Search results for "Photoproduct"

showing 10 items of 511 documents

Structure of pion photoproduction amplitudes

2018

We derive and apply the finite energy sum rules to pion photoproduction. We evaluate the low energy part of the sum rules using several state-of-the-art models. We show how the differences in the low energy side of the sum rules might originate from different quantum number assignments of baryon resonances. We interpret the observed features in the low energy side of the sum rules with the expectation from Regge theory. Finally, we present a model, in terms of a Regge-pole expansion, that matches the sum rules and the high-energy observables.

Particle physicsStructure (category theory)FOS: Physical sciences01 natural sciencesPOLARIZED PHOTONSCHARGED PIONSPionHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciencesT DISPERSION-RELATIONSPhysics and Astronomy (miscellaneous); high energy; pion photoproduction010306 general physicsCOMPTON-SCATTERINGPhysicsREGGE-POLES010308 nuclear & particles physicsObservablePI0 PHOTOPRODUCTIONQuantum numberBaryonRegge theoryHigh Energy Physics - PhenomenologyAmplitudeBARYON RESONANCESPhysics and AstronomyPI-0 PHOTOPRODUCTIONMESON PHOTOPRODUCTIONENERGY SUM-RULESEnergy (signal processing)
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"Table 1" of "Backward electroproduction of pi0 mesons on protons in the region of nucleon resonances at four momentum transfer squared Q**2 = 1.0-Ge…

2005

Cross section SIG(T) + EPSILON*SIG(L) for COS(THETA*) = -0.975.

Photoproduction1.11-1.95ComputingMilieux_THECOMPUTINGPROFESSIONElectron productionTheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITYE- P --> E- P PI0ComputingMethodologies_SYMBOLICANDALGEBRAICMANIPULATIONMathematicsofComputing_NUMERICALANALYSISExclusiveInformationSystems_MISCELLANEOUSD2SIG/DOMEGADouble Differential Cross SectionGAMMA* P --> P PI0
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"Table 9" of "Backward electroproduction of pi0 mesons on protons in the region of nucleon resonances at four momentum transfer squared Q**2 = 1.0-Ge…

2005

Cross section SIG(TT) for COS(THETA*) = -0.975.

Photoproduction1.11-1.95Electron productionE- P --> E- P PI0ExclusiveD2SIG/DOMEGADouble Differential Cross SectionGAMMA* P --> P PI0
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"Table 5" of "Backward electroproduction of pi0 mesons on protons in the region of nucleon resonances at four momentum transfer squared Q**2 = 1.0-Ge…

2005

Cross section SIG(TL) for COS(THETA*) = -0.975.

Photoproduction1.11-1.95Electron productionE- P --> E- P PI0ExclusiveD2SIG/DOMEGADouble Differential Cross SectionGAMMA* P --> P PI0
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"dcs09" of "Photoproduction of the omega meson off the proton near threshold"

2022

Differential cross section at W= 1.7891 GeV

PhotoproductionAstrophysics::High Energy Astrophysical PhenomenaExclusiveHigh Energy Physics::ExperimentGAMMA P --> OMEGA PNuclear Experiment
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"dcs02" of "Photoproduction of the omega meson off the proton near threshold"

2022

Differential cross section at W= 1.7319 GeV

PhotoproductionAstrophysics::High Energy Astrophysical PhenomenaExclusiveHigh Energy Physics::ExperimentGAMMA P --> OMEGA PNuclear Experiment
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"dcs13" of "Photoproduction of the omega meson off the proton near threshold"

2022

Differential cross section at W= 1.8192 GeV

PhotoproductionAstrophysics::High Energy Astrophysical PhenomenaExclusiveHigh Energy Physics::ExperimentGAMMA P --> OMEGA PNuclear Experiment
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"dcs04" of "Photoproduction of the omega meson off the proton near threshold"

2022

Differential cross section at W= 1.7490 GeV

PhotoproductionAstrophysics::High Energy Astrophysical PhenomenaExclusiveHigh Energy Physics::ExperimentGAMMA P --> OMEGA PNuclear Experiment
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"dcs05" of "Photoproduction of the omega meson off the proton near threshold"

2022

Differential cross section at W= 1.7568 GeV

PhotoproductionAstrophysics::High Energy Astrophysical PhenomenaExclusiveHigh Energy Physics::ExperimentGAMMA P --> OMEGA PNuclear Experiment
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"dcs19" of "Photoproduction of the omega meson off the proton near threshold"

2022

Differential cross section at W= 1.8657 GeV

PhotoproductionAstrophysics::High Energy Astrophysical PhenomenaExclusiveHigh Energy Physics::ExperimentGAMMA P --> OMEGA PNuclear Experiment
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