[Delta] contribution to the paramagnetic polarizability of the proton

Journal Article · Fri Jan 01 04:00:00 EST 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.47.R7· OSTI ID:6832375

Mukhopadhyay, N C ^[1]; Nathan, A M ^[2]; Zhang, L ^[3]

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1. Department of Physics, Rensselaer Polytechnic Institute, Troy, New York 12180-3590 (United States) Institute for Nuclear Theory, University of Washington, Seattle, 98195 (United States)
2. Nuclear Physics Laboratory, University of Washington Seattle, Washington 98195 (United States)
3. Department of Physics, Renssalaer Polytechnic Institute, Troy, New York 12180-3590 (United States)

From recent experiments on low-energy Compton scattering on the proton, we extract a value (15.0[plus minus]3.0)[times]10[sup [minus]4] fm[sup 3] for the paramagnetic polarizability [beta][sub [ital p]] of the proton. We use the data on pion photoproduction to obtain a value (13[plus minus]3)[times]10[sup [minus]4] fm[sup 3] for the [Delta] contribution to [beta][sub [ital p]], much larger than that obtained from the quark model.

• DOE Contract Number: FG02-88ER40448
• OSTI ID: 6832375
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 47:1; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
BASIC INTERACTIONS
BOSONS
COMPOSITE MODELS
DATA ANALYSIS
DELTA BARYONS
DELTA-1232 BARYONS
ELECTRICAL PROPERTIES
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ENERGY-LEVEL TRANSITIONS
FERMIONS
FUNCTIONS
HADRONS
INTERACTIONS
M1-TRANSITIONS
MATHEMATICAL MODELS
MESONS
MULTIPOLE TRANSITIONS
N BARYONS
NUCLEAR REACTIONS
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PERTURBATION THEORY
PHOTON-BARYON INTERACTIONS
PHOTON-HADRON INTERACTIONS
PHOTON-NUCLEON INTERACTIONS
PHOTON-PROTON INTERACTIONS
PHOTONUCLEAR REACTIONS
PHYSICAL PROPERTIES
PIONS
POLARIZABILITY
PROTONS
PSEUDOSCALAR MESONS
Pa
Particle Systematics-- Unified Theories & Models-- (1992-)
QUARK MODEL
STRUCTURE FUNCTIONS