Search for heavy Majorana neutrinos in mu mu jets ande e jets events in pp collisions at root s 7 TeV
Yazarlar (1)
Doç. Dr. Mustafa Numan BAKIRCI Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Physics Letters Section B Nuclear Elementary Particle and High Energy Physics (Q4)
Dergi ISSN 0370-2693 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI
Makale Dili İngilizce Basım Tarihi 01-2012
Cilt / Sayı / Sayfa 717 / 1 / 109–128 DOI 10.1016/j.physletb.2012.09.012
UAK Araştırma Alanları
Yüksek Enerji ve Parçacık Fiziği
Özet
A search is performed for heavy Majorana neutrinos (N) using an event signature defined by two same-sign charged leptons of the same flavour and two jets. The data correspond to an integrated luminosity of 4.98 fb(-1) of pp collisions at a centre-of-mass energy of 7 TeV collected with the CMS detector at the Large Hadron Collider. No excess of events is observed beyond the expected standard model background and therefore upper limits are set on the square of the mixing parameter, vertical bar V-lN vertical bar(2), for l = e. mu, as a function of heavy Majorana-neutrino mass. These are the first direct upper limits on the heavy Majorananeutrino mixing for m(N) > 90 GeV. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.
Anahtar Kelimeler
CMS | Heavy neutrino | Physics