Evidence for the leptonic decay D --> mu nu(mu) - INSPIRE

DataBETA

Evidence for the leptonic decay D --> mu nu(mu)

BES

Collaboration

1998

7 pages

Published in:

Phys.Lett.B 429 (1998) 188-194

DOI:

10.1016/S0370-2693(98)00313-X

PDG:

{{\mathit D}^{+}}

\rightarrow

{{\mathit \mu}^{+}}{{\mathit \nu}_{{{\mu}}}}

Report number:

SLAC-REPRINT-1998-077

View in:

OSTI Information Bridge Server

reference search34 citations

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Abstract: (Elsevier)

Purely leptonic decays of the charged D meson have been studied using the reaction e + e − →D ∗+ D − at a center of mass energy of 4.03 GeV. A search was performed for D → μν μ recoiling against a D 0 or D + which had been reconstructed from its hadronic decay products. A single event candidate was found in the reaction e + e − →D ∗+ D − , where D ∗+ →π + D 0 with the D 0 → K − π + , and the recoiling D − decaying via D − →μ − ν ̄ μ . This yields a branching fraction value B ( D → μν μ )=0.08 −0.05−0.02 +0.16+0.05 %, and a corresponding value of the pseudoscalar decay constant f D =300 −150−40 +180+80 MeV.

electron positron: colliding beams
electron positron: annihilation
charmed meson: pair production
D: leptonic decay
D: branching ratio
D: decay constant
BES
experimental results
Beijing Stor
electron positron --> D*(2010) D-

References(14)

Figures(0)

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