Decay phi->pi+pi-

Preprint

21 January 2000

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ex/0001048

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.

Keywords

PRODUCTION AMPLITUDE
BRANCHING RATIO
PI PRODUCTION
PHASE PSI_PI
SND DETECTOR
DECAY PHI
VEPP 2M
PHI

All Related Versions

Version 1, 2000-01-21, ArXiv
Published version: Physics Letters B, 474 (1-2), 188.

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