We present a measurement of RB, the ratio of the branching fraction for the rare decay D(0)-> K(+)pi(-) to that for the Cabibbo-favored decay D(0)-> K(-)pi(+). Charge-conjugate decays are implicitly included. A signal of 2005 +/- 104 events for the decay D(0)-> K(+)pi(-) is obtained using the CDF II detector at the Fermilab Tevatron collider. The data set corresponds to an integrated luminosity of 0.35 fb(-1) produced in (p) over barp collisions at root s>=1.96 TeV. Assuming no mixing, we find R(E)=[4.05 +/- 0.21(stat)+/- 0.11(syst)]x10(-3). This measurement is consistent with the world average, and comparable in accuracy with the best measurements from other experiments.

A., A., D., A., J., A., T., A., T., A., M. G., A., et al. (2006). Measurement of the ratio of branching fractions B(D(0)-> K(+)pi(-))/B(D(0)-> K(-)pi(+)) using the CDF II detector. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 74(3) [10.1103/PhysRevD.74.031109].

Measurement of the ratio of branching fractions B(D(0)-> K(+)pi(-))/B(D(0)-> K(-)pi(+)) using the CDF II detector

PAOLETTI, RICCARDO;
2006-01-01

Abstract

We present a measurement of RB, the ratio of the branching fraction for the rare decay D(0)-> K(+)pi(-) to that for the Cabibbo-favored decay D(0)-> K(-)pi(+). Charge-conjugate decays are implicitly included. A signal of 2005 +/- 104 events for the decay D(0)-> K(+)pi(-) is obtained using the CDF II detector at the Fermilab Tevatron collider. The data set corresponds to an integrated luminosity of 0.35 fb(-1) produced in (p) over barp collisions at root s>=1.96 TeV. Assuming no mixing, we find R(E)=[4.05 +/- 0.21(stat)+/- 0.11(syst)]x10(-3). This measurement is consistent with the world average, and comparable in accuracy with the best measurements from other experiments.
2006
A., A., D., A., J., A., T., A., T., A., M. G., A., et al. (2006). Measurement of the ratio of branching fractions B(D(0)-> K(+)pi(-))/B(D(0)-> K(-)pi(+)) using the CDF II detector. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 74(3) [10.1103/PhysRevD.74.031109].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/39332
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