The Strange Quark Contribution to the Proton's Magnetic Moment

Abstract

We report a new determination of the strange quark contribution to the proton's magnetic form factor at a four-momentum transfer Q2 = 0.1 (GeV/c)^2 from parity-violating e-p elastic scattering. The result uses a revised analysis of data from the SAMPLE experiment which was carried out at the MIT-Bates Laboratory. The data are combined with a calculation of the proton's axial form factor GAe to determine the strange form factor GMs(Q2=0.1)=0.37 +- 0.20 +- 0.26 +- 0.07. The extrapolation of GMs to its Q2=0 limit and comparison with calculations is also discussed.

6 pages, 1 figure, submitted to Phys. Lett. B

References in corpus (30)

• Baryons as non-topological chiral solitons
• Intermediate-Energy Semileptonic Probes of the Hadronic Neutral Current
• Baryons as Chiral Solitons in the Nambu--Jona-Lasinio Model
• Stochastic Estimation with $Z_2$ Noise
• Measurement of the Proton's Neutral Weak Magnetic Form Factor
• The Spin Structure of the Nucleon
• Measurement of the Neutral Weak Form Factors of the Proton
• The Nucleon Anapole Moment and Parity-Violating ep Scattering
• Parity Violation in Elastic Electron-Proton Scattering and the Proton's Strange Magnetic Form Factor
• New Measurement of Parity Violation in Elastic Electron-Proton Scattering and Implications for Strange Form Factors
• Lattice Calculation of the Strangeness Magnetic Moment of the Nucleon
• Non-Abelian bosonization of the frustrated antiferromagnetic spin-1/2 chain
• The Strangeness Radius and Magnetic Moment of the Nucleon Revisited
• The nucleon's strange electromagnetic and scalar matrix elements
• Stranger Still: Kaon Loops and Strange Quark Matrix Elements of the Nucleon
• Nucleon Structure and Parity-Violating Electron Scattering
• A Lattice QCD Analysis of the Strangeness Magnetic Moment of the Nucleon
• Strange magnetism in the nucleon
• Locality of the Strange Sea in the Nucleon
• K\bar{K}-Continuum and Isoscalar Nucleon Form Factors
• Stranger in the Light: The Strange Vector Form Factors of the Nucleon
• Spectral Content of Isoscalar Nucleon Form Factors
• Dispersion Analysis of the Strange Vector Form Factors of the Nucleon
• Nucleon Strangeness and Unitarity
• K^* Mesons and Nucleon Strangeness
• Parity-Violating Pion-Nucleon Coupling h_{πNN}^{(1)} from π^+ Electroproton Production Near the Threshold
• KN Scattering and the Nucleon Strangeness Radius
• What Do We Know About the Strange Magnetic Radius?
• Nucleon Vector Strangeness Form Factors: Multi-pion Continuum and the OZI Rule
• Strange Mesonic Transition Form Factor in the Chiral Constituent Quark Model

Cited by in corpus (110)

