We present a search for the decays B -> K-*nu(nu)overbar using 454x10(6)B(B)overbar pairs collected at the Upsilon(4S) resonance with the BABAR detector at the SLAC PEP-II B-Factory. We first select an event sample where one B is reconstructed in a semileptonic or hadronic mode with one charmed meson. The remaining particles in the event are then examined to search for a B -> K-*nu(nu)overbar decay. The charged K-* is reconstructed as K*+-> K-S(0)pi(+) or K*+-> K+pi(0); the neutral K-* is identified in K-*0 -> K+pi(-) mode. We establish upper limits at 90% confidence level of B(B+-> K*+nu(nu)overbar>)< 8x10(-5), B(B-0 -> K-*0 nu(nu)overbar)< 12x10(-5), and B(B -> K-*nu(nu)overbar)< 8x10(-5).

Search for B -> K-*nu(nu)overbar decays

ANDREOTTI, Mirco;CALABRESE, Roberto;CECCHI, Annalisa;CIBINETTO, Gianluigi;FRANCHINI, Paolo;LUPPI, Eleonora;NEGRINI, Matteo;PETRELLA, Antonio;SANTORO, Valentina;
2008

Abstract

We present a search for the decays B -> K-*nu(nu)overbar using 454x10(6)B(B)overbar pairs collected at the Upsilon(4S) resonance with the BABAR detector at the SLAC PEP-II B-Factory. We first select an event sample where one B is reconstructed in a semileptonic or hadronic mode with one charmed meson. The remaining particles in the event are then examined to search for a B -> K-*nu(nu)overbar decay. The charged K-* is reconstructed as K*+-> K-S(0)pi(+) or K*+-> K+pi(0); the neutral K-* is identified in K-*0 -> K+pi(-) mode. We establish upper limits at 90% confidence level of B(B+-> K*+nu(nu)overbar>)< 8x10(-5), B(B-0 -> K-*0 nu(nu)overbar)< 12x10(-5), and B(B -> K-*nu(nu)overbar)< 8x10(-5).
2008
B., Aubert; M., Bona; Y., Karyotakis; J. P., Lees; V., Poireau; E., Prencipe; X., Prudent; V., Tisserand; J. G., Tico; E., Grauges; L., Lopez; A., Pal...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/533218
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