scholarly journals Light pseudoscalar decay constants, quark masses, and low energy constants from three-flavor lattice QCD

2004 ◽  
Vol 70 (11) ◽  
Author(s):  
C. Aubin ◽  
C. Bernard ◽  
C. DeTar ◽  
J. Osborn ◽  
Steven Gottlieb ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Low Energy ◽  
Decay Constants ◽  
Quark Masses ◽  
Energy Constants

scholarly journals Chiral Extrapolations of the ρ(770) Meson in Nf = 2 + 1 Lattice QCD Simulations

2018 ◽  
Vol 175 ◽  
pp. 05002
Author(s):  
R. Molina ◽  
B. Hu ◽  
M. Doering ◽  
M. Mai ◽  
A. Alexandru
Keyword(s):  
Lattice Qcd ◽  
Strange Quark ◽  
Low Energy ◽  
P Wave ◽  
Recent Analysis ◽  
Lattice Data ◽  
Physical Point ◽  
Decay Constants ◽  
Data Analyses ◽  
Energy Constants

Several lattice QCD simulations of meson-meson scattering in p-wave and Isospin = 1 in Nf = 2 + 1 flavours have been carried out recently. Unitarized Chiral Perturbation Theory is used to perform extrapolations to the physical point. In contrast to previous findings on the analyses of Nf = 2 lattice data, where most of the data seems to be in agreement, some discrepancies are detected in the Nf = 2 + 1 lattice data analyses, which could be due to different masses of the strange quark, meson decay constants, initial constraints in the simulation, or other lattice artifacts. In addition, the low-energy constants are compared to the ones from a recent analysis of Nf = 2 lattice data.

scholarly journals SU(2)low-energy constants from mixed-action lattice QCD

2012 ◽  
Vol 86 (9) ◽  
Author(s):  
S. R. Beane ◽  
W. Detmold ◽  
P. M. Junnarkar ◽  
T. C. Luu ◽  
K. Orginos ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Low Energy ◽  
Mixed Action ◽  
Energy Constants

scholarly journals Scaling and low energy constants in lattice QCD with N_f = 2 maximally twisted Wilson quarks

2008 ◽  
Author(s):  
Gregorio Herdoiza ◽  
Roberto Frezzotti ◽  
Petros Dimopoulos ◽  
Carsten Urbach ◽  
Urs Wenger
Keyword(s):  
Lattice Qcd ◽  
Low Energy ◽  
Energy Constants

scholarly journals RESULTS FROM THE ETM COLLABORATION AT LIGHT DYNAMICAL QUARK MASSES

2010 ◽  
Vol 19 (08n10) ◽  
pp. 1619-1627
Author(s):  
K. JANSEN
Keyword(s):  
Degrees Of Freedom ◽  
Charm Quark ◽  
Low Energy ◽  
Chiral Perturbation ◽  
Baryon Spectrum ◽  
Quark Masses ◽  
Mass Collaboration ◽  
Simulation Results ◽  
Energy Constants ◽  
Dynamical Quark

We present lattice QCD simulation results from the European Twisted Mass Collaboration (ETMC). In particular, we present the non-perturbatively computed strange baryon spectrum, list a number of precisely determined low energy constants of chiral perturbation theory, and provide a first account of simulations including the strange and charm quark degrees of freedom.

scholarly journals Light quark masses and pseudoscalar decay constants fromNf= 2 lattice QCD with twisted mass fermions

2008 ◽  
Vol 2008 (04) ◽  
pp. 020-020 ◽  
Author(s):  
ETM Collaboration ◽  
B Blossier ◽  
Ph Boucaud ◽  
P Dimopoulos ◽  
F Farchioni ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Light Quark ◽  
Decay Constants ◽  
Quark Masses ◽  
Twisted Mass

scholarly journals New method for calculating electromagnetic effects in semileptonic beta-decays of mesons

2020 ◽  
Vol 2020 (10) ◽  
Author(s):  
Chien-Yeah Seng ◽  
Xu Feng ◽  
Mikhail Gorchtein ◽  
Lu-Chang Jin ◽  
Ulf-G. Meißner
Keyword(s):  
Perturbation Theory ◽  
Lattice Qcd ◽  
Beta Decay ◽  
Chiral Perturbation Theory ◽  
Low Energy ◽  
Matrix Elements ◽  
Chiral Perturbation ◽  
Electromagnetic Effects ◽  
Beta Decays ◽  
Energy Constants

Abstract We construct several classes of hadronic matrix elements and relate them to the low-energy constants in Chiral Perturbation Theory that describe the electromagnetic effects in the semileptonic beta decay of the pion and the kaon. We propose to calculate them using lattice QCD, and argue that such a calculation will make an immediate impact to a number of interesting topics at the precision frontier, including the outstanding anomalies in |Vus| and the top-row Cabibbo-Kobayashi-Maskawa matrix unitarity.

scholarly journals DK I = 0, $$ D\overline{K} $$ I = 0, 1 scattering and the $$ {D}_{s0}^{\ast } $$(2317) from lattice QCD

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Gavin K. C. Cheung ◽  
◽  
Christopher E. Thomas ◽  
David J. Wilson ◽  
Graham Moir ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Scattering Amplitudes ◽  
Lattice Qcd ◽  
Finite Volume ◽  
Energy Region ◽  
Light Quark ◽  
Bound State ◽  
Vector Resonance ◽  
Quark Masses ◽  
Partial Waves

Abstract Elastic scattering amplitudes for I = 0 DK and I = 0, 1 $$ D\overline{K} $$ D K ¯ are computed in S, P and D partial waves using lattice QCD with light-quark masses corresponding to mπ = 239 MeV and mπ = 391 MeV. The S-waves contain interesting features including a near-threshold JP = 0+ bound state in I = 0 DK, corresponding to the $$ {D}_{s0}^{\ast } $$ D s 0 ∗ (2317), with an effect that is clearly visible above threshold, and suggestions of a 0+ virtual bound state in I = 0 $$ D\overline{K} $$ D K ¯ . The S-wave I = 1 $$ D\overline{K} $$ D K ¯ amplitude is found to be weakly repulsive. The computed finite-volume spectra also contain a deeply-bound D* vector resonance, but negligibly small P -wave DK interactions are observed in the energy region considered; the P and D-wave $$ D\overline{K} $$ D K ¯ amplitudes are also small. There is some evidence of 1+ and 2+ resonances in I = 0 DK at higher energies.

Sign in / Sign up

Export Citation Format

Share Document