2007/03/31 by M. Starič, Belle Collaboration, B. Golob +189 · 4 citations
Medicine · Physics and Astronomy · #Atomic and Subatomic Physics Research #Medical Imaging Techniques and Applications #Mixing (physics) #Neutrino Physics Research #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #hep-ex
paper · pdf · doi:10.1103/physrevlett.98.211803
published as Phys.Rev.Lett.98:211803,2007 · 6 pages, 2 figures, submitted to PRL
arxiv created 2007/04/01 · openalex publication_date 2007/05/25 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/23
We observe evidence for D(0)-D(0) mixing by measuring the difference in the apparent lifetime when a D(0) meson decays to the CP eigenstates K(+)K(-) and pi(+)pi(-) and when it decays to the final state K(-)pi(+). We find the relative difference of the lifetimes y(CP) to be [1.31+/-0.32(stat)+/-0.25(syst)]%, 3.2 standard deviations from zero. We also search for a CP asymmetry between D(0) and D(0) decays; no evidence for CP violation is found. These results are based on 540 fb(-1) of data recorded by the Belle detector at the KEKB e(+)e(-) collider.