Phenomenology of high-momentum-transfer elastic processes

Journal Article · Fri Sep 01 04:00:00 EDT 1978 · Phys. Rev., D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.18.1451· OSTI ID:7047471

Coon, D D; Gunion, J F; Tran Thanh Van, J; Blankenbecler, R

An analysis is carried out to extract the leading effective trajectories and residues in pp and ..pi../sup -/p elastic scattering. The results are compared with the predictions of the constituent-interchange model and the logarithmic dual model, which are shown to be the only two types of theory capable of providing a uniform link between backward and forward Regge regions and the fixed-angle region. The hypothesis of a smooth connection between forward and backward Regge regions puts strong contraints on a priori unrelated trajectories and residues. The possibility of a connection between the two models is discussed. As expected from interchange theory the extracted ..pi../sup -/p trajectory and residue behave quite differently than those for pp. The dual model seems to give the best overall description of the pp trajectory and residue functions while the ..pi..p results agree completely with the interchange predictions. The two model fits to pp elastic scattering at moderate energies (12--24 GeV) are used to extract an expected Pomeron term. The shape of the extracted diffractive contribution is strikingly similar to the recent CERN ISR differential cross sections which exhibit a dip at t = - 1.4 GeV/sup 2/ and a slow falloff in the large-t region.

• Research Organization: University of Pittsburgh, Pittsburgh, Pennsylvania 15213
• OSTI ID: 7047471
• Journal Information: Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 18:5; ISSN PRVDA
• Country of Publication: United States
• Language: English

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON-BARYON INTERACTIONS
CIM MODEL
COMPOSITE MODELS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
ELASTIC SCATTERING
ENERGY RANGE
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
INTERACTIONS
LINEAR MOMENTUM
LINEAR MOMENTUM TRANSFER
MATHEMATICAL MODELS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTON MODEL
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
REGGE TRAJECTORIES
SCATTERING
TRANSVERSE MOMENTUM