Search for D⁰-D⁰ mixing using semileptonic decays at Belle

2004/08/23 by Abe, K.
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex)

paper · doi:10.48550/arxiv.hep-ex/0408112

Abstract

A search for mixing in the neutral D meson system was performed using semileptonic D⁰ -> K- e+ nu decays. The flavor of neutral D mesons at production was tagged by the charge of the slow pion from the decay D*+ -> D⁰ π+. The measurement was performed using 140 fb^-1 of data recorded by the Belle detector. The yield of right and wrong sign decays arising from un-mixed and mixed events, respectively, was determined by a fit to kinematic observables. From the number of signal events we derive an upper limit for the time-integrated mixing rate r_D < 1.4 x 10^-3 at 90% C.L.

Related

• Recent results on D⁰ mixing from Belle
• New Belle results on D0 - D0bar mixing
• Model-independent measurement of D⁰-D⁰ mixing parameters in D⁰→ K⁰_Sπ⁺π^- decays at Belle and Belle II
• Search for D0 - D0bar Mixing and Rare Charm Decays
• A measurement of the rate of wrong-sign decays D0 -> K+ pi-