Improved measurement of the absolute branching fraction of D+ -> (K)over-bar(0)mu(+)nu(mu)

Kolcu, Onur Buğra

Advanced Search

View/Open

Tam Metin / Full Text (1.156Mb)

Access

info:eu-repo/semantics/openAccessAttribution 3.0 United Stateshttp://creativecommons.org/licenses/by/3.0/us/

Date

2016

Author

Kolcu, Onur Buğra

Metadata

Show full item record

Citation

Ablikim, M., Achasov, M. N., Ai, X. C., Albayrak, O., Albrecht, M., Ambrose, D. J., . . . Collaboration, B. (2016). Improved measurement of the absolute branching fraction of D+ -> (K)over-bar(0)mu(+)nu(mu). European Physical Journal C, 76(7), 10. doi:10.1140/epjc/s10052-016-4198-2

Abstract

By analyzing 2.93 fb(-1) of data collected at root s = 3.773 GeV with the BESIII detector, we measure the absolute branching fraction B(D+ -> (K) over bar (0) (+)(mu)nu(mu)) = (8.72 +/- 0.07(stat). +/- 0.18(sys).) %, which is consistent with previous measurements within uncertainties but with significantly improved precision. Combining the Particle Data Group values of B(D-0 -> K- mu(+)nu(mu)), B(D+-> (K) over bar (0)e(+)nu(e)), and the lifetimes of the D-0 and D+ mesons with the value of B(D+ -> (K) over bar (0)mu(+)nu(mu)) measured in this work, we determine the following ratios of partial widths: Gamma (D-0 -> (K) over bar (-)mu(+)nu(mu))/Gamma (D+ -> (K) over bar (0)mu+nu(mu)) = 0.963 +/- 0.044 and Gamma (D+ -> (K) over bar (0) mu+nu(mu))/Gamma(D+ -> (K) over bar (0)e+nu(e)) = 0.988 +/- 0.033.