Measurement of the ratio of branching fractions B(D0→K+π-)/ B(D0→K-π+) using the CDF II detector

Journal article

We present a measurement of RB, the ratio of the branching fraction for the rare decay D0→K+π- to that for the Cabibbo-favored decay D0→K-π+. Charge-conjugate decays are implicitly included. A signal of 2005±104 events for the decay D0→K+π- is obtained using the CDF II detector at the Fermilab Tevatron collider. The data set corresponds to an integrated luminosity of 0.35fb-1 produced in p̄p collisions at s=1.96TeV. Assuming no mixing, we find RB=[4.05±0.21(stat)±0.11(syst)] ×10-3. This measurement is consistent with the world average, and comparable in accuracy with the best measurements from other experiments. © 2006 The American Physical Society.

Authors: Abulencia, A; Acosta, D; Adelman, J; Affolder, T; Akimoto, T

• Journal: Physical Review D
• Volume: 74
• Issue: 3
• Publication date: 2006-01-01
• DOI: 10.1103/PhysRevD.74.031109
• EISSN: 1550-2368
• ISSN: 1550-7998
• Language: English