• Chiral Perturbation Theory and Baryon Properties
• Equivalence Principle Violations and Couplings of a Light Dilaton
• Strange Quark Contributions to Parity-Violating Asymmetries in the Forward G0 Electron-Proton Scattering Experiment
• Nucleon electromagnetic form factors
• Precision Measurements of the Nucleon Strange Form Factors at Q^2 ~0.1 GeV^2
• Precision Measurement of the Weak Charge of the Proton
• Weak charge form factor and radius of 208Pb through parity violation in electron scattering
• Evidence for Strange Quark Contributions to the Nucleon's Form Factors at $Q^2$ = 0.108 (GeV/c)${}^2$
• Parity-Violating Electron Scattering from 4He and the Strange Electric Form Factor of the Nucleon
• Precise determination of the strangeness magnetic moment of the nucleon
• Charged Current Neutrino Nucleus Interactions at Intermediate Energies
• Constraints on the Nucleon Strange Form Factors at Q^2 ~ 0.1 GeV^2
• First Determination of the Weak Charge of the Proton
• Measurement of Strange Quark Contributions to the Vector Form Factors of the Proton at Q**2=0.22 (GeV/c)**2
• Extracting nucleon strange and anapole form factors from world data
• Surprises in threshold antikaon-nucleon physics
• The SAMPLE Experiment and Weak Nucleon Structure
• Strange Electric Form Factor of the Proton
• Testing the Standard Model by precision measurement of the weak charges of quarks
• Hadronic Parity Violation: a New View through the Looking Glass
• The $s\bar{s}$ component of the proton and the strangeness magnetic moment
• Electroweak Measurements of Neutron Densities in CREX and PREX at JLab, USA
• Inclusive neutrino scattering off deuteron from threshold to GeV energies
• High-precision calculation of the strange nucleon electromagnetic form factors
• Flavor decomposition of the nucleon electromagnetic form factors
• Neutral weak current two-body contributions in inclusive scattering from ${}^{12}$C
• Nucleon strangeness form factors from N_f=2+1 clover fermion lattice QCD
• Isospin violation in the vector form factors of the nucleon
• Strange magnetic form factor of the proton at $Q^2=0.23$ GeV${}^2$
• Strange Quark Magnetic Moment of the Nucleon at Physical Point
• Strangeness spin, magnetic moment and strangeness configurations of the proton
• Discovery potential of hidden charm baryon resonances via photoproduction
• Evidence for the Absence of Gluon Orbital Angular Momentum in the Nucleon
• Two-Photon-Exchange Correction to Parity-Violating Elastic Electron-Proton Scattering
• Neutral current neutrino-nucleus interactions at intermediate energies
• The P2 Experiment - A future high-precision measurement of the electroweak mixing angle at low momentum transfer
• Hadron structure at low Q^2
• The Two-Photon-Exchange and γZ-Exchange Corrections to parity-Violating Elastic Electron-Proton Scattering
• Neutrino neutral-current elastic scattering on 12C
• Strange Quark Contribution to the Vector and Axial Form Factors of the Nucleon: Combined Analysis of G0, HAPPEx, and Brookhaven E734 Data
• Nucleon strange electromagnetic form factors
• Measurement of Parity-Violating Asymmetry in Electron-Deuteron Inelastic Scattering
• The $qqqq\bar{q}$ components and hidden flavor contributions to the baryon magnetic moments
• The strangeness form factors of the proton
• Strange and singlet form factors of the nucleon: Predictions for G0, A4, and HAPPEX-II experiments
• Two-component model for the axial form factor of the nucleon
• Measurement of the Parity-Violating Asymmetry in Electron-Deuteron Scattering in the Nucleon Resonance Region
• Strange electromagnetic form factors of the nucleon with $N_f=2+1$ $\mathcal{O}(a)$-improved Wilson fermions
• Spin and Flavor Strange Quark Content of the Nucleon
• Calculation of fermion loops for ${\eta }^{\prime }$ and nucleon scalar and electromagnetic form factors
• Sum rules for baryon decuplet magnetic moments
• Strange magnetic form factor of nucleon in heavy baryon chiral effective approach at next to leading order
• Nucleon relativistic polarization and magnetization distributions
• Parity-Violating Electron-Deuteron Scattering with a Twist
• Axial-vector form factors for the low lying octet baryons in the chiral quark constituent model
• Relativistic Green's function approach to parity-violating quasielastic electron scattering
• Parity-violating aysmmetries in elastic $\vec{e}p$ scattering in the chiral quark-soliton model: Comparison with A4, G0, HAPPEX and SAMPLE
• On the two-boson exchange corrections to parity-violating elastic electron-proton scattering
• Determination of the strange nucleon form factors
• Form factors and other measures of strangeness in the nucleon
• A high power liquid hydrogen target for the Mainz A4 parity violation experiment
• Strange form factors of the nucleon in a two-component model
• Strangeness in the proton and N*(1535)
• Strange nucleon form factors: Solitonic approach to $G_M^s$, $G_E^s$, ${\tilde{G}}_A^p$ and ${\tilde{G}}_A^n$ and comparison with world data
• Contribution of Two-Boson-Exchange with $\Delta (1232)$ Excitation to Parity-Violating Elastic Electron-Proton Scattering
• Strange form factors of nucleon with nonlocal chiral effective Lagrangian
• Strangeness content of the nucleon in quasielastic neutrino-nucleus reactions
• Charge and magnetization densities in transverse coordinate and impact parameter space
• Strange form factors and Chiral Perturbation Theory
• Strangeness magnetic form factor of the proton in the extended chiral quark model
• Isospin breaking in the vector current of the nucleon
• Neutral Weak Form Factors of Proton and Neutron
• Measuring the surface thickness of the weak charge density of nuclei
• Nucleon structure functions and longitudinal spin asymmetries in the chiral quark constituent model
• The full weak charge density distribution of 48Ca from parity violating electron scattering
• Parity violating asymmetry with nuclear medium effects in deep inelastic $\vec{e}$ scattering
• Can the meson cloud explain the nucleon strangeness?
• Electromagnetic and gravitational form factors in simulated QED and Yukawa model
• Nucleon form factors and parton distributions in nonlocal chiral effective theory
• Today's View on Strangeness
• Pure sea-quark contributions to the magnetic form factors of $\Sigma$ baryons
• Don't Forget to Measure $\Delta s$
• The strangeness form factors of the proton within nonrelativistic constituent quark model revisited
• Quark flavor distribution functions for the octet baryons in the chiral quark constituent model
• Strangeness and Chiral Symmetry Breaking
• Twist-four Corrections to Parity-Violating Electron-Deuteron Scattering
• Electromagnetic and Axial-Vector Form Factors of the Quarks and Nucleon
• The $qqqq\bar{q}$ components and the magnetic moments of the charmed and the bottomed baryons
• Flavor content of nucleon form factors in a VMD approach
• Heavy-quark contribution to the proton's magnetic moment
• Flux-integrated semiexclusive cross sections for charged-current quasielastic and neutral-current elastic neutrino scattering off ${}^{40}$Ar and a sterile neutrino oscillation study
• Generalized parton distributions for the lowest-lying octet baryons
• Strange magnetic moment of the nucleon and SU(3) breaking: group theoretical approach
• QCD Precision Measurements and Structure Function Extraction at a High Statistics, High Energy Neutrino Scattering Experiment: NuSOnG
• Long distance effects and strangeness in the nucleon
• Two-Boson Exchange Physics: A Brief Review
• Contributions to the nucleon form factors from bubble and tadpole diagrams
• Nuclear Magnetic Resonance with the Distant Dipolar Field
• Charge-symmetry-breaking nucleon form factors
• Early Results from the Qweak Experiment
• Electromagnetic radiative corrections in parity-violating electron-proton scattering
• Flavor content of nucleon form factors in the space- and time-like region
• Future Directions in Parity Violation: From Quarks to the Cosmos
• $D_s$ Asymmetry in Photoproduction
• Q-weak: First Direct Measurement of the Weak Charge of the Proton
• Weak Neutral Current Studies with Positrons
• Sea quark contributions to the electromagnetic form factors of $\Sigma$ hyperons
• Strangeness contributions to nucleon form factors
• Charge symmetry violation in the determination of strangeness form factors
• Proton strangeness form factors in (4,1) clustering configurations