1994/08/04 by I. I. Bigi, Bigi, I. I.
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9408235
9 pages, LATEX, preprint CERN-TH.7370/94
arxiv created 1994/08/04 · openalex publication_date 1994/08/04 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A list is given of those open questions concerning the dynamics of charm decays where there exists a strong need for an answer. Such a need is based on lessons to be learnt about QCD -- either in their own right or for a better understanding of B physics -- or on searches for New Physics with a small background from the Standard Model. The major items on this list are: lifetimes of the Ξc0,+ baryons; semileptonic branching ratios of Ds, Λc and Ξc hadrons and absolute branching ratios for those states; radiative decays D→ γK^*, γρ/ω, Ds → γϕ/ω, D→ l+l-K/K^*; D0- D0 oscillations down to a sensitivity below 10-4 and CP asymmetries in non-leptonic D decays down to 0.1%. Ongoing and already approved experiments will produce important new insights, which are unlikely to provide sufficient answers to all these questions yet. It is discussed how a third-generation fixed-target experiment like CHARM2000 or a τ-charm factory can fill the bill.