2000/04/30 by The FOCUS Collaboration, J. M. Link, Vittorio Paolone +98 · 94 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1016/s0370-2693(00)00694-8
published in Physics Letters B 485(1-3), 62-70 (Elsevier BV) · 15 pages, 5 figures
arxiv created 2000/06/05 · openalex publication_date 2000/07/01 · arxiv updated 2012/08/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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 ± 0.0139 ± 0.0074.