Search for heavy Majorana neutrinos in same-sign dilepton channels in proton-proton collisions at √s=13 TeV

The CMS collaboration

Результат исследования: Научные публикации в периодических изданияхстатья

17 Цитирования (Scopus)

Аннотация

A search is performed for a heavy Majorana neutrino (N), produced in leptonic decay of a W boson propagator and decaying into a W boson and a lepton, with the CMS detector at the LHC. The signature used in this search consists of two same-sign leptons, in any flavor combination of electrons and muons, and at least one jet. The data were collected during 2016 in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1. The results are found to be consistent with the expected standard model background. Upper limits are set in the mass range between 20 and 1600 GeV in the context of a Type-I seesaw mechanism, on |VeN|2, |VμN|2, and |VeNVμN *|2/(|VeN|2 + |VμN|2), where VℓN is the matrix element describing the mixing of N with the standard model neutrino of flavor ℓ = e, μ. For N masses between 20 and 1600 GeV, the upper limits on |VℓN|2 range between 2.3 × 10−5 and unity. These are the most restrictive direct limits for heavy Majorana neutrino masses above 430 GeV.[Figure not available: see fulltext.]

Язык оригиналаанглийский
Номер статьи122
Число страниц55
ЖурналJournal of High Energy Physics
Том2019
Номер выпуска1
DOI
СостояниеОпубликовано - 1 янв 2019

Fingerprint Подробные сведения о темах исследования «Search for heavy Majorana neutrinos in same-sign dilepton channels in proton-proton collisions at √s=13 TeV». Вместе они формируют уникальный семантический отпечаток (fingerprint).

Цитировать