Advanced Search

Show simple item record

dc.contributor.authorÇetin, Serkant Ali
dc.contributor.authorATLAS Collaboration
dc.identifier.citationAad, G, Abbott, B., Abdallah, J., Abdelalim, A.A., Abdesselam, A., Abdinov, O. ... ATLAS Collaboration. (2011). Inclusive search for same-sign dilepton signatures in pp collisions at root s=7 TeV with the ATLAS detector. Journal of Hight Energy Physics, Issue (10), 47p.
dc.identifier.other000308326000001 (WOS)
dc.description.abstractAn inclusive search is presented for new physics in events with two isolated leptons (e or mu) having the same electric charge. The data are selected from events collected from p p collisions at root s = 7 TeV by the ATLAS detector and correspond to an integrated luminosity of 34 pb(-1). The spectra in dilepton invariant mass, missing transverse momentum and jet multiplicity are presented and compared to Standard Model predictions. In this event sample, no evidence is found for contributions beyond those of the Standard Model. Limits are set on the cross-section in a fiducial region for new sources of same-sign high-mass dilepton events in the ee, e mu and mu mu channels. Four models predicting same-sign dilepton signals are constrained: two descriptions of Majorana neutrinos, a cascade topology similar to supersymmetry or universal extra dimensions, and fourth generation d-type quarks. Assuming a new physics scale of 1 TeV, Majorana neutrinos produced by an effective operator V with masses below 460 GeV are excluded at 95% confidence level. A lower limit of 290 GeV is set at 95% confidence level on the mass of fourth generation d-type quarks.en_US
dc.subjectHadron-Hadron Scatteringen_US
dc.subjectATLAS Detectoren_US
dc.titleInclusive search for same-sign dilepton signatures in pp collisions at root s=7 TeV with the ATLAS detectoren_US
dc.relation.journalJournal of Hight Energy Physicsen_US
dc.departmentDoğuş Üniversitesi, Fen Edebiyat Fakültesi, Fizik Bölümüen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.institutionauthorÇetin, Serkant Ali

Files in this item


This item appears in the following Collection(s)

Show simple item record