Lattice calculation of the strangeness magnetic moment of the nucleon

Dong, S.J.; Liu, K.F.; Williams, Anthony G.

doi:10.1103/PhysRevD.58.074504

Lattice calculation of the strangeness magnetic moment of the nucleon

Dec, 1997

9 pages

Published in:

Phys.Rev.D 58 (1998) 074504

e-Print:

hep-ph/9712483 [hep-ph]

DOI:

10.1103/PhysRevD.58.074504

Report number:

UK-97-23,
ADP-97-55-T281

View in:

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Abstract:

We report on a lattice QCD calculation of the strangeness magnetic moment of the nucleon. Our result is

G_M^s(0) = - 0.36 \pm 0.20

. The sea contributions from the u and d quarks are about 80% larger. However, they cancel to a large extent due to their electric charges, resulting in a smaller net sea contribution of

- 0.097 \pm 0.037 \mu_N

to the nucleon magnetic moment. As far as the neutron to proton magnetic moment ratio is concerned, this sea contribution tends to cancel out the cloud-quark effect from the Z-graphs and result in a ratio of

-0.68 \pm 0.04

which is close to the SU(6) relation and the experiment. The strangeness Sachs electric mean-square radius

< r_s^2>_E

is found to be small and negative and the total sea contributes substantially to the neutron electric form factor.

Note:

10 pages, 5 figures, LaTex, UK/97-23, ADP-97-55/T281

fermion: lattice field theory
gauge field theory: SU(3)
nucleon: magnetic moment
nucleon: strangeness
quark: sea
nucleon: form factor
magnetic moment: ratio
numerical calculations: Monte Carlo
interpretation of experiments

References(29)

Figures(0)

An Investigation of the Spin Structure of the Proton in Deep Inelastic Scattering of Polarized Muons on Polarized Protons

European Muon

Collaboration

•

J. Ashman
(
- Sheffield U.
)

et al.

- Nucl.Phys.B 328 (1989) 1,
•
DOI:
- 10.1016/0550-3213(89)90089-8

Measurement of the spin dependent structure function $g_1(x)$ of the proton

Spin Muon (SMC)

Collaboration

•

D. Adams

et al.

- Phys.Lett.B 329 (1994) 399-406,
- Phys.Lett.B 339 (1994) 332-333 (erratum)
•
e-Print:
- hep-ph/9404270
•
DOI:
- 10.1016/0370-2693(94)90793-5

Precision measurement of the proton spin structure function g1(p)

E143

Collaboration

•

K. Abe

et al.

- Phys.Rev.Lett. 74 (1995) 346-350,
•
DOI:
- 10.1103/PhysRevLett.74.346

Sigma term update

- Phys.Lett.B 253 (1991) 252-259
•
DOI:
- 10.1016/0370-2693(91)91393-A

The Zweig Rule and the pi n Sigma Term

T.P. Cheng
(
- Missouri U., St. Louis
)

- Phys.Rev.D 13 (1976) 2161
•
DOI:
- 10.1103/PhysRevD.13.2161

Chiral Symmetry and the Higgs Nucleon Coupling

T.P. Cheng
(
- Missouri U., St. Louis and
- Princeton, Inst. Advanced Study
)

- Phys.Rev.D 38 (1988) 2869
•
DOI:
- 10.1103/PhysRevD.38.2869

Form-factor of the sigma term

- Phys.Lett.B 253 (1991) 260-264
•
DOI:
- 10.1016/0370-2693(91)91394-B

Quark Masses

J. Gasser
(
- Bern U.
)
,
H. Leutwyler
(
- Bern U.
)

- Phys.Rept. 87 (1982) 77-169
•
DOI:
- 10.1016/0370-1573(82)90035-7

Measurement of the proton's neutral weak magnetic form-factor

SAMPLE

Collaboration

•

B. Mueller

et al.

- Phys.Rev.Lett. 78 (1997) 3824-3827
•
e-Print:
- nucl-ex/9702004
•
DOI:
- 10.1103/PhysRevLett.78.3824

QCD equalities for baryon current matrix elements

Derek B. Leinweber
(
- Washington U., Seattle
)

- Phys.Rev.D 53 (1996) 5115-5124
•
e-Print:
- hep-ph/9512319
•
DOI:
- 10.1103/PhysRevD.53.5115

Essential strangeness in nucleon magnetic moments

Derek B. Leinweber
(
- Ohio State U.
)

- Nucl.Phys.A 585 (1995) 341C-342C
•
e-Print:
- nucl-th/9407039
•
DOI:
- 10.1016/0375-9474(94)00597-G

Strange form-factors of baryons

Soon-Tae Hong
(
- Seoul Natl. U.
)
,
Byung-Yoon Park
(
- Chungnam Natl. U.
)
,
Dong-Pil Min
(
- Seoul Natl. U.
)

- Phys.Lett.B 414 (1997) 229-236
•
e-Print:
- nucl-th/9706008
•
DOI:
- 10.1016/S0370-2693(97)01159-3

