Measurement of the absolute branching fractions for D-s(-) -> l(-) (nu)over-bar(l) and extraction of the decay constant f(Ds)
(2010) Measurement of the absolute branching fractions for D-s(-) -> l(-) (nu)over-bar(l) and extraction of the decay constant f(Ds). Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol.82 (No.9). article no. 091103(R) . ISSN 1550-7998 Full text not available from this repository.
Official URL: http://dx.doi.org/10.1103/PhysRevD.82.091103
The absolute branching fractions for the decays D-s(-) -> l(-) (nu) over bar (l) (l = e, mu, or tau) are measured using a data sample corresponding to an integrated luminosity of 521 fb(-1) collected at center-of-mass energies near 10.58 GeV with the BABAR detector at the PEP-II e(+)e(-) collider at SLAC. The number of D-s(-) mesons is determined by reconstructing the recoiling system DKX gamma in events of the type e(+)e(-) -> DKXDs*(-), where D-s*(-) -> D-s(-) gamma and X represents additional pions from fragmentation. The D-s(-) -> l(-) nu(l) events are detected by full or partial reconstruction of the recoiling system DKX gamma l. The branching fraction measurements are combined to determine the D-s(-) decay constant f(Ds) (258.6 +/- 6.4 +/- 7:5) MeV, where the first uncertainty is statistical and the second is systematic.
|Item Type:||Journal Article|
|Subjects:||Q Science > QB Astronomy
Q Science > QC Physics
|Divisions:||Faculty of Science > Physics|
|Journal or Publication Title:||Physical Review D (Particles, Fields, Gravitation and Cosmology)|
|Publisher:||American Physical Society|
|Official Date:||10 November 2010|
|Number of Pages:||8|
|Page Range:||article no. 091103(R)|
|Funder:||SLAC, DOE, NSF (USA), NSERC (Canada), CEA, CNRS (France), BMBF, DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MES (Russia), MICIIN (Spain), STFC (United Kingdom), Marie Curie EIF (European Union), A. P. Sloan Foundation (USA), Binational Science Foundation (USA-Israel)|
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