ISSN:
1434-6052
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We have studied the τ→νρ 0 π decay in data taken with the PLUTO detector at the DORISe + e − storage ring, at CM energies from 4 to 5 GeV. We have found 27 events with the τ→νρ 0 π decay mode corresponding to a branching ratio ofB=(5.4±1.7)%. The Dalitz plot and theρ 0 π mass spectrum are analysed for the ρπ partial wave and spin state. Only theρ 0 π s-wave as produced by the axial vector current gives a good description. Theρ 0 π mass spectrum is suggestive of anA 1 resonance. An upper limit on τ±→vπ ± π + π − withoutρ 0 formation is given.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01577418