We search for B-→D0K- and B-→D*0K- and charge conjugates. Here the symbol D0 indicates decay of a D0 or D̄0 into K+π-, while the symbol D*0 indicates decay of a D*0 or D̄*0 to D0π0 or D0γ. These final states can be reached through the b→c transition B-→D(*)0K- followed by the doubly Cabibbo-Kobayashi-Maskawa (CKM)-suppressed D0→K+π-, or the b→u transition B-→D̄(*)0K- followed by the CKM-favored D̄0→K+π-. The interference of these two amplitudes is sensitive to the angle γ of the unitarity triangle. Our results are based on 232×106 Υ(4S)→BB̄ decays collected with the BABAR detector at SLAC. We find no significant evidence for these decays. We set a limit rB|A(B-→D̄0K-)/A(B-→D0K-)|<0.23 at 90% C.L. using the most conservative assumptions on the values of the CKM angle γ and the strong phases in the B and D decay amplitudes. In the case of the D* we set a 90% C.L. limit rB*2|A(B-→D̄*0K-)/A(B-→D*0K-) |2<(0.16)2 which is independent of assumptions on γ and strong phases. © 2005 The American Physical Society.

Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J., et al. (2005). Search for b→u transitions in B-→D0K- and B-→D*0K-. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 72(3), 1-14 [10.1103/PhysRevD.72.032004].

Search for b→u transitions in B-→D0K- and B-→D*0K-

PATRIGNANI, CLAUDIA;
2005

Abstract

We search for B-→D0K- and B-→D*0K- and charge conjugates. Here the symbol D0 indicates decay of a D0 or D̄0 into K+π-, while the symbol D*0 indicates decay of a D*0 or D̄*0 to D0π0 or D0γ. These final states can be reached through the b→c transition B-→D(*)0K- followed by the doubly Cabibbo-Kobayashi-Maskawa (CKM)-suppressed D0→K+π-, or the b→u transition B-→D̄(*)0K- followed by the CKM-favored D̄0→K+π-. The interference of these two amplitudes is sensitive to the angle γ of the unitarity triangle. Our results are based on 232×106 Υ(4S)→BB̄ decays collected with the BABAR detector at SLAC. We find no significant evidence for these decays. We set a limit rB|A(B-→D̄0K-)/A(B-→D0K-)|<0.23 at 90% C.L. using the most conservative assumptions on the values of the CKM angle γ and the strong phases in the B and D decay amplitudes. In the case of the D* we set a 90% C.L. limit rB*2|A(B-→D̄*0K-)/A(B-→D*0K-) |2<(0.16)2 which is independent of assumptions on γ and strong phases. © 2005 The American Physical Society.
2005
Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J., et al. (2005). Search for b→u transitions in B-→D0K- and B-→D*0K-. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 72(3), 1-14 [10.1103/PhysRevD.72.032004].
Aubert, B.; Barate, R.; Boutigny, D.; Couderc, F.; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Tisserand, V.; Zghiche, A.; Grauges, E.; Palano, A.; Pappa...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/551725
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