We report a search for CP violation in the decay τ -→π -KS0(0π0)ν τ using a data set of 437×106 τ-lepton pairs, corresponding to an integrated luminosity of 476fb -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)%.
Lees, J., Poireau, V., Tisserand, V., Tico J., G., Grauges, E., Martinelli, M., et al. (2012). Search for CP violation in the decay τ -→π -KS0(0π0)ν τ. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 85(3) [10.1103/PhysRevD.85.031102].
Search for CP violation in the decay τ -→π -KS0(0π0)ν τ
CARPINELLI, MassimoMembro del Collaboration Group
;
2012
Abstract
We report a search for CP violation in the decay τ -→π -KS0(0π0)ν τ using a data set of 437×106 τ-lepton pairs, corresponding to an integrated luminosity of 476fb -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)%.
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