Search for flavor-changing neutral-current couplings between the top quark and the Z boson with proton-proton collisions at ?s=13 TeV with the ATLAS detector

Basit Öğe Kaydı
dc.WoS.categoriesAstronomy & AstrophysicsPhysics, Particles & Fieldsen_US
dc.authorid0000-0001-5050-8441en_US
dc.contributor.authorÇetin, Serkant Ali
dc.date.accessioned2024-04-26T08:51:16Z
dc.date.available2024-04-26T08:51:16Z
dc.date.issued2023-08-30
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümüen_US
dc.description.abstractA search for flavor-changing neutral-current couplings between a top quark, an up or charm quark, and a Z boson is presented, using proton-proton collision data at root s = 13 TeV collected by the ATLAS detector at the Large Hadron Collider. The analyzed data set corresponds to an integrated luminosity of 139 fb(-1). The search targets both single-top- quark events produced as gq -> tZ (with q = u, c) and top-quark-pair events, with one top quark decaying through the t -> Zq channel. The analysis considers events with three leptons (electrons or muons), a b-tagged jet, possible additional jets, and missing transverse momentum. The data are found to be consistent with the background-only hypothesis and 95% confidence-level limits on the t -> Zq branching ratios, assuming only tensor operators of the Standard Model effective field theory framework contribute to the tZq vertices. These are 6.2 x 10(-5) (13 x 10(-5)) for t -> Zu (t -> Zc) for a left-handed tZq coupling, and 6.6 x 10(-5) (12 x 10(-5)) in the case of a right-handed coupling. These results are interpreted as 95% CL upper limits on the strength of the corresponding couplings, yielding limits for |C-uW((13))*| and |C-uB((13))*| (|C-uW((31))| and |C-uB((31))|) of 0.15 (0.16), and limits for |C-uW((23))*| and |C-uB((23))*| (|C-uW((32))| and |C-uB((32))|) of 0.22 (0.21), assuming a new-physics energy scale Lambda(NP) of 1 TeV.en_US
dc.fullTextLevelFull Texten_US
dc.identifier.doi10.1103/PhysRevD.108.032019
dc.identifier.issn2470-0029
dc.identifier.issn2470-0010
dc.identifier.urihttps://hdl.handle.net/11411/5332
dc.identifier.urihttps://doi.org/10.1103/PhysRevD.108.032019
dc.identifier.wosWOS:001096900700001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.issue3en_US
dc.language.isoenen_US
dc.nationalInternationalen_US
dc.numberofauthors200+en_US
dc.publisherAMER PHYSICAL SOCen_US
dc.relation.ispartofPHYSICAL REVIEW Den_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectPLUS PLUSen_US
dc.subjectPARTON DISTRIBUTIONSen_US
dc.subjectPAIR PRODUCTIONen_US
dc.subjectPHYSICSen_US
dc.subjectDECAYen_US
dc.titleSearch for flavor-changing neutral-current couplings between the top quark and the Z boson with proton-proton collisions at ?s=13 TeV with the ATLAS detector
dc.typeArticle
dc.volume108en_US

Dosyalar

Orijinal paket
Listeleniyor 1 - 1 / 1
Küçük Resim
İsim:
2023WosÇetin.pdf
Boyut:
1.11 MB
Biçim:
Adobe Portable Document Format
Açıklama:
İndir
Lisans paketi
Listeleniyor 1 - 1 / 1
Küçük Resim Yok
İsim:
license.txt
Boyut:
1.71 KB
Biçim:
Item-specific license agreed upon to submission
Açıklama:
İndir

Koleksiyon

Faculty of Engineering and Natural Sciences
Web of Science Indexed Publications