Using a sample of 232x10(6) Upsilon(4S)-> B (B) over bar events collected with the BABAR detector at the PEP-II B Factory in 1999-2004, we study B--> (DK*)-K-0(892)(-) decays where K*--> K(S)(0)pi(-) and D-0-> K(-)pi(+), K(-)pi(+)pi(0), K(-)pi(+)pi(+)pi(-) (non-CP final states); K+K-, pi(+)pi(-) (CP+ eigenstates); K(S)(0)pi(0), K(S)(0)phi, and K(S)(0)omega (CP- eigenstates). We measure four observables that are sensitive to the angle gamma of the CKM unitarity triangle; the partial-rate charge asymmetries A(CP +/-) and the ratios of the B-decay branching fraction in CP +/- and non-CP decays RCP +/-: A(CP+)=-0.08 +/- 0.19(stat)+/- 0.08(syst), A(CP-)=-0.26 +/- 0.40(stat)+/- 0.12(syst), RCP+=1.96 +/- 0.40(stat)+/- 0.11(syst), and RCP-=0.65 +/- 0.26(stat)+/- 0.08(syst).

Measurement of CP observables for the decays B-+/-->(DCPK)-K-0*(+/-)

BIANCHI, Fabrizio;GAMBA, Diego;
2005-01-01

Abstract

Using a sample of 232x10(6) Upsilon(4S)-> B (B) over bar events collected with the BABAR detector at the PEP-II B Factory in 1999-2004, we study B--> (DK*)-K-0(892)(-) decays where K*--> K(S)(0)pi(-) and D-0-> K(-)pi(+), K(-)pi(+)pi(0), K(-)pi(+)pi(+)pi(-) (non-CP final states); K+K-, pi(+)pi(-) (CP+ eigenstates); K(S)(0)pi(0), K(S)(0)phi, and K(S)(0)omega (CP- eigenstates). We measure four observables that are sensitive to the angle gamma of the CKM unitarity triangle; the partial-rate charge asymmetries A(CP +/-) and the ratios of the B-decay branching fraction in CP +/- and non-CP decays RCP +/-: A(CP+)=-0.08 +/- 0.19(stat)+/- 0.08(syst), A(CP-)=-0.26 +/- 0.40(stat)+/- 0.12(syst), RCP+=1.96 +/- 0.40(stat)+/- 0.11(syst), and RCP-=0.65 +/- 0.26(stat)+/- 0.08(syst).
2005
72
071103
-
B. Aubert; R. Barate; D. Boutigny; F. Couderc; Y. Karyotakis; J. P. Lees; V. Poireau; V. Tisserand; A. Zghiche; E. Grauges; A. Palano; M. Pappagallo; ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/49355
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