Tau custodian searches at the LHC

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URI: http://hdl.handle.net/10481/30719
ISSN: 0370-2693
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Auteur
Águila Giménez, Francisco Del; Carmona Bermúdez, Adrián; Santiago Pérez, José
Editorial
Elsevier
Materia
Large hadron collider
 
Tau physics
 
Strong electroweak symmetry breaking
 
Custodial symmetry
 
Date
2011
Referencia bibliográfica
Águila, F.; Carmona, A.; Santiago, J. Tau custodian searches at the LHC. Physics Letters B, 695(5): 449-453 (2011). [http://hdl.handle.net/10481/30719]
Patrocinador
This work has been partially supported by MICINN project FPA2006-05294 and Junta de Andalucía projects FQM 101, FQM 03048. A.C. is partially supported by an FPU fellowship and J.S. by a Ramón y Cajal contract.
Résumé
The tau lepton can be more composite than naively expected in models of strong electroweak symmetry breaking with tri-bimaximal lepton mixing. New leptonic resonances required by custodial symmetry, the tau custodians, can then be the first signal of this lepton flavor realization. Tau custodians can be very light, decaying almost exclusively into taus. The LHC reach for these new leptons is up to masses of 240, 480 and 720 GeV for sqrt{s}=14 TeV and an integrated luminosity of 30, 300 and 3000 fb^{-1}, respectively. Our analysis can be extended to any pair produced particles decaying mostly into taus and Standard Model bosons.
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