Journal Article

PreJuSER-1083

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Ab initio Determination of Light Hadron Masses

Dürr, S. ; Fodor, Z. ; Frison, J. ; Hoelbling, C. ; Hoffmann, R. ; Katz, S. D. ; Krieg, S. ; Kurth, T. ; Lellouch, L. ; Lippert, T.FZJ* ; Szabo, K. K. ; Vulvert, G.

2008
American Association for the Advancement of Scienc Washington, DC [u.a.]

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Please use a persistent id in citations: doi:10.1126/science.1163233

Abstract: More than 99% of the mass of the visible universe is made up of protons and neutrons. Both particles are much heavier than their quark and gluon constituents, and the Standard Model of particle physics should explain this difference. We present a full ab initio calculation of the masses of protons, neutrons, and other light hadrons, using lattice quantum chromodynamics. Pion masses down to 190 mega-electron volts are used to extrapolate to the physical point, with lattice sizes of approximately four times the inverse pion mass. Three lattice spacings are used for a continuum extrapolation. Our results completely agree with experimental observations and represent a quantitative confirmation of this aspect of the Standard Model with fully controlled uncertainties.

Keyword(s): J

Note: Computations were performed on the Blue Gene supercomputers at FZ Julich and at IDRIS and on clusters at Wuppertal and CPT. This work is supported in part by European Union (EU) grant I3HP; Orszagos Tudomanyos Kutatasi Alapprogramok grant AT049652; Deutsche Forshungsgemeinschaft grants FO 502/1-2 and SFB-TR 55; EU grants RTN contract MRTN-CT-2006-035482 (FLAVIAnet) and (FP7/2007-2013)/ERC no. 208740; and the CNRS's GDR grant 2921. Useful discussions with J. Charles and M. Knecht are acknowledged.

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Contributing Institute(s):

1. Jülich Supercomputing Centre (JSC)
2. Jülich-Aachen Research Alliance - Simulation Sciences (JARA-SIM)

Research Program(s):

1. Scientific Computing (P41)

Appears in the scientific report 2008

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Database coverage:
; JCR ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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