OTHER LIGHT QUARK MASS RATIOS

${\mathit m}_{{{\mathit s}}}/{{\overline{\mathit m}}}$ MASS RATIO

INSPIRE   JSON  (beta) PDGID:
Q123MR5
${{\overline{\mathit m}}}{}\equiv$ (${\mathit m}_{{{\mathit u}}}$ $+$ ${\mathit m}_{{{\mathit d}}})/$2
VALUE DOCUMENT ID TECN
$\bf{ 27.33 {}^{+0.18}_{-0.14}}$ OUR EVALUATION  See the ideogram below.
$27.17$ $\pm0.32$ ${}^{+0.56}_{-0.38}$ 1
ALEXANDROU
2021
LATT
$27.0$ $\pm1.0$ $\pm0.4$ 2
BRUNO
2020
LATT
$27.35$ $\pm0.05$ ${}^{+0.10}_{-0.07}$ 3
BAZAVOV
2014A
 LATT
$26.66$ $\pm0.32$ 4
CARRASCO
2014
LATT
$27.36$ $\pm0.54$ 5
ARTHUR
2013
LATT
$27.53$ $\pm0.20$ $\pm0.08$ 6
DURR
2011
LATT
• • We do not use the following data for averages, fits, limits, etc. • •
$26.8$ $\pm1.4$ 7
AOKI
2011A
 LATT
$27.3$ $\pm0.9$ 8
BLOSSIER
2010
LATT
$28.8$ $\pm1.65$ 9
ALLTON
2008
LATT
$27.3$ $\pm0.3$ $\pm1.2$ 10
BLOSSIER
2008
LATT
$23.5$ $\pm1.5$ 11
OLLER
2007A
 THEO
$27.4$ $\pm0.4$ 12
AUBIN
2004
LATT
1  ALEXANDROU 2021 determines the quark mass using a lattice calculation of the meson and baryon masses with a twisted mass fermion action. The simulations are carried out using 2+1+1 dynamical quarks with ${\mathit m}_{{{\mathit u}}}$ = ${\mathit m}_{{{\mathit d}}}{}\not={\mathit m}_{{{\mathit s}}}{}\not={\mathit m}_{{{\mathit c}}}$, including gauge ensembles close to the physical pion point.
2  BRUNO 2020 determines the light quark mass using a lattice calculation with ${{\mathit n}_{{{f}}}}$ = 2+1 flavors of Wilson fermions. The scale has been set from ${{\mathit f}_{{{\pi}}}}$ and ${{\mathit f}_{{{K}}}}$. The tuning was done using the masses of the lightest (${{\mathit \pi}}$) and strange (${{\mathit K}}$) pseudoscalar mesons.
3  BAZAVOV 2014A is a lattice computation using 4 dynamical flavors of HISQ fermions.
4  CARRASCO 2014 is a lattice QCD computation of light quark masses using 2 + 1 + 1 dynamical quarks, with ${{\mathit m}_{{{u}}}}$ = ${{\mathit m}_{{{d}}}}{}\not=$ ${{\mathit m}_{{{s}}}}{}\not=$ ${{\mathit m}_{{{c}}}}$. The ${\mathit {\mathit u}}$ and ${\mathit {\mathit d}}$ quark masses are obtained separately by using the ${{\mathit K}}$ meson mass splittings and lattice results for the electromagnetic contributions.
5  ARTHUR 2013 is a lattice computation using 2+1 dynamical domain wall fermions.
6  DURR 2011 determine quark mass from a lattice computation of the meson spectrum using ${{\mathit n}_{{{f}}}}$ = 2 + 1 dynamical flavors. The lattice simulations were done at the physical quark mass, so that extrapolation in the quark mass was not needed.
7  AOKI 2011A determine quark masses from a lattice computation of the hadron spectrum using ${{\mathit n}_{{{f}}}}$ = 2 + 1 dynamical flavors of domain wall fermions.
8  BLOSSIER 2010 determines quark masses from a computation of the hadron spectrum using ${{\mathit n}_{{{f}}}}$=2 dynamical twisted-mass Wilson fermions.
9  ALLTON 2008 use a lattice computation of the ${{\mathit \pi}}$, ${{\mathit K}}$, and ${{\mathit \Omega}}$ masses with 2+1 dynamical flavors of domain wall quarks, and non-perturbative renormalization.
10  BLOSSIER 2008 use a lattice computation of pseudoscalar meson masses and decay constants with 2 dynamical flavors and non-perturbative renormalization.
11  OLLER 2007A use unitarized chiral perturbation theory to order $\mathit p{}^{4}$.
12  Three flavor dynamical lattice calculation of pseudoscalar meson masses.

           ${\mathit m}_{{{\mathit s}}}/{{\overline{\mathit m}}}$ MASS RATIO
References