Search for Second-Class Currents in tau- -> omega pi- nu_tau

Details Search for Second-Class Currents in tau- -> omega pi- nu_tau Search for Second-Class Currents in tau- -> omega pi- nu_tau

2008-07-30

arxiv.org/abs/0807.4900v2

Physics

High Energy Physics

High Energy Physics - Experiment

15 pages, 7 postscript figures, submitted to ICHEP2008

Scientific paper

We report on an analysis of $\tau^-$ decaying into $\omega\pi^-\nu_\tau$ with
$\omega\to\pi^+\pi^-\pi^0$ using data containing nearly 320 million tau pairs
collected with the BABAR detector at the PEP-II asymmetric energy $B$-Factory.
We find no evidence for second-class currents and set an upper limit at 0.69%
at a 90% confidence level for the ratio of second- to first-class currents.

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