A measurement of lifetime differences in the neutral D-meson system

Autor: Sandra Malvezzi, F. Prelz, A. Sala, L. Méndez, Paolo Dini, Germano Bonomi, M. Boschini, M. Hosack, E. Casimiro, P. H. Garbincius, J. S. Kang, M. Sheaff, A. Sanchez-Hernandez, J. M. Link, T. Handler, M Sales, M. DiCorato, B. O'Reilly, D Brambilla, J. Magnin, L. Milazzo, D. Engh, P. Torre, B. Caccianiga, Y. Zhang, Dario Menasce, D. Pantea, I. M. Pepe, Y-J Kwon, D. Y. Kim, M.A Vale, J. N. Butler, V. Arena, Daniele Pedrini, Paolo Vitulo, A. Rahimi, Kevin Stenson, Erik Gottschalk, N. K. Copty, Hector Mendez, G. Boca, P. Inzani, J. C. Anjos, M. S. Webster, M. S. Nehring, I. Gaines, F. R.A. Simão, J. E. Ramirez, P. M. Yager, Willard Johns, S. Carrillo, A. M. Lopez, F. Leveraro, James R. Wilson, G. Liguori, J. M. De Miranda, C. Cawlfield, T. F. Davenport, A. Zallo, F. Vázquez, Kisoo Lee, Marco Giammarchi, A. E. Kreymer, A. Mirles, J. W. Kwak, S. P. Ratti, C. Göbel, P. H. Kasper, S. Sala, S. Sarwar, Gabriele Gianini, K. S. Park, D. Olaya, V. Paolone, C. Rivera, Stefano Bianco, Cristina Riccardi, A Calandrino, Harry Cheung, Milind Purohit, I. Bediaga, Gianluca Alimonti, H. Hernandez, J. Quinones, C. Uribe, P. D'Angelo, J. Wiss, R. Kutschke, Marco A. Reyes, Y. S. Chung, John Perry Cumalat, L. Cinquini, B.R Ko, Stephen A. Gourlay, M. M. Merlo, Paul Sheldon, H. Park, M. Mezzadri, Fabrizio Fabbri, E. W. Vaandering, L. A. Garren, E. Montiel, Robert Gardner, Marco Rovere, L. Viola, K. Cho, Luigi Moroni, A. C. dos Reis, S. S. Myung
Rok vydání: 2000
Předmět:
DOI: 10.48550/arxiv.hep-ex/0004034
Popis: Using a high statistics sample of photoproduced charm particles from the FOCUS experiment at Fermilab, we compare the lifetimes of neutral D mesons decaying via D0 to K- pi+ and K- K+ to measure the lifetime differences between CP even and CP odd final states. These measurements bear on the phenomenology of D0 - D0bar mixing. If the D0 to K-pi+ is an equal mixture of CP even and CP odd eigenstates, we measure yCP = 0.0342 \pm 0.0139 \pm 0.0074.
Comment: 15 pages, 5 figures
Databáze: OpenAIRE