Nucleon electromagnetic form factors from lattice QCD using 2+1 flavor domain wall fermions on fine lattices and chiral perturbation theory

We present a high-statistics calculation of nucleon electromagnetic form factors in Nf=2+1 lattice QCD using domain wall quarks on fine lattices, to attain a new level of precision in systematic and statistical errors. Our calculations use 323×64 lattices with lattice spacing a=0.084  fm for pion ma...

Full description

Bibliographic Details
Main Authors: Syritsyn, Sergey Nikolaevich (Contributor), Bratt, Jonathan D. (Contributor), Lin, Ming Fang (Contributor), Meyer, Harvey B. (Contributor), Negele, John W. (Contributor), Pochinsky, Andrew (Contributor), Procura, Massimiliano (Contributor), Engelhardt, M. (Author), Hagler, Ph (Author), Hemmert, T. R. (Author), Schroers, W. (Author)
Other Authors: Massachusetts Institute of Technology. Center for Theoretical Physics (Contributor), Massachusetts Institute of Technology. Department of Physics (Contributor)
Format: Article
Language:English
Published: American Physical Society, 2010-10-04T14:09:00Z.
Subjects:
Online Access:Get fulltext
LEADER 03212 am a22004573u 4500
001 58845
042 |a dc 
100 1 0 |a Syritsyn, Sergey Nikolaevich  |e author 
100 1 0 |a Massachusetts Institute of Technology. Center for Theoretical Physics  |e contributor 
100 1 0 |a Massachusetts Institute of Technology. Department of Physics  |e contributor 
100 1 0 |a Negele, John W.  |e contributor 
100 1 0 |a Syritsyn, Sergey Nikolaevich  |e contributor 
100 1 0 |a Bratt, Jonathan D.  |e contributor 
100 1 0 |a Lin, Ming Fang  |e contributor 
100 1 0 |a Meyer, Harvey B.  |e contributor 
100 1 0 |a Negele, John W.  |e contributor 
100 1 0 |a Pochinsky, Andrew  |e contributor 
100 1 0 |a Procura, Massimiliano  |e contributor 
700 1 0 |a Bratt, Jonathan D.  |e author 
700 1 0 |a Lin, Ming Fang  |e author 
700 1 0 |a Meyer, Harvey B.  |e author 
700 1 0 |a Negele, John W.  |e author 
700 1 0 |a Pochinsky, Andrew  |e author 
700 1 0 |a Procura, Massimiliano  |e author 
700 1 0 |a Engelhardt, M.  |e author 
700 1 0 |a Hagler, Ph.  |e author 
700 1 0 |a Hemmert, T. R.  |e author 
700 1 0 |a Schroers, W.  |e author 
245 0 0 |a Nucleon electromagnetic form factors from lattice QCD using 2+1 flavor domain wall fermions on fine lattices and chiral perturbation theory 
260 |b American Physical Society,   |c 2010-10-04T14:09:00Z. 
856 |z Get fulltext  |u http://hdl.handle.net/1721.1/58845 
520 |a We present a high-statistics calculation of nucleon electromagnetic form factors in Nf=2+1 lattice QCD using domain wall quarks on fine lattices, to attain a new level of precision in systematic and statistical errors. Our calculations use 323×64 lattices with lattice spacing a=0.084  fm for pion masses of 297, 355, and 403 MeV, and we perform an overdetermined analysis using on the order of 3600 to 7000 measurements to calculate nucleon electric and magnetic form factors up to Q2≈1.05  GeV2. Results are shown to be consistent with those obtained using valence domain wall quarks with improved staggered sea quarks, and using coarse domain wall lattices. We determine the isovector Dirac radius r1v, Pauli radius r2v and anomalous magnetic moment κv. We also determine connected contributions to the corresponding isoscalar observables. We extrapolate these observables to the physical pion mass using two different formulations of two-flavor chiral effective field theory at one loop: the heavy baryon small scale expansion and covariant baryon chiral perturbation theory. The isovector results and the connected contributions to the isoscalar results are compared with experiment, and the need for calculations at smaller pion masses is discussed. 
520 |a Alexander von Humboldt Foundation 
520 |a United States. Dept. of Energy (grant no. DE-FG02-94ER40818) 
520 |a United States. Depts .of Energy (grant no. DE-FG02-05ER25681) 
520 |a United States. Dept. of Energy (grant no. DE-FG02-96ER40965) 
520 |a Deutsche Forschungsgemeinschaft (grant no. SFB/TR 55) 
520 |a Deutsche Forschungsgemeinschaft (DFG) ("Origin and Structure of the Universe" Cluster of Excellence) 
546 |a en_US 
655 7 |a Article 
773 |t Physical Review D