Search in leptonic channels for heavy resonances decaying to long-lived neutral particles


Creative Commons License

Chatrchyan S., Khachatryan V., Sirunyan A., Tumasyan A., Adam W., Aguilo E., ...Daha Fazla

JOURNAL OF HIGH ENERGY PHYSICS, 2013 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: Konu: 2
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1007/jhep02(2013)085
  • Dergi Adı: JOURNAL OF HIGH ENERGY PHYSICS

Özet

A search is performed for heavy resonances decaying to two long-lived massive neutral particles, each decaying to leptons. The experimental signature is a distinctive topology consisting of a pair of oppositely charged leptons originating at a separated secondary vertex. Events were collected by the CMS detector at the LHC during pp collisions at root s = 7 TeV, and selected from data samples corresponding to 4.1 (5.1) fb(-1) of integrated luminosity in the electron (muon) channel. No significant excess is observed above standard model expectations, and an upper limit is set with 95% confidence level on the production cross section times the branching fraction to leptons, as a function of the long-lived massive neutral particle lifetime.