中文
相关论文

相关论文: Quo Vadis, Fascinum?

200 篇论文

Recently, the BESIII collaboration has reported numerous measurements of various $D_{(s)}$ meson semileptonic decays with significantly improved precision. Together with similar studies carried out at BABAR, Belle, and CLEO, new windows to…

高能物理 - 唯象学 · 物理学 2019-04-17 Mikhail A. Ivanov , Jürgen G. Körner , Jignesh N. Pandya , Pietro Santorelli , Nakul R. Soni , Chien-Thang Tran

Distributions of charged leptons in semileptonic $\Lambda_c$ and $\Lambda_b$ decays can be used as spin analysers for the corresponding charm and bottom quarks. QCD corrections to the energy spectra of charged leptons have been given in the…

高能物理 - 唯象学 · 物理学 2011-01-25 A. Czarnecki , M. Jeżabek , J. G. Körner , J. H. Kühn

Charm production in pp collisions is considered in the framework of perturbative QCD. The values of two parameters, the charm quark mass $m_c$ and the QCD scale mu^2, are determined from the comparison of the theoretical calculations with…

高能物理 - 唯象学 · 物理学 2011-03-17 C. Merino , C. Pajares , M. M. Ryzhinskiy , Yu. M. Shabelski , A. G. Shuvaev

We present hadron-level predictions from the Monte Carlo generator Cascade and numerical calculations of charm and beauty production at the Fermilab Tevatron within the framework of the $k_T$-factorization QCD approach. Our consideration is…

高能物理 - 唯象学 · 物理学 2011-01-25 H. Jung , M. Kraemer , A. V. Lipatov , N. P. Zotov

In these proceedings, heavy flavor production as measured by STAR is disscussed. This can be done directly by reconstruction of the hadronic decays or indirectly by the measurement of electrons from semileptonic decays of heavy quark…

核实验 · 物理学 2007-05-23 Jaroslav Bielcik

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 present a first test of heavy quark spin-flavour symmetries in matrix elements for semi-leptonic decays \bar B to D l\bar\nu and \bar B to D^* l\bar\nu. We show that O(1/m_Q) corrections are small at masses around the charm for form…

高能物理 - 格点 · 物理学 2007-05-23 Henning Hoeber

Experimental results for the pseudoscalar decay constants f_{D} and f_{D_s} are reviewed. Semileptonic form factor results from D -> (pseudoscalar) l nu and D -> (vector) l nu decays are also reviewed.

高能物理 - 实验 · 物理学 2009-11-13 Peter Zweber

It is commonly believed that the LHVTs can be tested through measuring the Bell's inequalities. This scheme, for the massive particle system, was originally set up for the entangled K^0\bar{K^0} pair system from the \phi factory. In this…

高能物理 - 唯象学 · 物理学 2008-11-26 Junli Li , Cong-Feng Qiao

We present two topics on charm meson semileptonic decay. Evidence for interference in the decay K*munu and new results on the D+ to K*munu/K2pi branching fraction.

高能物理 - 实验 · 物理学 2007-05-23 Jim Wiss

The combination of precise experimental measurements and theoretical predictions allows to extract Cabibbo-Kobayashi-Maskawa (CKM) matrix elements or constrain flavor changing processes in the standard model. Focusing at theoretical…

高能物理 - 唯象学 · 物理学 2024-09-05 Oliver Witzel

The study of the charm quark continues to have wide interest as a possible avenue for the discovery of physics beyond the Standard Model and can as well be used as a tool for understanding the non-perturbative aspects of the strong…

高能物理 - 实验 · 物理学 2022-03-02 Angelo Di Canto

Flavour physics has a long tradition of paving the way for direct discoveries of new particles and interactions. Results over the last decade have placed stringent bounds on the parameter space of physics beyond the Standard Model. Early…

高能物理 - 实验 · 物理学 2015-06-04 Marco Gersabeck , Vladimir V. Gligorov , Nicola Serra

The current status of the theory and phenomenology of weak decays of hadrons containing a heavy quark is reviewed. Exclusive semileptonic and rare decays of $B$ mesons are discussed, as well as inclusive decay rates, the semileptonic…

高能物理 - 唯象学 · 物理学 2008-02-03 Matthias Neubert

This is a summary of experimental results on photons, leptons, and heavy quarks presented at Quark Matter 2008. A first measurement of the bottom to charm contribution to the lepton spectrum has given experimental indication for the…

核实验 · 物理学 2008-11-26 Richard Seto

Within the framework of phenomenological Lagrangians we construct the effective action of QCD relevant for the study of semileptonic decays of charmed mesons. Hence we evaluate the form factors of D -> P(0^-) l^+ nu_l at leading order in…

高能物理 - 唯象学 · 物理学 2014-11-17 G. Amoros , S. Noguera , J. Portoles

The semileptonic decay of heavy flavor mesons offers a clean environment for extraction of the Cabibbo-Kobayashi-Maskawa (CKM) matrix elements, which describes the CP-violating and flavor changing process in the Standard Model. The involved…

高能物理 - 唯象学 · 物理学 2021-03-17 Lu Zhang , Xian-Wei Kang , Xin-Heng Guo , Ling-Yun Dai , Tao Luo , Chao Wang

The experimentally measured rates of the semileptonic decays K -> pi l nu and D -> K(pi) l nu can be combined with lattice calculations of the associated form factors to precisely extract the CKM matrix elements |V_{us}| and |V_{cs(d)}|. We…

Recent experimental progress measuring the branching fractions of the heavy-baryon semileptonic decays $\Xi_c\to \Xi \ell \nu$ has stimulated theoretical interest and motivates precise lattice calculations of the form factors. Here we…

高能物理 - 格点 · 物理学 2023-09-18 Callum Farrell , Stefan Meinel

Although the Standard Model has been firmly established, the search for physics beyond the SM is ongoing by investigating new experimental probes. Rare charm decays are a unique tool to access New Physics studies. The high luminosity…

高能物理 - 实验 · 物理学 2022-07-29 M. Destefanis