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Title: Quasifree {pi}{sup +} production studied using the {sup 12}C({gamma},{pi}{sup +}{ital n}){sup 11}B reaction in the {Delta}(1232) resonance region

Abstract

Results are presented from a coincidence study of the {sup 12}C({gamma},{pi}{sup +}{ital n}){sup 11}B quasifree pion production reaction made in the {Delta}-resonance region using tagged photons. Cross sections for reactions originating on 1{ital p}-shell protons are found to be significantly larger than predicted by calculations based on quasifree pion production. It is suggested that more sophisticated calculations, perhaps including medium effects, may be required to reproduce the data. {copyright} {ital 1996 The American Physical Society.}

Authors:
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  1. Department of Physics and Astronomy, University of Edinburgh, Edinburgh, EH9 3JZ (Scotland)
Publication Date:
OSTI Identifier:
286186
Resource Type:
Journal Article
Journal Name:
Physical Review, C
Additional Journal Information:
Journal Volume: 54; Journal Issue: 1; Other Information: PBD: Jul 1996
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; CARBON 12 TARGET; PHOTONUCLEAR REACTIONS; PIONS PLUS; PARTICLE PRODUCTION; COINCIDENCE METHODS; BORON 11; QUASI-FREE REACTIONS; CROSS SECTIONS

Citation Formats

MacKenzie, J A, Branford, D, Ahrens, J, Annand, J R, Beck, R, Cross, G E, Davinson, T, Grabmayr, P, Hall, S J, Harty, P D, Hehl, T, Johnstone, D G, Kellie, J D, Lamparter, T, Liang, M, MacGregor, I J, McGeorge, J C, Owens, R O, Sauer, M, Schneider, R, Shotter, A C, Spaeth, K, Woods, P J, Yau, T, Department of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, Physikalische Institut, Universitaet Tuebingen, D-72076, Tuebingen, and Institut fuer Kernphysik, Johannes-Gutenberg Universitaet, D-55099, Mainz. Quasifree {pi}{sup +} production studied using the {sup 12}C({gamma},{pi}{sup +}{ital n}){sup 11}B reaction in the {Delta}(1232) resonance region. United States: N. p., 1996. Web. doi:10.1103/PhysRevC.54.R6.
MacKenzie, J A, Branford, D, Ahrens, J, Annand, J R, Beck, R, Cross, G E, Davinson, T, Grabmayr, P, Hall, S J, Harty, P D, Hehl, T, Johnstone, D G, Kellie, J D, Lamparter, T, Liang, M, MacGregor, I J, McGeorge, J C, Owens, R O, Sauer, M, Schneider, R, Shotter, A C, Spaeth, K, Woods, P J, Yau, T, Department of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, Physikalische Institut, Universitaet Tuebingen, D-72076, Tuebingen, & Institut fuer Kernphysik, Johannes-Gutenberg Universitaet, D-55099, Mainz. Quasifree {pi}{sup +} production studied using the {sup 12}C({gamma},{pi}{sup +}{ital n}){sup 11}B reaction in the {Delta}(1232) resonance region. United States. doi:10.1103/PhysRevC.54.R6.
MacKenzie, J A, Branford, D, Ahrens, J, Annand, J R, Beck, R, Cross, G E, Davinson, T, Grabmayr, P, