W. Schroers
Massachusetts Institute of Technology
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Publication
Featured researches published by W. Schroers.
Physical Review D | 2008
W. Schroers; Jonathan Bratt; Michael Engelhardt; Bernhard Musch; Kostas Orginos
We present a comprehensive study of the lowest moments of nucleon generalized parton distributions in N{sub f}=2+1 lattice QCD using domain-wall valence quarks and improved staggered sea quarks. Our investigation includes helicity dependent and independent generalized parton distributions for pion masses as low as 350 MeV and volumes as large as (3.5 fm){sup 3}, for a lattice spacing of 0.124 fm. We use perturbative renormalization at one-loop level with an improvement based on the nonperturbative renormalization factor for the axial vector current, and only connected diagrams are included in the isosinglet channel.
Physical Review D | 2003
Ph. Hagler; John W. Negele; Dru B. Renner; W. Schroers; Th. Lippert; K. Schilling; Lhpc; Sesam Collaborations
Calculation of the moments of generalized parton distributions in lattice QCD requires more powerful techniques than those previously used to calculate the moments of structure functions. Hence, we present a novel approach that exploits the full information content from a given lattice configuration by measuring an overdetermined set of lattice observables to provide maximal statistical constraints on the generalized form factors at a given virtuality t. In an exploratory investigation using unquenched QCD configurations at intermediate sea quark masses, we demonstrate that our new technique is superior to conventional methods and leads to reliable numerical signals for the
Physical Review D | 2009
A. Walker-Loud; Harvey B. Meyer; Dru B. Renner; Huey-Wen Lin; W. Schroers; George T. Fleming; Sergey Syritsyn; Colin Morningstar; M. Procura; John W. Negele; Robert G. Edwards; Kostas Orginos; Bernhard Musch; Michael Engelhardt; Andrew Pochinsky; Meifeng Lin; Ph. Hagler; David G. Richards
n=2
Physical Review Letters | 2004
Meinulf Göckeler; R. Horsley; D. Pleiter; P.E.L. Rakow; A. Schäfer; G. Schierholz; W. Schroers
flavor singlet generalized form factors up to
Physical Review D | 2006
V. M. Braun; M. Göckeler; R. Horsley; H. Perlt; Dirk Pleiter; P.E.L. Rakow; G. Schierholz; A. Schiller; W. Schroers; Hinnerk Stuben; James Zanotti
3{\mathrm{GeV}}^{2}.
Physical Review Letters | 2006
Robert G. Edwards; George T. Fleming; P Hagler; John W. Negele; Konstantinos Orginos; Andrew Pochinsky; Dru B. Renner; David A. R. Richards; W. Schroers
The contribution from connected diagrams in the flavor singlet sector to the total quark angular momentum is measured to an accuracy of the order of 1%.
Physical Review D | 2004
A.P. Bakulev; K. Passek-Kumericki; W. Schroers; N. G. Stefanis
We present a calculation of the light-hadron spectrum in full QCD using three-flavor Asqtad sea quarks and domain wall valence quarks. Calculations of meson masses, meson and baryon masses are performed on a lattice of spatial size
Physical Review D | 2004
A.P. Bakulev; N. G. Stefanis; W. Schroers; K. Passek-Kumericki
Physical Review Letters | 2005
Constantia Alexandrou; Ph. de Forcrand; H. Neff; John W. Negele; W. Schroers; A. Tsapalis
L\simeq 2.5
Physical Review D | 2011
Sara Collins; R. Horsley; Frank Winter; D. Pleiter; M. Göckeler; A. Nobile; W. Schroers; Y. Nakamura; P.E.L. Rakow; G. Schierholz; J. M. Zanotti; A. Schäfer; H. Stüben; Ph. Hagler
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