | en_US |
dc.relation.ispartof | Physical Review Letters | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | PAIR | en_US |
dc.title | Search for Leptoquarks Coupled to Third-Generation Quarks in Proton-Proton Collisions at root s=13 TeV | en_US |
dc.type | Article | en_US |
dc.volume | 121 | en_US |