Search for new phenomena in events with three charged leptons at a center-of-mass energy of 7 TeV with the ATLAS detector


Autoria(s): ATLAS, Collaboration; Agustoni, Marco; Ancu, Lucian; Battaglia, Andreas; Beck, Hans Peter; Borer, Claudia; Ereditato, Antonio; Gallo, Valentina; Haug, Sigve; Kabana, Sonja; Kruker, Tobias; Marti, Lukas; Pretzl, Klaus; Schneider, Basil; Sciacca, Gianfranco; Weber, Michael
Data(s)

2013

Resumo

A generic search for anomalous production of events with at least three charged leptons is presented. The search uses a pp-collision data sample at a center-of-mass energy of root s = 7 TeV corresponding to 4.6 fb(-1) of integrated luminosity collected in 2011 by the ATLAS detector at the CERN Large Hadron Collider. Events are required to contain at least two electrons or muons, while the third lepton may either be an additional electron or muon, or a hadronically decaying tau lepton. Events are categorized by the presence or absence of a reconstructed tau-lepton or Z-boson candidate decaying to leptons. No significant excess above backgrounds expected from Standard Model processes is observed. Results are presented as upper limits on event yields from non-Standard-Model processes producing at least three prompt, isolated leptons, given as functions of lower bounds on several kinematic variables. Fiducial efficiencies for model testing are also provided. The use of the results is illustrated by setting upper limits on the production of doubly charged Higgs bosons decaying to same-sign lepton pairs.

Formato

application/pdf

application/pdf

Identificador

http://boris.unibe.ch/58398/1/1211.6312v3.pdf

http://boris.unibe.ch/58398/2/PhysRevD.87.052002.pdf

ATLAS, Collaboration; Agustoni, Marco; Ancu, Lucian; Battaglia, Andreas; Beck, Hans Peter; Borer, Claudia; Ereditato, Antonio; Gallo, Valentina; Haug, Sigve; Kabana, Sonja; Kruker, Tobias; Marti, Lukas; Pretzl, Klaus; Schneider, Basil; Sciacca, Gianfranco; Weber, Michael (2013). Search for new phenomena in events with three charged leptons at a center-of-mass energy of 7 TeV with the ATLAS detector. Physical review. D - particles, fields, gravitation, and cosmology, 87(5), 052002. Melville, N.Y.: American Physical Society 10.1103/PhysRevD.87.052002 <http://dx.doi.org/10.1103/PhysRevD.87.052002>

doi:10.7892/boris.58398

info:doi:10.1103/PhysRevD.87.052002

urn:issn:1550-7998

Idioma(s)

eng

Publicador

American Physical Society

Relação

http://boris.unibe.ch/58398/

Direitos

info:eu-repo/semantics/openAccess

info:eu-repo/semantics/openAccess

Fonte

ATLAS, Collaboration; Agustoni, Marco; Ancu, Lucian; Battaglia, Andreas; Beck, Hans Peter; Borer, Claudia; Ereditato, Antonio; Gallo, Valentina; Haug, Sigve; Kabana, Sonja; Kruker, Tobias; Marti, Lukas; Pretzl, Klaus; Schneider, Basil; Sciacca, Gianfranco; Weber, Michael (2013). Search for new phenomena in events with three charged leptons at a center-of-mass energy of 7 TeV with the ATLAS detector. Physical review. D - particles, fields, gravitation, and cosmology, 87(5), 052002. Melville, N.Y.: American Physical Society 10.1103/PhysRevD.87.052002 <http://dx.doi.org/10.1103/PhysRevD.87.052002>

Palavras-Chave #530 Physics
Tipo

info:eu-repo/semantics/article

info:eu-repo/semantics/publishedVersion

PeerReviewed