{pi}{sup +} photoproduction on the proton for photon energies from 0.725 to 2.875 GeV

Journal Article · Mon Jun 15 00:00:00 EDT 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.79.065206· OSTI ID:21289946

Dugger, M; Ritchie, B G; Ball, J P; Collins, P; Pasyuk, E ^[1]; Arndt, R A; Briscoe, W J; Strakovsky, I I; Workman, R L; Berman, B L ^[2]; Amaryan, M J; Bagdasaryan, H; Careccia, S L; Dodge, G E; Hyde, C E; Klein, A; Niroula, M R; Tkachenko, S; Weinstein, L B ^[3]; Anghinolfi, M ^[4]

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1. Arizona State University, Tempe, Arizona 85287-1504 (United States)
2. George Washington University, Washington, DC 20052 (United States)
3. Old Dominion University, Norfolk, Virginia 23529 (United States)
4. INFN, Sezione di Genova, I-16146 Genova (Italy)

Differential cross sections for the reaction {gamma}p{yields}n{pi}{sup +} have been measured with the CEBAF Large Acceptance Spectrometer (CLAS) and a tagged photon beam with energies from 0.725 to 2.875 GeV. Where available, the results obtained here compare well with previously published results for the reaction. Agreement with the SAID and MAID analyses is found below 1 GeV. The present set of cross sections has been incorporated into the SAID database, and exploratory fits have been made up to 2.7 GeV. Resonance couplings have been extracted and compared to previous determinations. With the addition of these cross sections to the world data set, significant changes have occurred in the high-energy behavior of the SAID cross-section predictions and amplitudes.

• OSTI ID: 21289946
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 79, Issue 6; Other Information: DOI: 10.1103/PhysRevC.79.065206; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
COMPARATIVE EVALUATIONS
COUPLINGS
DIFFERENTIAL CROSS SECTIONS
FORECASTING
GEV RANGE 01-10
PHOTON BEAMS
PHOTONS
PHOTOPRODUCTION
PIONS PLUS
PROTONS
RESONANCE
SPECTROMETERS