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Search for CP violation in the decay tau(-) -> pi K--(s)0 (>= 0 pi(0))v(tau)
Journal article   Open access

Search for CP violation in the decay tau(-) -> pi K--(s)0 (>= 0 pi(0))v(tau)

J. P. Lees, V. Poireau, V. Tisserand, J. Garra Tico, E. Grauges, M. Martinelli, D. A. Milanes, A. Palano, M. Pappagallo, G. Eigen, …
Physical review. D, Particles, fields, gravitation, and cosmology, Vol.85(3)
13/02/2012

Abstract

Astronomy & Astrophysics Physical Sciences Physics Physics, Particles & Fields Science & Technology
We report a search for CP violation in the decay tau(-) -> pi K--(s)0 (>= 0 pi(0))v(tau) using a data set of 437 x 10(6) tau-lepton pairs, corresponding to an integrated luminosity of 476 fb(-1), collected with the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) storage rings. The CP-violating decay-rate asymmetry is determined to be (-0.36 +/- 0.23 +/- 0.11)% approximately 2.8 standard deviations from the standard model prediction of (0.36 +/- 0.01)%.
url
https://doi.org/10.1103/PhysRevD.85.031102View
Published (Version of record) Open

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