scholarly journals Light quark masses and pseudoscalar decay constants from Nf=2 Twisted Mass QCD

2008 ◽  
Author(s):  
Cecilia Tarantino ◽  
Vittorio Lubicz ◽  
Silvano Simula
Keyword(s):  
Light Quark ◽  
Decay Constants ◽  
Quark Masses ◽  
Twisted Mass

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 Leading isospin-breaking corrections to meson masses on the lattice

2018 ◽  
Vol 175 ◽  
pp. 06002 ◽  
Author(s):  
Davide Giusti ◽  
Vittorio Lubicz ◽  
Guido Martinelli ◽  
Francesco Sanfilippo ◽  
Silvano Simula ◽  
...  
Keyword(s):  
Fine Structure ◽  
Quark Mass ◽  
Light Quark ◽  
Structure Constant ◽  
Mass Splitting ◽  
Fine Structure Constant ◽  
Isospin Breaking ◽  
Decay Constants ◽  
Quark Masses ◽  
Small Parameters

We present a study of the isospin-breaking (IB) corrections to pseudoscalar (PS) meson masses using the gauge configurations produced by the ETM Collaboration with Nf = 2+1+1 dynamical quarks at three lattice spacings varying from 0.089 to 0.062 fm. Our method is based on a combined expansion of the path integral in powers of the small parameters [see formula in PDF] and αem, where [see formula in PDF] is the renormalized quark mass and αem the renormalized fine structure constant. We obtain results for the pion, kaon and Dmeson mass splitting; for the Dashen’s theorem violation parameters ϵγ(MM, 2 GeV), ϵπ0 ϵK0(MS, 2 GeV) for the light quark masses [see formula in PDF] for the flavour symmetry breaking parameters R(MS, 2 GeV) and Q(MS, 2 GeV) and for the strong IB effects on the kaon decay constants.

scholarly journals Simulation of an ensemble of Nf = 2 + 1 + 1 twisted mass cloverimproved fermions at physical quark masses

2018 ◽  
Vol 175 ◽  
pp. 02003 ◽  
Author(s):  
Jacob Finkenrath ◽  
Constantia Alexandrou ◽  
Simone Bacchio ◽  
Panagiotis Charalambous ◽  
Petros Dimopoulos ◽  
...  
Keyword(s):  
Pion Mass ◽  
Mass Difference ◽  
Target System ◽  
General Strategy ◽  
Decay Constants ◽  
Quark Masses ◽  
Twisted Mass ◽  
Kaon Mass ◽  
Physical Mass ◽  
The Moment

We present a general strategy aimed at generating Nf = 2+1+1 configurations with quarks at their physical mass using maximally twisted mass fermions to ensure automatic O(a) improvement, in the presence of a clover term tuned to reduce the charged to neutral pion mass difference. The target system, for the moment, is a lattice of size 643 × 128 with a lattice spacing a ~ 0:08 fm. We show preliminary results on the pion and kaon mass and decay constants.

scholarly journals Quark masses and decay constants in $N_f=2+1+1$ isoQCD with Wilson clover twisted mass fermions

2020 ◽  
Author(s):  
Garofalo Marco ◽  
Georg Bergner ◽  
Petros Dimopoulos ◽  
Jacob Finkenrath ◽  
Enrico Fiorenza ◽  
...  
Keyword(s):  
Decay Constants ◽  
Quark Masses ◽  
Twisted Mass

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.

scholarly journals Light quark masses in multi-quark interactions

2013 ◽  
Vol 49 (1) ◽  
Author(s):  
A. A. Osipov ◽  
B. Hiller ◽  
A. H. Blin
Keyword(s):  
Light Quark ◽  
Quark Masses

scholarly journals Light quark masses from the lattice

2000 ◽  
Vol 83-84 ◽  
pp. 173-175
Author(s):  
M. Göckeler ◽  
R. Horsley ◽  
B. Klaus ◽  
W. Kürzinger ◽  
H. Oelrich ◽  
...  
Keyword(s):  
Light Quark ◽  
Quark Masses

scholarly journals Simulating twisted mass fermions at physical light, strange, and charm quark masses

2018 ◽  
Vol 98 (5) ◽  
Author(s):  
Constantia Alexandrou ◽  
Simone Bacchio ◽  
Panagiotis Charalambous ◽  
Petros Dimopoulos ◽  
Jacob Finkenrath ◽  
...  
Keyword(s):  
Charm Quark ◽  
Quark Masses ◽  
Twisted Mass
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