We search for the rare flavor-changing neutral-current decay B+ → K+ νν̄ in a data sample of 82 fb-1 collected with the BABAR detector at the PEP-II S-factory. Signal events are selected by examining the properties of the system recoiling against either a reconstructed hadronic or semileptonic charged-B decay. Using these two independent samples we obtain a combined limit of ℬ(B+ →K+ νν̄) ≤ 5.2 × 10-5 at the 90% confidence level In addition, by selecting for pions rather than kaons, we obtain a limit of ℬ(B+ → π+ νν̄) < 1.0 × 10-4 using only the hadronic B reconstruction method. © 2005 The American Physical Society.

Aubert, B., Barate, R., Boutigny, D., Couderc, F., Gaillard, J., Hicheur, A., et al. (2005). Search for the decay B+ → K+ νν̄. PHYSICAL REVIEW LETTERS, 94(10), 1-7 [10.1103/PhysRevLett.94.101801].

Search for the decay B+ → K+ νν̄

PATRIGNANI, CLAUDIA;
2005

Abstract

We search for the rare flavor-changing neutral-current decay B+ → K+ νν̄ in a data sample of 82 fb-1 collected with the BABAR detector at the PEP-II S-factory. Signal events are selected by examining the properties of the system recoiling against either a reconstructed hadronic or semileptonic charged-B decay. Using these two independent samples we obtain a combined limit of ℬ(B+ →K+ νν̄) ≤ 5.2 × 10-5 at the 90% confidence level In addition, by selecting for pions rather than kaons, we obtain a limit of ℬ(B+ → π+ νν̄) < 1.0 × 10-4 using only the hadronic B reconstruction method. © 2005 The American Physical Society.
2005
Aubert, B., Barate, R., Boutigny, D., Couderc, F., Gaillard, J., Hicheur, A., et al. (2005). Search for the decay B+ → K+ νν̄. PHYSICAL REVIEW LETTERS, 94(10), 1-7 [10.1103/PhysRevLett.94.101801].
Aubert, B; Barate, R.; Boutigny, D.; Couderc, F.; Gaillard, J.-M.; Hicheur, A.; Karyotakis, Y.; Lees, J.P.; Tisserand, V.; Zghiche, A.; Palano, A.; Po...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/552915
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