Search results for "virtual photon"

showing 10 items of 30 documents

The frontiers of the virtual photons program at MAMI

2012

The most recent results and the future physics program of the high precision electron-scattering experiment at MAMI are briefly outlined. The A1 high-resolution spectrometers facility allows for a unique quality of virtual photon experiments. High precision form factor measurements, few-baryon systems highresolution structure studies and the innovative way in the search of dark photons illustrate the interplay between such diverse fields as precision atomic physics, nuclear astrophysics and astroparticle physics, where hadron physics plays a central and connecting role.

Astroparticle physicsPhysicsParticle physicsPhotonSpectrometerPhysicsQC1-999Form factor (quantum field theory)Virtual particleEngineering physicsHadron physicsNuclear astrophysicsvirtual photon; form factor measurements; dark photon; precision spectroscopy of light hypernucleiNuclear Experiment
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Edwin Power and the birth of dressed atoms

2006

This paper reviews the main results of a twenty year-long international collaborative effort led by the late E.A. Power on the physics of atoms dressed by the vacuum electromagnetic field. The presentation uses the historical, rather than the logical, order of development. This permits one to shed light on the influence of Power's personality and human qualities on the birth and evolution of the notion of the dressed atom, which is central to modern non-relativistic QED.

Condensed Matter::Quantum GasesPower (social and political)PhysicsTheoretical physicsvirtual photonretardation effects.Quantum mechanicsAtomNonrelativistic quantum electrodynamicGeneral Physics and AstronomyPhysics::Atomic Physics
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"Table 2" of "The spin-dependent structure function g1(x) of the deuteron from polarized deep-inelastic muon scattering."

1997

The virtual-photon deuteron cross section asymmetry A1 from the combined SMC data. Statistical errors only.

InclusiveNuclear TheoryVirtual Photon AsymmetryNeutral CurrentDeep Inelastic ScatteringNuclear ExperimentA1Muon productionMU+ DEUT --> MU+ XStatistics::Computation
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"Table 1" of "A New measurement of the spin dependent structure function g1(x) of the deuteron"

1995

Results on the virtual photon deuteron asymmetry.

InclusiveNuclear TheoryVirtual Photon AsymmetryNeutral CurrentDeep Inelastic ScatteringPhysics::OpticsHigh Energy Physics::ExperimentNuclear ExperimentA1Muon productionMU+ DEUT --> MU+ X
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"Table 1" of "The Spin-dependent Structure Function of the Proton g_1^p and a Test of the Bjorken Sum Rule"

2017

Values of $A_1^p$ and $g_1^p$ as a function of $x$ with corresponding average values of $Q^2$.

InclusiveSpin Dependent Structure FunctionG1Virtual Photon AsymmetryNeutral CurrentDeep Inelastic Scattering140180A1MU+ P --> MU+ XMuon production
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"Table 2" of "The Spin Structure Function $g_1^{\rm p}$ of the Proton and a Test of the Bjorken Sum Rule"

2016

Values of $A_1^{\rm p}$ and $g_1^{\rm p}$ for the 2011 COMPASS data at 200 GeV in $x$ bins averaged over $Q^2$.

InclusiveSpin Dependent Structure FunctionG1Virtual Photon AsymmetryNeutral CurrentDeep Inelastic ScatteringA1MU+ P --> MU+ XMuon production
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"Table 1" of "The Spin Structure Function $g_1^{\rm p}$ of the Proton and a Test of the Bjorken Sum Rule"

2016

Values of $A_1^{\rm p}$ and $g_1^{\rm p}$ for the 2011 COMPASS data at 200 GeV in ($x$, $Q^2$) bins.

InclusiveSpin Dependent Structure FunctionG1Virtual Photon AsymmetryNeutral CurrentDeep Inelastic ScatteringA1MU+ P --> MU+ XMuon production
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"Table 1" of "Spin asymmetry A(1)(d) and the spin-dependent structure function g1(d) of the deuteron at low values of x and Q**2."

2007

Measured values of A1 and G1 at mean values of X, Q**2 and Y.

InclusiveSpin Dependent Structure FunctionG1Virtual Photon AsymmetryNeutral CurrentDeep Inelastic ScatteringA1Muon productionMU+ DEUT --> MU+ X
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"Table 1" of "The Deuteron Spin-dependent Structure Function g1d and its First Moment"

2007

Measured values of A1 and G1 at mean values of X, Q**2.. For the first two data points the minimum Q**2 cut was reduced from 1 to 0.7 GeV**2.

InclusiveSpin Dependent Structure FunctionG1Virtual Photon AsymmetryNeutral CurrentDeep Inelastic ScatteringA1Muon productionMU+ DEUT --> MU+ X
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"Table 13" of "Measurement of the spin structure of the deuteron in the DIS region."

2005

Measured values of A1 and G1 as a function of X with the average values of Q**2 and Y.

InclusiveSpin Dependent Structure FunctionG1Virtual Photon AsymmetryNeutral CurrentDeep Inelastic ScatteringA1Muon productionMU+ DEUT --> MU+ X
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