0000000000585682

AUTHOR

V Lisin

showing 5 related works from this author

Intermediate resonance excitation in the γp→pπ0π0 reaction

2005

The helicity dependence of the total cross section for the (gamma) over right arrow(p) over right arrow -> p pi(0)pi(0) reaction has been measured for the first time at incident photon energies from 400 to 800 MeV. The measurement, performed at the tagged photon beam facility of the MAMI accelerator in Mainz, used the large acceptance detector DAPHNE and a longitudinally polarized frozen-spin target. This channel is found to be excited predominantly when the photon and proton have a parallel spin orientation, most likely due to the intermediate production of the D-13(1520) resonance. However, the contribution of the antiparallel spin configuration, arising from other reaction mechanisms, is…

PhysicsNuclear and High Energy PhysicsPhotonProton010308 nuclear & particles physicsResonance01 natural sciencesHelicityCross section (geometry)Nuclear physicsExcited state0103 physical sciencesPhysics::Accelerator PhysicsAtomic physicsNuclear Experiment010306 general physicsNucleonSpin (physics)Physics Letters B
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First measurement of the helicity-dependent γ p↦pη differential cross-section

2003

The helicity dependence of the (γ) over right arrow(p) over right arrow -+ peta reaction has been measured for the first time at a center-of-mass angle theta(eta)*= 70degrees in the photon energy range from 780 MeV to 790 MeV. The experiment, performed at the Mainz microtron MAMI, used a 4pi-detector system, a circularly polarized, tagged photon beam. and a longitudinally polarized frozen-spin target. The helicity 3/2 cross-section is found to be small and the results for helicity 1/2 agree with predictions from the MAID analysis.

PhysicsScattering cross-sectionNuclear and High Energy PhysicsParticle physics010308 nuclear & particles physicsHadronPhoton energy01 natural sciencesHelicityNuclear physics0103 physical sciencesPhysics::Accelerator PhysicsNuclear fusionPhoton beamNuclear Experiment010306 general physicsMicrotronThe European Physical Journal A
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Helicity dependence of the γ→p→→nπ+π0 reaction in the second resonance region

2003

The helicity dependence of the total cross section for the (γ) over right arrow(p) over right arrownpi(+) pi(0) reaction has been measured for the first time at incident photon energies from 400 to 800 MeV The measurement was performed with the large acceptance detector DAPHNE at the tagged photon beam facility of the MAMI accelerator in Mainz. This channel is found to be excited predominantly when the photon and proton have a parallel spin orientation, due to the intermediate production of the D-13 resonance. (C) 2002 Elsevier Science B.V. All rights reserved.

PhysicsNuclear and High Energy PhysicsPhotonProton010308 nuclear & particles physicsNuclear TheoryResonance01 natural sciencesHelicityCross section (geometry)Nuclear physicsExcited state0103 physical sciencesPiPhysics::Accelerator PhysicsAtomic physicsNuclear Experiment010306 general physicsSpin (physics)Physics Letters B
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"Table 1" of "Compton scattering by the proton through Theta(CMS) = 75-degrees and 90-degrees in the Delta resonance region"

1997

No description provided.

Single Differential Cross SectionPhotoproductionElasticGAMMA P --> P GAMMA1.126-1.283ExclusiveGAMMA P --> GAMMA PDSIG/DOMEGA
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"Table 2" of "Compton scattering by the proton through Theta(CMS) = 75-degrees and 90-degrees in the Delta resonance region"

1997

No description provided.

Single Differential Cross SectionPhotoproductionElasticGAMMA P --> P GAMMAExclusiveGAMMA P --> GAMMA P1.162-1.341DSIG/DOMEGA
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