Strangeness in magnetic moments

S.T. Hong
(
- SUNY, Stony Brook and
- Chonnam Natl. U.
)
,
B.Y. Park
(
- SUNY, Stony Brook and
- Chonnam Natl. U.
)

- Nucl.Phys.A 561 (1993) 525-541
•
DOI:
- 10.1016/0375-9474(93)90063-4

Strange hadronic loops of the proton: A Quark model calculation

Paul Geiger
(
- Carnegie Mellon U.
)
,
Nathan Isgur
(
- Jefferson Lab
)

- Phys.Rev.D 55 (1997) 299-310
•
e-Print:
- hep-ph/9610445
•
DOI:
- 10.1103/PhysRevD.55.299

Stranger Than Fiction: The Strangeness Radius and Magnetic Moment of the Nucleon

R.L. Jaffe
(
- MIT, LNS
)

- Phys.Lett.B 229 (1989) 275-279
•
DOI:
- 10.1016/0370-2693(89)91171-4

Electromagnetic, axial and strange currents in the Skyrme model: Effects of symmetry breaking

- Phys.Rev.D 43 (1991) 869-884
•
DOI:
- 10.1103/PhysRevD.43.869

Stranger still: Kaon loops and strange quark matrix elements of the nucleon

M.J. Musolf
(
- Old Dominion U. and
- Jefferson Lab
)
,
M. Burkardt
(
- MIT, LNS
)

- Z.Phys.C 61 (1994) 433-440
•
e-Print:
- hep-ph/9301229
•
DOI:
- 10.1007/BF01413182

Stranger in the light: The Strange vector form-factors of the nucleon

- Phys.Rev.C 50 (1994) 3108-3121
•
e-Print:
- hep-ph/9408326
•
DOI:
- 10.1103/PhysRevC.50.3108

The strangeness radius and magnetic moment of the nucleon revisited

H.W. Hammer
(
- Mainz U., Inst. Kernphys.
)
,
Ulf-G. Meissner
(
- Bonn U.
)
,
D. Drechsel
(
- Mainz U., Inst. Kernphys.
)

- Phys.Lett.B 367 (1996) 323-328
•
e-Print:
- hep-ph/9509393
•
DOI:
- 10.1016/0370-2693(95)01409-8

Top quark and Higgs boson masses: Interplay between infrared and ultraviolet physics

Barbara Schrempp
(
- Kiel U. and
- DESY
)
,
Michael Wimmer
(
- Kiel U.
)

- Prog.Part.Nucl.Phys. 37 (1996) 1-90,
- In *Progress in particle and nuclear physics, vol. 37* 1-90
•
e-Print:
- hep-ph/9606386
•
DOI:
- 10.1016/0146-6410(96)00059-2

Flavor singlet g(A) from lattice QCD

- Phys.Rev.Lett. 75 (1995) 2096-2099
•
e-Print:
- hep-ph/9502334
•
DOI:
- 10.1103/PhysRevLett.75.2096

Pi N sigma term, anti-s s in nucleon, and scalar form-factor: A Lattice study

- Phys.Rev.D 54 (1996) 5496-5500
•
e-Print:
- hep-ph/9602259
•
DOI:
- 10.1103/PhysRevD.54.5496

Electromagnetic Properties of Nucleons From Lattice {QCD}

- Phys.Lett.B 234 (1990) 121-126,
- Phys. Lett. B234 (1990) 121-126 and Vancouver TRIUMF - TRI-PP-89-061 (89,rec.Oct.) 13 p
•
DOI:
- 10.1016/0370-2693(90)92014-A

Lattice calculation of the strangeness magnetic moment of the nucleon

Citations per year

An Investigation of the Spin Structure of the Proton in Deep Inelastic Scattering of Polarized Muons on Polarized Protons

Measurement of the spin dependent structure function $g_1(x)$ of the proton

Precision measurement of the proton spin structure function g1(p)

Sigma term update

The Zweig Rule and the pi n Sigma Term

Chiral Symmetry and the Higgs Nucleon Coupling

Form-factor of the sigma term

Quark Masses

Measurement of the proton's neutral weak magnetic form-factor

QCD equalities for baryon current matrix elements

Essential strangeness in nucleon magnetic moments

Strange form-factors of baryons

Strangeness in magnetic moments

Strange hadronic loops of the proton: A Quark model calculation

Stranger Than Fiction: The Strangeness Radius and Magnetic Moment of the Nucleon

Electromagnetic, axial and strange currents in the Skyrme model: Effects of symmetry breaking

Stranger still: Kaon loops and strange quark matrix elements of the nucleon

Stranger in the light: The Strange vector form-factors of the nucleon

The strangeness radius and magnetic moment of the nucleon revisited

Top quark and Higgs boson masses: Interplay between infrared and ultraviolet physics

Flavor singlet g(A) from lattice QCD

Pi N sigma term, anti-s s in nucleon, and scalar form-factor: A Lattice study

Electromagnetic Properties of Nucleons From Lattice {QCD}

Chiral limit of nucleon lattice electromagnetic form-factors

Nucleon axial form-factor from lattice QCD