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Search for Displaced Supersymmetry in Events with an Electron and a Muon with Large Impact Parameters

Abstract: A search for new long-lived particles decaying to leptons is presented using proton-proton collisions produced by the LHC at vs = 8?TeV. Data used for the analysis were collected by the CMS detector and correspond to an integrated luminosity of 19.7 fb-1. Events are selected with an electron and muon with opposite charges that both have transverse impact parameter values between 0.02 and 2 cm. The search has been designed to be sensitive to a wide range of models with nonprompt e-µ final states. Limits are set on the “displaced supersymmetry” model, with pair production of top squarks decaying into an e-µ final state via R-parity-violating interactions. The results are the most restrictive to date on this model, with the most stringent limit being obtained for a top squark lifetime corresponding to ct=2??cm, excluding masses below 790 GeV at 95% confidence level.

 Fuente: Phys. Rev. Lett. Vol. 114, Num. 6 Pag. 061801, (2015)

 Editorial: American Physical Society

 Fecha de publicación: 01/02/2015

 Nº de páginas: 15

 Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevLett.114.061801

 ISSN: 0031-9007,1079-7114

 Proyecto español: FPA2014-55295-C3-1-R ; FPA 2011-28694-C02-01

 Url de la publicación: https://doi.org/10.1103/PhysRevLett.114.061801

Autoría

KHACHATRYAN, VLADIMIR

JAVIER ANDRES BROCHERO CIFUENTES

MARCOS FERNANDEZ GARCIA

ALBERTO GRAZIANO

MARIA AMPARO LOPEZ VIRTO

RAFAEL JOSE MARCO DE LUCAS

FRANCISCA JAVIELA MUÑOZ SANCHEZ

ANA YAIZA RODRIGUEZ MARRERO