Sep, 2013
Measurements of branching fractions of leptonic and hadronic D-s(+) meson decays and extraction of the D-s(+) meson decay constant
JOURNAL OF HIGH ENERGY PHYSICS
- Volume
- 2013
- Number
- 9
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1007/JHEP09(2013)139
- Publisher
- SPRINGER
We present measurements of absolute branching fractions of hadronic and leptonic D-s(+) decays to K-K+pi(+), ($) over bar (0) ($) over bar (+), eta pi(+), mu(+)nu(mu) and tau(+)nu(tau) and report a search for the leptonic D-s(+) -> e(+) nu(e) decays. The results are obtained from a data sample of 913 fb(-1) collected at or near the gamma (4S) and gamma (5S) resonances with the Belle detector at the KEKB asymmetric- energy e(+)e(-) collider. The branching fractions of hadronic decays are measured to be
B(D-s(+) -> K-K+pi(+)) = (5.06 +/- 0: 15 +/- 0.21)%,
B(D-s(+) -> ($) over bar (0) ($) over bar (+)) = (2.95 +/- 0.11 +/- 0.09)%,
B(D-s(+) -> eta pi(+)) = (1.82 +/- 0.14 +/- 0.07)%,
where the fi rst and second uncertainties are statistical and systematic, respectively. The branching fractions of leptonic decays are measured to be
B(D-s(+) -> mu(+)nu(mu)) = (0.531 +/- 0.028 +/- 0.020)%,
B(D-s(+) -> tau(+)nu(tau)) = (5.70 +/- 0.21(-0.30)(+0.31))%,
which are combined to determine the D-s(+) meson decay constant
fD(s) = (255.5 +/- 4.2 +/- 5.1) MeV.
We find no significant signal for D-s(+) -> e(+)nu(e) decays and set an upper limit of B(D-s(+) -> e(+)nu(e)) < 1.0(0.83) +/- 10(-4) at 95% (90%) con fi dence level.
B(D-s(+) -> K-K+pi(+)) = (5.06 +/- 0: 15 +/- 0.21)%,
B(D-s(+) -> ($) over bar (0) ($) over bar (+)) = (2.95 +/- 0.11 +/- 0.09)%,
B(D-s(+) -> eta pi(+)) = (1.82 +/- 0.14 +/- 0.07)%,
where the fi rst and second uncertainties are statistical and systematic, respectively. The branching fractions of leptonic decays are measured to be
B(D-s(+) -> mu(+)nu(mu)) = (0.531 +/- 0.028 +/- 0.020)%,
B(D-s(+) -> tau(+)nu(tau)) = (5.70 +/- 0.21(-0.30)(+0.31))%,
which are combined to determine the D-s(+) meson decay constant
fD(s) = (255.5 +/- 4.2 +/- 5.1) MeV.
We find no significant signal for D-s(+) -> e(+)nu(e) decays and set an upper limit of B(D-s(+) -> e(+)nu(e)) < 1.0(0.83) +/- 10(-4) at 95% (90%) con fi dence level.
- Link information
-
- DOI
- https://doi.org/10.1007/JHEP09(2013)139
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000325024000003&DestApp=WOS_CPL
- URL
- http://www.scopus.com/inward/record.url?eid=2-s2.0-84892402597&partnerID=MN8TOARS
- URL
- http://orcid.org/0000-0002-1018-219X
- ID information
-
- DOI : 10.1007/JHEP09(2013)139
- ISSN : 1029-8479
- ORCID - Put Code : 50303407
- SCOPUS ID : 84892402597
- Web of Science ID : WOS:000325024000003