Study of two-photon corrections in the pp{yields}e{sup +}e{sup -} process: Hard rescattering mechanism

Journal Article · Sun May 01 00:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.094021· OSTI ID:21541608

Guttmann, Julia; Vanderhaeghen, Marc ^[1]; Kivel, Nikolai ^[1]

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1. Institut fuer Kernphysik, Johannes Gutenberg-Universitaet, D-55099 Mainz (Germany)

We investigate the two-photon corrections to the process pp{yields}e{sup +}e{sup -} at large momentum transfer, aimed to access the timelike nucleon form factors. We estimate the two-photon corrections using a hard rescattering mechanism, which has already been used to calculate the corresponding corrections to elastic electron-proton scattering. Using different nucleon distribution amplitudes, we find that the two-photon corrections to the pp{yields}e{sup +}e{sup -} cross sections in the momentum transfer range 5-30 GeV{sup 2} is below the 1% level.

• OSTI ID: 21541608
• Journal Information: Physical Review. D, Particles Fields, Vol. 83, Issue 9; Other Information: DOI: 10.1103/PhysRevD.83.094021; (c) 2011 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
COMPUTERIZED SIMULATION
CORRECTIONS
CROSS SECTIONS
DISTRIBUTION
ELECTRON-POSITRON INTERACTIONS
ELECTRON-PROTON INTERACTIONS
ELECTRONS
FORM FACTORS
MOMENTUM TRANSFER
NUCLEONS
PROTON-PROTON INTERACTIONS
RESCATTERING
BARYON-BARYON INTERACTIONS
BARYONS
DIMENSIONLESS NUMBERS
ELECTRON-NUCLEON INTERACTIONS
ELEMENTARY PARTICLES
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LEPTONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PROTON-NUCLEON INTERACTIONS
SCATTERING
SIMULATION