Measurement of the decay phi->mu+mu-

Abstract

The process e^+e^- ->mu^+mu^- has been studied with SND detector at VEPP-2M e^+e^- collider in the vicinity of phi(1020) resonance. The product of branching ratios of phi meson into leptons \sqrt{B(phi->mu^+mu^-) B(phi-> e^+e^-)}=(3.14+-0.22+-0.14)x10^{-4} was measured from the interference in the cross section of the process e^+e^- ->mu^+mu^-. The branching ratio B(phi->mu^+mu^-)=(3.30+-0.45+-0.32)x10^{-4} was obtained.

arXiv comment6 pages, 5 figures, to be published in Physics Letters B

References in corpus (2)

• Large angle QED processes at e^+e^- colliders at energies below 3 GeV
• Isobar Electroproduction as a Background from Interaction of Beams with Residual Gas at $\varphi$-Factories

Cited by in corpus (8)

• Glueballs, Hybrids, Multiquarks. Experimental facts versus QCD inspired concepts
• Flavor Physics in the Quark Sector
• Study of the process $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{\pi }^0$ in the energy region $\sqrt[]{s}$ below 0.98 GeV
• Measurements of the branching fractions of the decays $B_s^0\to D_s^{\mp }{K}^{\pm }$ and $B_s^0\to D_s^{-}{\pi }^{+}$
• Decay phi->pi+pi-
• Direct measurement of the phi(1020) leptonic branching ratio
• New experimental data for the decays $\varphi \to {\mu }^{+}{\mu }^{-}$ and $\varphi \to {\pi }^{+}{\pi }^{-}$ from SND detector
• Study of the process e+e-\to μ+μ- in the energy region \sqrt{s}=980, 1040 -- 1380 MeV