Fitxers
Tipus de document
ArticleVersió
Versió publicadaData de publicació
Tots els drets reservats
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/135278
Search for Charged Lepton Flavor Violation in Narrow Υ Decays
Títol de la revista
Director/Tutor
ISSN de la revista
Títol del volum
Recurs relacionat
Resum
Charged-lepton flavor-violating processes are unobservable in the standard model, but they are predicted to be enhanced in several extensions to the standard model, including supersymmetry and models with leptoquarks or compositeness. We present a search for such processes in a sample of 99 × 10 6 Υ ( 2 S ) decays and 117 × 10 6 Υ ( 3 S ) decays collected with the BABAR detector. We place upper limits on the branching fractions B ( Υ ( n S ) → e ± τ ∓ ) and B ( Υ ( n S ) → μ ± τ ∓ ) ( n = 2 , 3 ) at the 10 − 6 level and use these results to place lower limits of order 1 TeV on the mass scale of charged-lepton flavor-violating effective operators.
Matèries
Matèries (anglès)
Citació
Citació
GARRA TICÓ, Jordi, GRAUGÉS POUS, Eugeni and BABAR Collaboration. Search for Charged Lepton Flavor Violation in Narrow Υ Decays. Physical Review Letters. 2010. Vol. 104, num. 15, pags. 151802. ISSN 0031-9007. [consulted: 14 of August of 2026]. Available at: https://hdl.handle.net/2445/135278