We report the first reconstruction in hadron collisions of the suppressed decays B- -> D(-> K+ pi(-))K(-) and B- -> D(-> K+ pi(-))pi(-), sensitive to the Cabibbo-Kobayashi-Maskawa phase gamma, using data from 7 fb(-1) of integrated luminosity collected by the CDF II detector at the Tevatron collider. We reconstruct a signal for the B- -> D(-> K+ pi(-))K- suppressed mode with a significance of 3.2 standard deviations, and measure the ratios of the suppressed to favored branching fractions R(K) = [22.0 +/- 8.6(stat) +/- 2.6(syst)] x 10(-3), R+(K) = [42.6 +/- 13.7(stat)] +/- 2.8(syst)] x 10(-3), R-(K) = [3.8 +/- 10.3(stat) +/- 2.7(syst)] x 10(-3) as well as the direct CP-violating asymmetry A(K) = -0.82 +/- 0,44(stat) +/- 0.09(syst) of this mode. Corresponding quantities for B- -> D(-> K+ pi(-))pi(-) decay are also reported.

T., A., B., Á.G., S., A., D., A., A., A., A., A., et al. (2011). Measurements of branching fraction ratios and CP-asymmetries in suppressed B- -> D(-> K+ pi(-))K- and B- -> D(-> K+ pi(-))pi(-) decays. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 84(9), 091504-1-091504-8 [10.1103/PhysRevD.84.091504].

Measurements of branching fraction ratios and CP-asymmetries in suppressed B- -> D(-> K+ pi(-))K- and B- -> D(-> K+ pi(-))pi(-) decays

BARRIA, PATRIZIA;GAROSI, PAOLA;RUFFINI, FABRIZIO;SCRIBANO, ANGELO;SQUILLACIOTI, PAOLA;
2011-01-01

Abstract

We report the first reconstruction in hadron collisions of the suppressed decays B- -> D(-> K+ pi(-))K(-) and B- -> D(-> K+ pi(-))pi(-), sensitive to the Cabibbo-Kobayashi-Maskawa phase gamma, using data from 7 fb(-1) of integrated luminosity collected by the CDF II detector at the Tevatron collider. We reconstruct a signal for the B- -> D(-> K+ pi(-))K- suppressed mode with a significance of 3.2 standard deviations, and measure the ratios of the suppressed to favored branching fractions R(K) = [22.0 +/- 8.6(stat) +/- 2.6(syst)] x 10(-3), R+(K) = [42.6 +/- 13.7(stat)] +/- 2.8(syst)] x 10(-3), R-(K) = [3.8 +/- 10.3(stat) +/- 2.7(syst)] x 10(-3) as well as the direct CP-violating asymmetry A(K) = -0.82 +/- 0,44(stat) +/- 0.09(syst) of this mode. Corresponding quantities for B- -> D(-> K+ pi(-))pi(-) decay are also reported.
2011
T., A., B., Á.G., S., A., D., A., A., A., A., A., et al. (2011). Measurements of branching fraction ratios and CP-asymmetries in suppressed B- -> D(-> K+ pi(-))K- and B- -> D(-> K+ pi(-))pi(-) decays. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 84(9), 091504-1-091504-8 [10.1103/PhysRevD.84.091504].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS 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/11365/41213
 Attenzione

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