We present evidence for the b -> d penguin-dominated decays B+->(K) over bar K-0(+) and B-0-> K-0(K) over bar (0) in 227x10(6) Upsilon(4S)-> B (B) over bar decays collected with the BABAR detector. We measure the branching fractions B(B+->(K) over bar K-0(+))=(1.5 +/- 0.5 +/- 0.1)x10(-6)(< 2.4x10(-6)) and B(B-0-> K-0(K) over bar (0))=(1.19(-0.35)(+0.40)+/- 0.13)x10(-6), where the uncertainties are statistical and systematic, respectively. We also present improved measurements of the charge-averaged branching fraction B(B+-> K(0)pi(+))=(26.0 +/- 1.3 +/- 1.0)x10(-6) and CP-violating charge asymmetry A(CP)(K(0)pi(+))=-0.09 +/- 0.05 +/- 0.01, where the uncertainties are statistical and systematic, respectively.

Evidence for B+->(K)over-bar(0)K(+) and B-0 -> K-0(K)over-bar(0), and measurement of the branching fraction and search for direct CP violation in B+-> K-0 pi(+)

ANDREOTTI, Mirco;AZZOLINI, Virginia;CALABRESE, Roberto;CIBINETTO, Gianluigi;LUPPI, Eleonora;NEGRINI, Matteo;
2005

Abstract

We present evidence for the b -> d penguin-dominated decays B+->(K) over bar K-0(+) and B-0-> K-0(K) over bar (0) in 227x10(6) Upsilon(4S)-> B (B) over bar decays collected with the BABAR detector. We measure the branching fractions B(B+->(K) over bar K-0(+))=(1.5 +/- 0.5 +/- 0.1)x10(-6)(< 2.4x10(-6)) and B(B-0-> K-0(K) over bar (0))=(1.19(-0.35)(+0.40)+/- 0.13)x10(-6), where the uncertainties are statistical and systematic, respectively. We also present improved measurements of the charge-averaged branching fraction B(B+-> K(0)pi(+))=(26.0 +/- 1.3 +/- 1.0)x10(-6) and CP-violating charge asymmetry A(CP)(K(0)pi(+))=-0.09 +/- 0.05 +/- 0.01, where the uncertainties are statistical and systematic, respectively.
2005
Aubert, B; Barate, R; Boutigny, D; Couderc, F; Karyotakis, Y; Lees, Jp; Poireau, V; Tisserand, V; Zghiche, A; Grauges, E; Palano, A; Pappagallo, M; Po...espandi
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in SFERA 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/11392/1211423
 Attenzione

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

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 13
  • ???jsp.display-item.citation.isi??? 8
social impact