ISSN:
1434-6052
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We report a study of the decay τ−→τ−τ+τ− v τ using the ARGUS detector at the DORIS II storage ring. Tau pairs were produced bye + e − annihilation at centre-of-mass energies near 10 GeV. We have observed about 1,700 events, corresponding to a branching ratio for τ−→τ−τ+τ− v τ of (5.6±0.7)%. The dominant mode for this decay is observed to beρ 0π− in aJ p =1+ spin state. Theρ 0π− mass spectrum shows a broad enhancement near 1.10 GeV/c2, which has the properties expected for theA 1.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01410447
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