First observations of the Cabibbo-suppressed decays B(0) D(+)K(-)pi(+)pi(-) and B(-) D(0)K(-)pi(+)pi(-) are reported using 35 pb(-1) of data collected with the LHCb detector. Their branching fractions are measured with respect to the corresponding Cabibbo-favored decays, from which we obtain B(B(0) D(+)K(-)pi(+)pi(-))/B(B(0) D(+)pi(-)pi(+)pi(-))=(5.9±1.1±0.5)*10(-2) and B(B(-) D(0)K(-)pi(+)pi(-))/B(B(-) D(0)pi(-)pi(+)pi(-))=(9.4±1.3±0.9)*10(-2), where the uncertainties are statistical and systematic, respectively. The B(-) D(0)K(-)pi(+)pi(-) decay is particularly interesting, as it can be used in a similar way to B(-) D(0)K(-) to measure the Cabibbo-Kobayashi-Maskawa phase gamma.

Aaij, R., Carboni, G., Messi, R., Santovetti, E., Ii, (2012). First observation of the decays B(0) D(+)K(-)pi(+)pi(-) and B(-) D(0)K(-)pi(+)pi(-). PHYSICAL REVIEW LETTERS, 108(16), 161801-161801.

First observation of the decays B(0) D(+)K(-)pi(+)pi(-) and B(-) D(0)K(-)pi(+)pi(-)

CARBONI, GIOVANNI;MESSI, ROBERTO;SANTOVETTI, EMANUELE;
2012

Abstract

First observations of the Cabibbo-suppressed decays B(0) D(+)K(-)pi(+)pi(-) and B(-) D(0)K(-)pi(+)pi(-) are reported using 35 pb(-1) of data collected with the LHCb detector. Their branching fractions are measured with respect to the corresponding Cabibbo-favored decays, from which we obtain B(B(0) D(+)K(-)pi(+)pi(-))/B(B(0) D(+)pi(-)pi(+)pi(-))=(5.9±1.1±0.5)*10(-2) and B(B(-) D(0)K(-)pi(+)pi(-))/B(B(-) D(0)pi(-)pi(+)pi(-))=(9.4±1.3±0.9)*10(-2), where the uncertainties are statistical and systematic, respectively. The B(-) D(0)K(-)pi(+)pi(-) decay is particularly interesting, as it can be used in a similar way to B(-) D(0)K(-) to measure the Cabibbo-Kobayashi-Maskawa phase gamma.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/04 - Fisica Nucleare e Subnucleare
English
Aaij, R., Carboni, G., Messi, R., Santovetti, E., Ii, (2012). First observation of the decays B(0) D(+)K(-)pi(+)pi(-) and B(-) D(0)K(-)pi(+)pi(-). PHYSICAL REVIEW LETTERS, 108(16), 161801-161801.
Aaij, R; Carboni, G; Messi, R; Santovetti, E; Ii,
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/135362
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