Department
Physics
Document Type
Article
Publication Date
1-2018
Embargo Period
7-3-2018
Abstract
We present the measurement of the absolute branching fractions of B+→Xc¯cK+ and B+→¯D(*)0π+decays, using a data sample of 772×106 B¯B pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. Here, Xc¯c denotes ηc, J/ψ, χc0, χc1, ηc(2S), ψ(2S), ψ(3770), X(3872), and X(3915). We do not observe significant signals for X(3872) or X(3915) and set the 90% confidence level upper limits at B(B+→X(3872)K+)<2.6×10−4 and B(B+→X(3915)K+)<2.8×10−4. These represent the most stringent upper limit for B(B+→X(3872)K+) to date and the first limit for B(B+→X(3915)K+). The measured branching fractions for ηc and ηc(2S) are the most precise to date, B(B+→ηcK+)=(12.0±0.8±0.7)×10−4and B(B+→ηc(2S)K+)=(4.8±1.1±0.3)×10−4, where the first and second uncertainties are statistical and systematic, respectively.
Journal Title
Physical Review D
Journal ISSN
2470-0010
Volume
97
Issue
1
Digital Object Identifier (DOI)
10.1103/PhysRevD.97.012005
Comments
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.