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 99×106Υ(2S) decays and 117×106Υ(3S) decays collected with the BABAR detector. We place upper limits on the branching fractions ℬ(Υ(nS)→e±τ∓) and ℬ(Υ(nS)→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.

Lees, J.p., Poireau, V., Prencipe, E., Tisserand, V., Tico, J.g., Grauges, E., et al. (2010). Search for Charged Lepton Flavor Violation in Narrow Y Decays. PHYSICAL REVIEW LETTERS, 104(15), 1-7 [10.1103/PhysRevLett.104.151802].

Search for Charged Lepton Flavor Violation in Narrow Y Decays

PATRIGNANI, CLAUDIA;
2010

Abstract

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 99×106Υ(2S) decays and 117×106Υ(3S) decays collected with the BABAR detector. We place upper limits on the branching fractions ℬ(Υ(nS)→e±τ∓) and ℬ(Υ(nS)→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.
2010
Lees, J.p., Poireau, V., Prencipe, E., Tisserand, V., Tico, J.g., Grauges, E., et al. (2010). Search for Charged Lepton Flavor Violation in Narrow Y Decays. PHYSICAL REVIEW LETTERS, 104(15), 1-7 [10.1103/PhysRevLett.104.151802].
Lees, Jp; Poireau, V; Prencipe, E; Tisserand, V; Tico, Jg; Grauges, E; Martinelli, M; Palano, A; Pappagallo, M; Eigen, G; Stugu, B; Sun, L; Battaglia,...espandi
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/543546
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 31
  • ???jsp.display-item.citation.isi??? 20
social impact