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We present an overview of state of the art lattice quantum chromodynamcis calculations for heavy-light quantities. Special focus is given to the calculation of form factors for semi-leptonic decays of $B_{(s)}$ and $D$ mesons, the…

High Energy Physics - Phenomenology · Physics 2020-02-11 Oliver Witzel

We introduce and discuss basic topics in the theory of kaons and charmed particles. In the first part, theoretical methods in weak decays such as operator product expansion, renormalization group and the construction of effective…

High Energy Physics - Phenomenology · Physics 2017-08-23 Gerhard Buchalla

Low-energy experiments involving kaon, B-meson, D-meson, and hyperon flavor-changing neutral transitions have confirmed the loop-induced flavor-changing neutral current (FCNC) picture of the standard model (SM). The continuing study of…

High Energy Physics - Phenomenology · Physics 2009-09-01 Xiao-Gang He , Jusak Tandean , G. Valencia

The importance of future studies of charm and $\tau$ decays is emphasized as probes of New Physics: the most powerful tools are \cp asymmetries in charm and $\tau$ decays both in partial widths and final state distributions. While these…

High Energy Physics - Phenomenology · Physics 2008-11-26 I. I. Bigi

In this review, we discuss some interesting issues in charm physics which is full with puzzles and challenges. So far in the field there exist many problems which have not obtained satisfactory answers yet and more unexpected phenomena have…

High Energy Physics - Phenomenology · Physics 2009-02-12 Xue-Qian Li , Xiang Liu , Zheng-Tao Wei

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…

High Energy Physics - Experiment · Physics 2011-11-02 Adrian Bevan

We study heavy-heavy and heavy-light quark systems for charm with a relativistic heavy quark action in 2+1 flavor lattice QCD. Configurations are generated by the PACS-CS Collaboration at the lattice spacing is $a=0.09$ fm with the lattice…

We report on our ongoing determination of the charm quark mass and the masses and decay constants of various charmed mesons, obtained within a mixed-action setup. We employ $N_f=2+1$ CLS ensembles combined with a Wilson twisted mass valence…

High Energy Physics - Lattice · Physics 2021-12-02 A. Bussone , A. Conigli , J. Frison , G. Herdoíza , C. Pena , D. Preti , J. Á. Romero , J. Ugarrio

The CLEO-c experiment, running at charm threshold, has measured many charmed meson properties. Here I summarize results on leptonic and semileptonic decays of D mesons, as well as measurements hadronic decay strong phases that are relevant…

High Energy Physics - Experiment · Physics 2019-08-13 P. U. E. Onyisi

A recent combination of measurements performed by the LHCb collaboration determined that $\gamma=(63.8^{+3.5}_{-3.7})^\circ$. The fit combined the results of $\gamma$ and charm measurements, which resulted in precision improvements for the…

High Energy Physics - Experiment · Physics 2024-04-30 Innes Mackay

To provide focus to my review of charm theory at the B-Physics and CP-Violation conference, I consider theoretical issues related to possible charm studies at B-factories. A few topics of interest to the author are stressed -- rare decays,…

High Energy Physics - Phenomenology · Physics 2016-11-03 Eugene Golowich

I briefly review the status and recent progress in the theoretical understanding of non-leptonic decays of beauty and charm hadrons. Focusing on a personal selection of topics, this covers perturbative calculations in quantum…

High Energy Physics - Phenomenology · Physics 2014-08-05 Thorsten Feldmann

Decoupling of heavy quarks at low energies can be described by means of an effective theory as shown by S. Weinberg in Ref. [1]. We study the decoupling of the charm quark by lattice simulations. We simulate a model, QCD with two degenerate…

High Energy Physics - Lattice · Physics 2017-11-22 Francesco Knechtli , Tomasz Korzec , Björn Leder , Graham Moir

Recent results on inclusive charmless semileptonic decays of B mesons are reviewed. Emphasis is given to measurements on the recoil of fully reconstructed B mesons, which allow to exploit several regions of phase space. Preliminary averages…

High Energy Physics - Experiment · Physics 2011-01-24 Concezio Bozzi

We use lattice QCD simulations, with MILC gluon configurations and HISQ c-quark propagators, to make very precise determinations of moments of charm-quark pseudoscalar, vector and axial-vector correlators. These moments are combined with…

We extend the Standard Model with the general effective Hamiltonian for the quark level transition $c \to s \ell \nu$ with a complete set of four fermion operators including right-handed neutrinos. The current experimental measurements in…

High Energy Physics - Phenomenology · Physics 2025-04-10 Priyanka Boora , Dinesh Kumar , Kavita Lalwani

Weak decays of charm mesons has been used for studies of light quark spectroscopy, with particular emphasis on the J^{PC}=0^{++} states. Recent results on light scalars are summarized and some conceptual issues are discussed, especially the…

High Energy Physics - Experiment · Physics 2015-06-25 Alberto Reis

In this presentation, I discussed a) the charm total cross-section and its comparisons to measurements at other beam energies and pQCD calculations; b) the semileptonic decay of charmed hadrons and the sensitivity of non-photonic leptons to…

Nuclear Experiment · Physics 2011-07-19 Zhangbu Xu

We discuss the present status of global fits to the CKM unitary triangle using the latest experimental and theoretical constraints. For the required nonperturbative weak matrix elements, we use three-flavor lattice QCD averages from…

High Energy Physics - Phenomenology · Physics 2012-04-25 Jack Laiho , Enrico Lunghi , Ruth S. Van de Water

Recent theoretical and experimental improvements in the determination of charm and bottom quark masses are discussed. The final results, $m_c(3 \text{GeV})=986(13) $MeV and $m_b(m_b)=4163(16) $MeV represent, together with a closely related…

High Energy Physics - Phenomenology · Physics 2010-01-29 Johann H. Kuhn
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