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Domain wall QCD with physical quark masses

Domain wall QCD with physical quark masses
Domain wall QCD with physical quark masses
We present results for several light hadronic quantities (fπ, fK, BK, mud, ms, t0½, w0) obtained from simulations of 2+1 flavor domain wall lattice QCD with large physical volumes and nearly physical pion masses at two lattice spacings. We perform a short, O (3) %, extrapolation in pion mass to the physical values by combining our new data in a simultaneous chiral/continuum “global fit” with a number of other ensembles with heavier pion masses. We use the physical values of mπ, mK and mΩ to determine the two quark masses and the scale—all other quantities are outputs from our simulations. We obtain results with subpercent statistical errors and negligible chiral and finite-volume systematics for these light hadronic quantities, including fπ = 130.2(9) MeV; fK = 155.5(8) MeV; the average up/down quark mass and strange quark mass in the ‾MS scheme at 3 GeV, 2.997(49) and 81.64(1.17) MeV respectively; and the neutral kaon mixing parameter, BK, in the renormalization group invariant scheme, 0.750(15) and the ‾MS scheme at 3 GeV, 0.530(11).
1550-7998
1-68
Blum, T.
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Boyle, P.A.
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Christ, N.H.
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Frison, J.
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Garron, N.
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Hudspith, R.J.
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Izubuchi, T.
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Janowski, T.
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Jung, C.
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Jüttner, A.
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Kelly, C.
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Kenway, R.D.
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Lehner, C.
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Marinkovic, M.
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Mawhinney, R.D.
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McGlynn, G.
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Murphy, D.J.
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Ohta, S.
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Portelli, A.
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Sachrajda, C.T.
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Soni, A.
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Blum, T.
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Boyle, P.A.
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Christ, N.H.
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Frison, J.
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Garron, N.
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Hudspith, R.J.
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Izubuchi, T.
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Janowski, T.
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Jung, C.
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Jüttner, A.
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Kelly, C.
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Kenway, R.D.
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Lehner, C.
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Marinkovic, M.
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Mawhinney, R.D.
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McGlynn, G.
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Murphy, D.J.
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Ohta, S.
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Portelli, A.
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Sachrajda, C.T.
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Soni, A.
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Blum, T., Boyle, P.A., Christ, N.H., Frison, J., Garron, N., Hudspith, R.J., Izubuchi, T., Janowski, T., Jung, C., Jüttner, A., Kelly, C., Kenway, R.D., Lehner, C., Marinkovic, M., Mawhinney, R.D., McGlynn, G., Murphy, D.J., Ohta, S., Portelli, A., Sachrajda, C.T. and Soni, A. (2016) Domain wall QCD with physical quark masses. Physical Review D, 93 (7), 1-68. (doi:10.1103/PhysRevD.93.074505).

Record type: Article

Abstract

We present results for several light hadronic quantities (fπ, fK, BK, mud, ms, t0½, w0) obtained from simulations of 2+1 flavor domain wall lattice QCD with large physical volumes and nearly physical pion masses at two lattice spacings. We perform a short, O (3) %, extrapolation in pion mass to the physical values by combining our new data in a simultaneous chiral/continuum “global fit” with a number of other ensembles with heavier pion masses. We use the physical values of mπ, mK and mΩ to determine the two quark masses and the scale—all other quantities are outputs from our simulations. We obtain results with subpercent statistical errors and negligible chiral and finite-volume systematics for these light hadronic quantities, including fπ = 130.2(9) MeV; fK = 155.5(8) MeV; the average up/down quark mass and strange quark mass in the ‾MS scheme at 3 GeV, 2.997(49) and 81.64(1.17) MeV respectively; and the neutral kaon mixing parameter, BK, in the renormalization group invariant scheme, 0.750(15) and the ‾MS scheme at 3 GeV, 0.530(11).

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Accepted/In Press date: 4 December 2014
e-pub ahead of print date: 12 April 2016
Published date: 12 April 2016
Organisations: Theoretical Partical Physics Group

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Local EPrints ID: 393642
URI: https://eprints.soton.ac.uk/id/eprint/393642
ISSN: 1550-7998
PURE UUID: ea02612a-068a-40d1-a00a-0d188e60651b

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Date deposited: 29 Apr 2016 09:01
Last modified: 09 Jul 2018 16:31

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Contributors

Author: T. Blum
Author: P.A. Boyle
Author: N.H. Christ
Author: J. Frison
Author: N. Garron
Author: R.J. Hudspith
Author: T. Izubuchi
Author: T. Janowski
Author: C. Jung
Author: A. Jüttner
Author: C. Kelly
Author: R.D. Kenway
Author: C. Lehner
Author: M. Marinkovic
Author: R.D. Mawhinney
Author: G. McGlynn
Author: D.J. Murphy
Author: S. Ohta
Author: A. Portelli
Author: C.T. Sachrajda
Author: A. Soni

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