We report the observation of the decay B--> D(pi)(+)pi(-)pi(0)K(-), where D(pi)(+)pi(-)pi(0) indicates a neutral D meson detected in the final state pi(+)pi(-)pi(0), excluding K(S)(0)pi(0). This doubly Cabibbo-suppressed decay chain can be used to measure the CKM phase gamma. Using about 229x10(6) e(+)e(-)-> B (B) over bar events recorded by the BABAR experiment at the PEP-II e(+)e(-) storage ring, we measure the branching fraction B(B--> D(pi)(+)pi(-)pi(0)K(-))=(5.5 +/- 1.0(stat.)+/- 0.7(syst.))x10(-6) and the decay rate asymmetry A(B--> D(pi)(+)pi(-)pi(0)K(-))=-0.02 +/- 0.16(stat.)+/- 0.03(syst.) for the full decay chain.

Measurement of the branching fraction and decay rate asymmetry of B--> D-pi(+)pi(-)pi K-0(-)

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

Abstract

We report the observation of the decay B--> D(pi)(+)pi(-)pi(0)K(-), where D(pi)(+)pi(-)pi(0) indicates a neutral D meson detected in the final state pi(+)pi(-)pi(0), excluding K(S)(0)pi(0). This doubly Cabibbo-suppressed decay chain can be used to measure the CKM phase gamma. Using about 229x10(6) e(+)e(-)-> B (B) over bar events recorded by the BABAR experiment at the PEP-II e(+)e(-) storage ring, we measure the branching fraction B(B--> D(pi)(+)pi(-)pi(0)K(-))=(5.5 +/- 1.0(stat.)+/- 0.7(syst.))x10(-6) and the decay rate asymmetry A(B--> D(pi)(+)pi(-)pi(0)K(-))=-0.02 +/- 0.16(stat.)+/- 0.03(syst.) for the full decay chain.
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/11392/1211425
 Attenzione

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

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 5
  • ???jsp.display-item.citation.isi??? 4
social impact