Measurement of /sup 14/N(. gamma. ,. pi. /sup +/)/sup 14/C (g. s. ) at 200 MeV: A test of the distorted-wave impulse approximation for charged-pion photoproduction below the. delta. (1232) resonance

Journal Article · Mon Aug 12 04:00:00 EDT 1985 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.55.684· OSTI ID:5348063

Cottman, B H; Min, K; Stoler, P; Teng, P K; Winhold, E J; Yamazaki, M; Yergin, a P.F.; Bernstein, A M; Blomqvist, K I; Distelbrink, J H.J.

Differential cross sections for /sup 14/N(..gamma..,..pi../sup +/)/sup 14/C(g.s.) 0/sup +/1) have been measured for an incident photon energy E/sub ..gamma../ = 200 MeV at laboratory angles of 45/sup 0/, 60/sup 0/, 75/sup 0/, 90/sup 0/, 120/sup 0/, and 140/sup 0/. Momentum-space distorted-wave-impulse-approximation calculations, using a complete treatment of a one-body pion-photoproduction operator, are found to be in excellent agreement with the experimental data. The effect of the momentum-dependent terms in the nuclear photoproduction operator is observed. The reaction is found to be sensitive to input nuclear structure elements not observable in the (e,e') form-factor data.

• Research Organization: Department of Physics, Rensselaer Polytechnic Institute, Troy, New York 12181
• DOE Contract Number: AC02-76ER03069
• OSTI ID: 5348063
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 55:7; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

651320* -- Nuclear Properties & Reactions
A=6-19
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOSONS
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
DISTORTED WAVE THEORY
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
EXPERIMENTAL DATA
GROUND STATES
HADRONS
IMPULSE APPROXIMATION
INFORMATION
MESONS
MEV RANGE
MEV RANGE 100-1000
NITROGEN 14 TARGET
NUCLEAR REACTIONS
NUMERICAL DATA
PHOTONUCLEAR REACTIONS
PIONS
PIONS PLUS
PSEUDOSCALAR MESONS
RESONANCE PARTICLES
TARGETS