Electromagnetic splittings of hadrons from improved staggered quarks in full QCD

MILC Collaboration

Electromagnetic splittings of hadrons from improved staggered quarks in full QCD

MILC Collaboration

Department of Physics

Research output: Contribution to journal › Conference Article › peer-review

7 Scopus citations

Abstract

We present our initial study of the electromagnetic splittings of charged and neutral mesons, and the violation of Dashen's theorem. Hadron masses are calculated on MILC N_f = 2 + 1 QCD ensembles at lattice spacing ≈ 0.15 fm, together with quenched non-compact U (1) configurations. The O (a²) tadpole improved staggered quark (asqtad) action is used both for the sea quarks and for six different valence quark masses. Chiral extrapolations are performed using partially quenched chiral perturbation theory incorporating electromagnetic corrections.

Original language	English (US)
Journal	Proceedings of Science
Volume	66
State	Published - 2008
Event	26th International Symposium on Lattice Field Theory, LATTICE 2008 - Williamsburg, United States Duration: Jul 14 2008 → Jul 19 2008

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title = "Electromagnetic splittings of hadrons from improved staggered quarks in full QCD",

abstract = "We present our initial study of the electromagnetic splittings of charged and neutral mesons, and the violation of Dashen's theorem. Hadron masses are calculated on MILC Nf = 2 + 1 QCD ensembles at lattice spacing ≈ 0.15 fm, together with quenched non-compact U (1) configurations. The O (a2) tadpole improved staggered quark (asqtad) action is used both for the sea quarks and for six different valence quark masses. Chiral extrapolations are performed using partially quenched chiral perturbation theory incorporating electromagnetic corrections.",

author = "{MILC Collaboration} and S. Basak and A. Bazavov and C. Bernard and C. DeTar and W. Freeman and Steven Gottlieb and Heller, {U. M.} and Hetrick, {J. E.} and J. Laiho and L. Levkova and J. Osborn and R. Sugar and D. Toussaint",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.; 26th International Symposium on Lattice Field Theory, LATTICE 2008 ; Conference date: 14-07-2008 Through 19-07-2008",

year = "2008",

language = "English (US)",

volume = "66",

journal = "Proceedings of Science",

issn = "1824-8039",

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TY - JOUR

T1 - Electromagnetic splittings of hadrons from improved staggered quarks in full QCD

AU - MILC Collaboration

AU - Basak, S.

AU - Bazavov, A.

AU - Bernard, C.

AU - DeTar, C.

AU - Freeman, W.

AU - Gottlieb, Steven

AU - Heller, U. M.

AU - Hetrick, J. E.

AU - Laiho, J.

AU - Levkova, L.

AU - Osborn, J.

AU - Sugar, R.

AU - Toussaint, D.

N1 - Publisher Copyright: © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.

PY - 2008

Y1 - 2008

N2 - We present our initial study of the electromagnetic splittings of charged and neutral mesons, and the violation of Dashen's theorem. Hadron masses are calculated on MILC Nf = 2 + 1 QCD ensembles at lattice spacing ≈ 0.15 fm, together with quenched non-compact U (1) configurations. The O (a2) tadpole improved staggered quark (asqtad) action is used both for the sea quarks and for six different valence quark masses. Chiral extrapolations are performed using partially quenched chiral perturbation theory incorporating electromagnetic corrections.

AB - We present our initial study of the electromagnetic splittings of charged and neutral mesons, and the violation of Dashen's theorem. Hadron masses are calculated on MILC Nf = 2 + 1 QCD ensembles at lattice spacing ≈ 0.15 fm, together with quenched non-compact U (1) configurations. The O (a2) tadpole improved staggered quark (asqtad) action is used both for the sea quarks and for six different valence quark masses. Chiral extrapolations are performed using partially quenched chiral perturbation theory incorporating electromagnetic corrections.

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UR - http://www.scopus.com/inward/citedby.url?scp=85055351289&partnerID=8YFLogxK

M3 - Conference Article

AN - SCOPUS:85055351289

SN - 1824-8039

VL - 66

JO - Proceedings of Science

JF - Proceedings of Science

T2 - 26th International Symposium on Lattice Field Theory, LATTICE 2008

Y2 - 14 July 2008 through 19 July 2008

ER -

Electromagnetic splittings of hadrons from improved staggered quarks in full QCD

Abstract

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