Decay phi->pi+pi-

Abstract

The process e+e- ->pi+pi- has been studied with the SND detector at VEPP-2M e+e- collider in the vicinity of phi(1020) resonance. From the analysis of the energy dependence of measured cross section the branching ratio B(phi->pi+pi-)=(7.1+-1.1+-0.9)*10^{-5} and the phase psi_pi=-(34+-4+-3)degrees of interference with the non-resonant pi+pi- production amplitude were obtained.

6 pages, 5 figures, to be published in Physics Letters B

References in corpus (2)

• First observation of the $\varphi \to {\pi }^{+}{\pi }^{-}\gamma$ decay
• Measurement of the decay phi->mu+mu-

Cited by in corpus (12)

• The hadronic contributions to the anomalous magnetic moment of the muon
• An Update of the HLS Estimate of the Muon g-2
• Precision Determination of the Pion Form Factor and Calculation of the Muon $g-2$
• Measurement of the $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}$ cross section from threshold to 1.2 GeV with the CMD-3 detector
• Upgraded Breaking Of The HLS Model: A Full Solution to the tau-e+e- and phi Decay Issues And Its Consequences On g-2 VMD Estimates
• The Dipion Mass Spectrum In e+e- Annihilation and tau Decay: A Dynamical (rho0, omega, phi) Mixing Approach
• Observation of the phi to pi+pi-pi+pi- Decay
• The ratio Phi->K+K-/K0K0bar
• Calculation of ${\bar{\alpha }}_{Q.E.D.}$ on the Z
• BHLS${}_2$ Upgrade : $\tau$ spectra, muon HVP and the [${\pi }^0,\eta ,{\eta }^{\prime }$] System
• Direct measurement of the phi(1020) leptonic branching ratio
• CMD-2 and SND results on the rho, omega and phi