Search for violation in D0 and D+ decays

J. M. Link, V. S. Paolone, M. Reyes, P. M. Yager, J. C. Anjos, I. Bediaga, C. Göbel, J. Magnin, J. M. de Miranda, I. M. Pepe, A. C. dos Reis, F. R.A. Simão, S. Carrillo, E. Casimiro, H. Mendez, A. Sánchez-Hernández, C. Uribe, F. Vazquez, L. Cinquini, J. P. CumalatJ. E. Ramirez, B. O'Reilly, E. W. Vaandering, J. N. Butler, H. W.K. Cheung, I. Gaines, P. H. Garbincius, L. A. Garren, E. Gottschalk, S. A. Gourlay, P. H. Kasper, A. E. Kreymer, R. Kutschke, S. Bianco, F. L. Fabbri, S. Sarwar, A. Zallo, C. Cawlfield, D. Y. Kim, K. S. Park, A. Rahimi, J. Wiss, R. Gardner, Y. S. Chung, J. S. Kang, B. R. Ko, J. W. Kwak, K. B. Lee, S. S. Myung, H. Park, G. Alimonti, M. Boschini, D. Brambilla, B. Caccianiga, A. Calandrino, P. D'Angelo, M. DiCorato, P. Dini, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, M. Mezzadri, L. Milazzo, L. Moroni, D. Pedrini, F. Prelz, M. Rovere, A. Sala, S. Sala, T. F. Davenport, V. Arena, G. Boca, G. Bonomi, G. Gianini, G. Liguori, M. Merlo, D. Pantea, S. P. Ratti, C. Riccardi, P. Torre, L. Viola, P. Vitulo, H. Hernandez, A. M. Lopez, L. Mendez, A. Mirles, E. Montiel, D. Olaya, J. Quinones, C. Rivera, Y. Zhang, N. Copty, M. Purohit, J. R. Wilson, K. Cho, T. Handler, D. Engh, W. E. Johns, M. Hosack, M. S. Nehring, M. Sales, P. D. Sheldon, K. Stenson, M. S. Webster, M. Sheaff, Y. Kwon

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Abstract

A high statistics sample of photoproduced charm particles from the FOCUS (E831) experiment at Fermilab has been used to search for CP violation in the Cabibbo suppressed decay modes D+ → K-K+π+, D0 → K-K+ and D0 → π-π+. We have measured the following CP asymmetry parameters: A(CP)(K-K+π+) = +0.006 ± 0.011 ± 0.005, A(CP)(K-K+) = -0.001 ± 0.022 ± 0.015 and A(CP)(π-π+) = +0.048 ± 0.039 ± 0.025 where the first error is statistical and the second error is systematic. These asymmetries are consistent with zero with smaller errors than previous measurements. (C) 2000 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)232-239
Number of pages8
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume491
Issue number3-4
DOIs
Publication statusPublished - 2000 Oct 19

Bibliographical note

Funding Information:
We wish to acknowledge the assistance of the staffs of Fermi National Accelerator Laboratory, the INFN of Italy, and the physics departments of the collaborating institutions. This research was supported in part by the U.S. National Science Foundation, the U.S. Department of Energy, the Italian Istituto Nazionale di Fisica Nucleare and Ministero dell'Università e della Ricerca Scientifica e Tecnologica, the Brazilian Conselho Nacional de Desenvolvimento Científico e Tecnológico, CONACyT-México, the Korean Ministry of Education, and the Korean Science and Engineering Foundation.

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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