Contributions of Charm Physics to CKM Parameters
نویسنده
چکیده
Determinations of CKM matrix elements are clouded by uncertainties in nonperturbative QCD parameters that relate measurable quantities to the underlying parton-level processes. A principal goal of the CLEO-c program is to provide precision measurements in the c-quark sector that will stimulate lattice QCD theorists to calculate relevant nonperturbative QCD parameters in this sector and to validate the calculations. This interaction between theory and experiment should build confidence in calculations of the parameters in the b-quark sector required for precision determinations of the CKM matrix elements |Vcb|, |Vub|, and |Vtd|.
منابع مشابه
WG V Conveners ’ Report : Charm Inputs for CKM Physics
We introduce the contributions to the proceedings of Working Group V. The main topics were: present and future experiments dedicated to charm physics, the interplay between high-precision measurements and better control over theoretical uncertainties, and searches for signals of new physics in the charm sector. The comparison of Lattice QCD calculations with precise measurements of charm semi-l...
متن کاملCharm Phenomenology for CKM Parameters
We review several key aspects of charm phenomenology which are important for the general program of determination of matrix elements of the Cabbibo-Kobayashi-Maskava (CKM) matrix. We argue that charm physics plays an important role in reducing uncertainties in non-perturbative QCD parameters whose values are required for understanding of underlying quark-level processes. We also review the curr...
متن کاملTime-dependent CP asymmetries in charm decays
The CKM paradigm has been tested thoroughly over the last 40 years in both the neutral K and B systems. The recent discovery of neutral charm meson mixing has prompted the search for CP violation in D decays. We discuss the prospects of performing time-dependent CP asymmetry measurements at facilities either taking data or under construction. Such measurements can (i) provide precision determin...
متن کاملCharm physics: theoretical review
Charm physics plays a unique dual role in the modern investigations of flavor physics. Charm decay and production experiments provide valuable checks and supporting measurements for studies of CP-violation in measurements of CKM parameters in b-physics, as well as outstanding opportunities for searches for new physics. Historically, many methods of heavy quark physics have been first tested in ...
متن کاملCharm Physics with Bes-iii at Bepc-ii
We report on the charm physics potential at BES-III at BEPC-II which will make significant contribution to quark flavor physics this decade. The charm physics program will include studies of leptonic, semileptonic and hadronic charm decays, and tests for physics beyond the Standard Model. Event samples of the order of 30 million DD pairs, 2 million D S D− S pairs at threshold and 10 × 10 J/ψ de...
متن کامل