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. 2002 Mar 18;88(11):111803.
doi: 10.1103/PhysRevLett.88.111803. Epub 2002 Feb 28.

Search for CP violation in tau--> K(pi)nu(tau) decays

G Bonvicini  1 , D Cinabro, M Dubrovin, S McGee, A Bornheim, E Lipeles, S P Pappas, A Shapiro, W M Sun, A J Weinstein, G Masek, H P Paar, R Mahapatra, R J Morrison, R A Briere, G P Chen, T Ferguson, G Tatishvili, H Vogel, N E Adam, J P Alexander, C Bebek, K Berkelman, F Blanc, V Boisvert, D G Cassel, P S Drell, J E Duboscq, K M Ecklund, R Ehrlich, L Gibbons, B Gittelman, S W Gray, D L Hartill, B K Heltsley, L Hsu, C D Jones, J Kandaswamy, D L Kreinick, A Magerkurth, H Mahlke-Krüger, T O Meyer, N B Mistry, E Nordberg, M Palmer, J R Patterson, D Peterson, J Pivarski, D Riley, A J Sadoff, H Schwarthoff, M R Shepherd, J G Thayer, D Urner, B Valant-Spaight, G Viehhauser, A Warburton, M Weinberger, S B Athar, P Avery, C Prescott, H Stoeck, J Yelton, G Brandenburg, A Ershov, D Y-J J Kim, R Wilson, K Benslama, B I Eisenstein, J Ernst, G D Gollin, R M Hans, I Karliner, N Lowrey, M A Marsh, C Plager, C Sedlack, M Selen, J J Thaler, J Williams, K W Edwards, R Ammar, D Besson, X Zhao, S Anderson, V V Frolov, Y Kubota, S J Lee, S Z Li, R Poling, A Smith, C J Stepaniak, J Urheim, S Ahmed, M S Alam, L Jian, M Saleem, F Wappler, E Eckhart, K K Gan, C Gwon, T Hart, K Honscheid, D Hufnagel, H Kagan, R Kass, T K Pedlar, J B Thayer, E von Toerne, T Wilksen, M M Zoeller, S J Richichi, H Severini, P Skubic, S A Dytman, S Nam, V Savinov, S Chen, J W Hinson, J Lee, D H Miller, V Pavlunin, E I Shibata, I P J Shipsey, D Cronin-Hennessy, A L Lyon, C S Park, W Park, E H Thorndike, T E Coan, Y S Gao, F Liu, Y Maravin, I Narsky, R Stroynowski, J Ye, M Artuso, C Boulahouache, K Bukin, E Dambasuren, R Mountain, T Skwarnicki, S Stone, J C Wang, A H Mahmood, S E Csorna, I Danko, Z Xu; CLEO Collaboration
Affiliations

Search for CP violation in tau--> K(pi)nu(tau) decays

G Bonvicini et al. Phys Rev Lett. .

Abstract

We search and find no evidence for CP violation in tau decays into the K(pi)nu(tau) final state. We provide limits on the imaginary part of the coupling constant Lambda describing a relative contribution of the CP violating processes with respect to the standard model to be -0.172<Im(Lambda)<0.067 at 90% C.L.

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