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

Authors
Link, JM Paolone, VS Reyes, M Yager, PM Anjos, JC Bediaga, I Gobel, C Magnin, J de Miranda, JM Pepe, IM dos Reis, AC Simao, FRA Vale, MA Carrillo, S Casimiro, E Mendez, H Sanchez-Hernandez, A Uribe, C Vazquez, F Cinquini, L Cumalat, JP Ramirez, JE O'Reilly, B Vaandering, EW Butler, JN Cheung, HWK Gaines, I Garbincius, PH Garren, LA Gottschalk, E Gourlay, SA Kasper, PH Kreymer, AE Kutschke, R Bianco, S Fabbri, FL Sarwar, S Zallo, A Cawlfield, C Kim, DY Park, KS Rahimi, A Wiss, J Gardner, R Chung, YS Kang, JS Ko, BR Kwak, JW Lee, KB Myung, SS Park, H Alimonti, G Boschini, M Brambilla, D Caccianiga, B Calandrino, A D'Angelo, P DiCorato, M Dini, P Giammarchi, M Inzani, P Leveraro, F Malvezzi, S Menasce, D Mezzadri, M Milazzo, L Moroni, L Pedrini, D Prelz, F Revere, M Sala, A Sala, S Davenport, TF Arena, V Boca, G Bonomi, G Gianini, G Liguori, G Merlo, M Pantea, D Ratti, SP Riccardi, C Torre, P Viola, L Vitulo, P Hernandez, H Lopez, AM Mendez, L Mirles, A Montiel, E Olaya, D Quinones, J Rivera, C Zhang, Y Copty, N Purohit, M Wilson, JR Cho, K Handler, T Engh, D Johns, WE Hosack, M Nehring, MS Sales, M Sheldon, PD Stenson, K Webster, MS Sheaff, M Kwon, YJ
Citation
Jm. Link et al., A measurement of lifetime differences in the neutral D-meson system, PHYS LETT B, 485(1-3), 2000, pp. 62-70
Citations number
15
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
03702693 → ACNP
Volume
485
Issue
1-3
Year of publication
2000
Pages
62 - 70
Database
ISI
SICI code
0370-2693(20000713)485:1-3<62:AMOLDI>2.0.ZU;2-7
Abstract
Using a high statistics sample of photoproduced charm particles from the FO CUS experiment at Fermilab, we compare the lifetimes of neutral D mesons de caying via D-0 --> K- pi(+) and K-K+ to measure the lifetime differences be tween CP even and CP odd final states. These measurements bear on the pheno menology of D-0 - (D) over bar(0) mixing. If the D-0 --> K- pi(+) is an equ al mixture of CP even and CP odd eigenstates, we measure y(CP) = (Gamma(CP even) - Gamma(CP odd))/(Gamma(CP even) + Gamma(CP odd)) = 0.0342 +/- 0.0139 +/- 0.0074. (C) 2000 Elsevier Science B.V. All rights reserved.