Search for the invisible decay of J/psi in psi(2S) --> pi(+)pi(-) J/psi.
Phys Rev Lett
; 100(19): 192001, 2008 May 16.
Article
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| MEDLINE
| ID: mdl-18518438
ABSTRACT
Using psi(2S) --> pi(+)pi(-) J/psi events in a sample of 14.0 x 10(6) psi(2S) decays collected with the BES-II detector, a search for the decay of the J/psi to invisible final states is performed. No signal is found, and an upper limit at the 90% confidence level is determined to be 1.2 x 10(-2) for the ratio B(J/psi --> invisible)/B(J/psi-->mu(+)mu(-)). This is the first search for J/psi decays to invisible final states.
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01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Año:
2008
Tipo del documento:
Article