Magnetic Moment of the Proton

Estermann, I.; Frisch, Raphael; Stern, O.

doi:10.1038/132169a0

Cited by 48 publications

(41 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The effort of understanding the nucleonic structure and dynamics has continued for generations up to this day. The first clue that the nucleons themselves are not point-like, elementary particles came from Otto Stern's measurements of the magnetic moment of the proton and the deuteron in 1933 [4]. These measurements showed drastic deviation from the expected value in the Dirac equation for a "point" spin 1/2 particle, implying that protons and neutrons are composite and have internal structure.…”

Section: Introductionmentioning

confidence: 99%

Proton form factor ratio, μpGEP/GMP from double spin asymmetry

Liyanage¹,

Pushpakumari²

2013

View full text Add to dashboard Cite

Array (BETA), elastic measurements were carried out in parallel. The elastic double spin asymmetry allows one to extract the proton electric to magnetic form factorIn addition to the coincidence data, inclusively scattered electrons from the polarized ammonia target were detected by HMS, which allows to measure the beam-target asymmetry in the elastic region with the target spin nearly perpendicular to the momentum transfer,This alternative measurement of G

show abstract

Section: Introductionmentioning

confidence: 99%

Proton form factor ratio, μpGEP/GMP from double spin asymmetry

Liyanage¹,

Pushpakumari²

2013

View full text Add to dashboard Cite

show abstract

“…In the Breit frame of the elastic electron-nucleon scattering 1 the electromagnetic structure of the nucleon can be described by two functions, the Sachs FF's [3]: G E(M) (Q 2 ) = E(M) ( r) e i q· r d 3 r a e-mail: evaristo.cisbani@iss.infn.it 1 In the Breit frame the initial and the scattered nucleons have opposite 3-momenta (no energy transferred) which implies…”

Section: Introductionmentioning

confidence: 99%

Overview of nucleon form factor experiments with 12 GeV at Jefferson Lab

Cisbani

2014

EPJ Web of Conferences

View full text Add to dashboard Cite

Abstract. Since the R. Hofstadter pioneering experiments in the '50s, the measurements of the electromagnetic space-like nucleon form factors (FF's) have been a precious source of information for the understanding of the internal structure of the nucleons.In the last 15 years, the polarization transfer experiments at the Thomas Jefferson National Accelerator Facility (JLab) have undermined our view of the mechanism of the electron scattering and renewed critical interest in the FF measurements.In the coming years, JLab, with its upgraded 12 GeV polarized, high intensity, electron beam combined to new targets and readout equipments, will offer unprecedented opportunities to extend the current proton and neutron FF's measurements to higher momentum transfer Q 2 and to improve statistical and uncertainties at lower Q 2 , where the nucleon size can be accurately investigated.The measurements at high Q 2 will provide also new insights on the elusive quark orbital angular momenta, will contribute to constraint two of the nucleon Generalized Parton Distributions that are expected to describe more consistently the nucleon structure, and in general will test the validity of quite a few fundamental nucleon models in a region of transition between perturbative and non perturbative regimes.A selection of the relevant properties of the FF's, and the main results of JLab are shortly reviewed; the new proposed and approved experiments on FF's at JLab are presented addressing some key details, the expected experimental achievements and the new equipment designed for them.

show abstract

“…It has been investigated for many decades, from the measurement of the anomalous magnetic moment of the nucleon in the 1930's [ 2], the radius in the 1950's [ 3], to the discovery of point-like constituents in the 1960's [ 4].…”

Section: Introductionmentioning

confidence: 99%