Strange magnetic form factor of the proton at Q**2 = 0.23- GeV**2 - INSPIRE

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Strange magnetic form factor of the proton at Q2 = 0.23- GeV2

P. Wang
(
- Jefferson Lab
)
,
D.B. Leinweber
(
- Adelaide U.
)
,
A.W. Thomas
(
- Jefferson Lab and
- William-Mary Coll.
)
,
R.D. Young
(
- Argonne, PHY
)

Jul, 2008

11 pages

Published in:

Phys.Rev.C 79 (2009) 065202

e-Print:

0807.0944 [hep-ph]

DOI:

10.1103/PhysRevC.79.065202

Report number:

JLAB-THY-08-840,
ADP-08-07-T667

View in:

reference search67 citations

Citations per year

Abstract: (arXiv)

We determine the

u

and

d

quark contributions to the proton magnetic form factor at finite momentum transfer by applying chiral corrections to quenched lattice data. Heavy baryon chiral perturbation theory is applied at next to leading order in the quenched, and full QCD cases for the valence sector using finite range regularization. Under the assumption of charge symmetry these values can be combined with the experimental values of the proton and neutron magnetic form factors to deduce a relatively accurate value for the strange magnetic form factor at

Q^2=0.23

GeV

^2

, namely

G_M^s=-0.034 \pm 0.021

\mu_N

.

12.39.Fe
13.40.-f
11.10.Gh
14.20.Dh
p: form factor
form factor: magnetic
form factor: strangeness
up
down
perturbation theory: chiral

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