We establish upper limits on branching fractions for B-0 decays to final states where the decay products are purely invisible (i.e., no observable final state particles) and for B-0 decays to v(v) over bar γ. Within the standard model, these decays have branching fractions that are below current experimental sensitivity, but various models of physics beyond the standard model predict significant contributions from these channels. Using 88.5x10(6) B(B) over bar pairs collected at the Y(4S) resonance by the BABAR experiment at the PEP-II e(+)e(-) storage ring at the Stanford Linear Accelerator Center, we establish upper limits at the 90% confidence level of 22x10(-5) for the branching fraction of B-0-->invisible and 4.7x10(-5) for the branching fraction of B-0-->v(v) over bar γ.

Search for B-0 decays to invisible final states and to nu(nu)over-bar gamma

BIANCHI, Fabrizio;GAMBA, Diego;
2004-01-01

Abstract

We establish upper limits on branching fractions for B-0 decays to final states where the decay products are purely invisible (i.e., no observable final state particles) and for B-0 decays to v(v) over bar γ. Within the standard model, these decays have branching fractions that are below current experimental sensitivity, but various models of physics beyond the standard model predict significant contributions from these channels. Using 88.5x10(6) B(B) over bar pairs collected at the Y(4S) resonance by the BABAR experiment at the PEP-II e(+)e(-) storage ring at the Stanford Linear Accelerator Center, we establish upper limits at the 90% confidence level of 22x10(-5) for the branching fraction of B-0-->invisible and 4.7x10(-5) for the branching fraction of B-0-->v(v) over bar γ.
2004
93
091802
-
B. Aubert; R. Barate; D. Boutigny; F. Couderc; J. M. Gaillard; A. Hicheur; Y. Karyotakis; J. P. Lees; V. Tisserand; A. Zghiche; A. Palano; A. Pompili;...espandi
File in questo prodotto:
Non ci sono file associati a questo prodotto.

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/2318/48747
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 230
social impact