Probing neutrino mass with multilepton production at the Tevatron in the simplest R-parity violation model

ABSTRACT: We analyse the production of multileptons in the simplest supergravity model with bilinear violation of R parity at the Fermilab Tevatron. Despite the small R-parity violating couplings needed to generate the neutrino masses indicated by current atmospheric neutrino data, the lightest supe...

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Autores:
Magro, Mauricio Bernardino
de Campos, Fernando
Éboli, Oscar J. P.
Porod, William
Restrepo Quintero, Diego Alejandro
Valle, José W. F.
Tipo de recurso:
Article of investigation
Fecha de publicación:
2003
Institución:
Universidad de Antioquia
Repositorio:
Repositorio UdeA
Idioma:
eng
OAI Identifier:
oai:bibliotecadigital.udea.edu.co:10495/8305
Acceso en línea:
http://hdl.handle.net/10495/8305
Palabra clave:
Modelo estándar
Multilepton
Neutrinos
Paridad R
Supersimetría
Rights
openAccess
License
Atribución 2.5 Colombia (CC BY 2.5 CO)
Description
Summary:ABSTRACT: We analyse the production of multileptons in the simplest supergravity model with bilinear violation of R parity at the Fermilab Tevatron. Despite the small R-parity violating couplings needed to generate the neutrino masses indicated by current atmospheric neutrino data, the lightest supersymmetric particle is unstable and can decay inside the detector. This leads to a phenomenology quite distinct from that of the R-parity conserving scenario. We quantify by how much the supersymmetric multilepton signals differ from the R-parity conserving expectations, displaying our results in the m0 x m1/2 plane. We show that the presence of bilinear R-parity violating interactions enhances the supersymmetric multilepton signals over most of the parameter space, specially at moderate and large m0.