dc.contributor.author | Kuday, Sinan | |
dc.contributor.author | Çakır, Orhan | |
dc.contributor.author | Çiftçi, Abbas Kenan | |
dc.contributor.author | Çiftçi, Rena | |
dc.contributor.author | Yıldız (Duran), Hatice | |
dc.date.accessioned | 2020-03-16T00:55:43Z | |
dc.date.available | 2020-03-16T00:55:43Z | |
dc.date.issued | 2012 | |
dc.identifier.uri | https://doi.org/10.1016/j.physletb.2012.05.022 | tr_TR |
dc.identifier.uri | http://hdl.handle.net/20.500.12575/70617 | |
dc.description.abstract | A search for the production of single top-quarks via flavour-changing neutral-currents is presented. Data collected with the ATLAS detector at a centre-of-mass energy of s=7 TeV, corresponding to an integrated luminosity of 2.05 fb−1, are used. Candidate events with a semileptonic top-quark decay signature are classified as signal- or background-like events by using several kinematic variables as input to a neural network. No signal is observed in the neural network output distribution and a Bayesian upper limit is placed on the production cross-section. The observed upper limit at 95% confidence level on the cross-section multiplied by the t→Wb branching fraction is measured to be σqg→t×B(t→Wb)<3.9 pb. This upper limit is converted using a model-independent approach into upper limits on the coupling strengths κugt/Λ<6.9⋅10−3 TeV−1 and κcgt/Λ<1.6⋅10−2 TeV−1, where Λ is the new physics scale, and on the branching fractions B(t→ug)<5.7⋅10−5 and B(t→cg)<2.7⋅10−4. © 2012 CERN | tr_TR |
dc.language.iso | en | tr_TR |
dc.relation.ispartofseries | ;0370-2693 | |
dc.relation.isversionof | 10.1016/j.physletb.2012.05.022 | tr_TR |
dc.title | Search for FCNC single top-quark production at √s = 7 TeV with the ATLAS detector ✩ | tr_TR |
dc.type | Article | tr_TR |
dc.relation.journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | tr_TR |
dc.contributor.department | Fen Fakültesi | tr_TR |
dc.identifier.volume | 712 | tr_TR |
dc.identifier.issue | 4 | tr_TR |
dc.identifier.startpage | 351 | tr_TR |
dc.identifier.endpage | 369 | tr_TR |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | tr_TR |
dc.description.index | wos | |
dc.description.index | Scopus | |