中文
相关论文

相关论文: Heavy Domain Wall Fermions: The RBC and UKQCD char…

200 篇论文

Using the non-relativistic version of Borel sum rules, combined to the very accurate experimental information on the Charmonium and Upsilon spectra, we rigorously investigate the Euclidean mass of the Charm and Bottom quark. Our analysis is…

高能物理 - 唯象学 · 物理学 2007-05-23 M. Chabab , R. Markazi , E. H. Saidi

We report on the progress of our calculation of form factors for the exclusive semileptonic decay of $B$ mesons to pions on $2+1$ flavour lattices with spacings from $0.080~\mathrm{fm}$ down to $0.044~\mathrm{fm}$. Using the M\"{o}bius…

高能物理 - 格点 · 物理学 2018-11-02 Brian Colquhoun , Shoji Hashimoto , Takashi Kaneko

We review recent results for the chiral behavior of meson masses and decay constants and the determination of the light quark masses by the RBC and UKQCD collaborations. We find that one-loop SU(2) chiral perturbation theory represents the…

高能物理 - 格点 · 物理学 2010-01-21 Enno E. Scholz

Motivated by the results of the recent experimental discoveries for charm and bottom baryons, the masses and magnetic moments of the heavy baryons with $J^P=3/2^+$ containing a single heavy quark are studied within light cone QCD sum rules…

高能物理 - 唯象学 · 物理学 2015-05-13 T. M. Aliev , K. Azizi , A. Ozpineci

We compute the charm quark mass in lattice QCD and compare different formulations of the heavy quark, and quenched data to that with dynamical sea quarks. We take the continuum limit of the quenched data by extrapolating from three…

高能物理 - 格点 · 物理学 2009-11-10 UKQCD Collaboration , A. Dougall , C. M. Maynard , C. McNeile

This paper will review the data collected by the H1 and ZEUS Collaborations concerning the production of heavy quarks (charm and beauty) at the electron-proton collider HERA. Heavy quark production is an important testing ground for quantum…

高能物理 - 实验 · 物理学 2008-11-26 R. Brugnera

We discuss the dynamics in finite density medium including a heavy impurity particle (hadron or quark) with a heavy flavor, charm and bottom, at zero temperature. As a system, we consider a $\bar{D}$ ($B$) meson embedded in nuclear matter…

高能物理 - 唯象学 · 物理学 2019-08-07 S. Yasui , K. Sudoh

The decay constants of the charmed heavy pseudoscalar D and D_s mesons are revisited within a recently developed novel approach to dispersive QCD sum rules which relies on an unprejudiced implementation of quark-hadron duality. The proposed…

高能物理 - 唯象学 · 物理学 2012-05-31 Wolfgang Lucha , Dmitri Melikhov , Silvano Simula

Nucleon-structure calculations of isovector vector- and axialvector-current form factors, transversity and scalar charge, and quark momentum and helicity fractions are reported from two recent 2+1-flavor dynamical domain-wall fermions…

高能物理 - 格点 · 物理学 2019-08-14 Shigemi Ohta

We present the first study of the quark mass dependence of the heavy quark momentum and spatial diffusion coefficients using lattice QCD with light dynamical quarks corresponding to a pion mass of 320 MeV. We find that, for the temperature…

We take a new approach to determine the scale parameter $r_0$, the physical masses of strange and charm quarks through a global fit which incorporates continuum extrapolation, chiral extrapolation and quark mass interpolation to the lattice…

高能物理 - 格点 · 物理学 2014-01-08 Y. B. Yang , Y. Chen , A. Alexandru , S. J. Dong , T. Draper , M. Gong , F. X. Lee , A. Li , K. F. Liu , Z. Liu , M. Lujan , N. Mathur

The RBC and UKQCD collaborations have been investigating hadron physics in numerical lattice quantum chromodynamics (QCD) with (2+1) flavors of dynamical domain wall fermions (DWF) quarks that preserves continuum-like chiral and flavor…

高能物理 - 格点 · 物理学 2019-08-15 Shigemi Ohta

We demonstrate that fermion masses in the Standard Model (SM) can be constrained by the dispersion relations obeyed by hadronic and semileptonic decay widths of a fictitious heavy quark $Q$ with an arbitrary mass. These relations, imposing…

高能物理 - 唯象学 · 物理学 2023-05-17 Hsiang-nan Li

I review recent progress in lattice computations relevant for $B$- and charm physics, focusing on decay and mixing amplitudes with a direct impact on CKM analysis. Emphasis is put on the interplay with the upcoming new generation of…

高能物理 - 格点 · 物理学 2016-07-08 Carlos Pena

Applications of Domain Wall fermions to various vector-like lattice theories are reviewed with an emphasis on QCD thermodynamics. Methods for improving their chiral properties at strong coupling are discussed and results from implementing…

高能物理 - 格点 · 物理学 2007-05-23 P. Vranas

Lattice quantum chromodynamics provides first principles calculations for hadrons containing heavy quarks -- charm and bottom quarks. Their mass spectra, decay rates, and some hadronic matrix elements can be calculated on the lattice in a…

高能物理 - 唯象学 · 物理学 2009-11-10 Shoji Hashimoto , Tetsuya Onogi

Following the successful application of the relativistic heavy quark(RHQ) action to the charmonium and charm-strange meson spectrum, we study here the bottom system to explore the validity of this method in a regime with larger heavy quark…

高能物理 - 格点 · 物理学 2009-04-14 Min Li

We report on our progress to obtain the decay constants f_B and f_Bs from lattice-QCD simulations on the RBC-UKQCD Collaborations 2+1 flavor domain-wall Iwasaki lattices. Using domain-wall light quarks and relativistic b-quarks we analyze…

高能物理 - 格点 · 物理学 2015-06-17 Oliver Witzel

The role of charm in testing the Standard Model description of quark mixing and CP violation through measurements of lifetimes, decay constants and semileptonic form factors is reviewed. Together with Lattice QCD, charm has the potential…

高能物理 - 实验 · 物理学 2008-11-26 I. Shipsey

We use a QCD relativistic potential model to compute the strong coupling constant $g$ appearing in the effective Lagrangian which describes the interaction of $0^-$ and $1^-$ $\bar q Q$ states with soft pions in the limit $m_Q \to \infty$.…

高能物理 - 唯象学 · 物理学 2007-05-23 F. De Fazio