Search for CP violation in the decays D+ → KSπ+ and D+ → KSK+

J. M. Link, M. Reyes, P. M. Yager, J. C. Anjos, I. Bediaga, C. Göbel, J. Magnin, A. Massafferri, J. M. de Miranda, I. M. Pepe, A. C. dos Reis, S. Carrillo, E. Casimiro, A. Sánchez-Hernández, C. Uribe, F. Vázquez, L. Cinquini, J. P. Cumalat, B. O'Reilly, J. E. RamirezE. W. Vaandering, J. N. Butler, H. W.K. Cheung, I. Gaines, P. H. Garbincius, L. A. Garren, E. Gottschalk, P. H. Kasper, A. E. Kreymer, R. Kutschke, S. Bianco, F. L. Fabbri, A. Zallo, C. Cawlfield, D. Y. Kim, A. Rahimi, J. Wiss, R. Gardner, A. Kryemadhi, Y. S. Chung, J. S. Kang, B. R. Ko, J. W. Kwak, K. B. Lee, H. Park, G. Alimonti, M. Boschini, 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, C. Pontoglio, F. Prelz, M. Rovere, S. Sala, T. F. Davenport, L. Agostino, V. Arena, G. Boca, G. Bonomi, G. Gianini, G. Liguori, M. M. Merlo, D. Pantea, S. P. Ratti, C. Riccardi, I. Segoni, P. Vitulo, H. Hernandez, A. M. Lopez, H. Mendez, L. Mendez, A. Mirles, E. Montiel, D. Olaya, A. Paris, J. Quinones, C. Rivera, W. Xiong, Y. Zhang, J. R. Wilson, K. Cho, T. Handler, R. Mitchell, D. Engh, M. Hosack, W. E. Johns, M. Nehring, P. D. Sheldon, K. Stenson, M. Webster, M. Sheaff

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Abstract

The evidence of direct CP violation in the decays D+ → Ksπ+ and D+ → KsK+ was analyzed by a high-statistics sample of a photoproduced charm from the FOCUS experiment. The branching ratio for the decays were measured relative to each other and to D+ → K-π+π+. The relative branching ratio were improvement over earlier measurements and the measured CP asymmetries for the nodes were found to be consistent with zero.

Original languageEnglish (US)
Article number041602
Pages (from-to)416021-416024
Number of pages4
JournalPhysical review letters
Volume88
Issue number4
StatePublished - Jan 28 2002

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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