We present a measurement of R(B), 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 (p) over bar collisions at root s=1.96 TeV. Assuming no mixing, we find R(B) = (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.

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

CIOCCI, MARIA AGNESE;DONATI, SIMONE;G. Punzi;
2006-01-01

Abstract

We present a measurement of R(B), 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 (p) over bar collisions at root s=1.96 TeV. Assuming no mixing, we find R(B) = (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
Abulencia, A.; Acosta, D.; Adelman, J.; Affolder, T.; Akimoto, T.; Albrow, M. G.; Ambrose, D.; Amerio, S.; Amidei, D.; Anastassov, A.; Anikeev, K.; An...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/828912
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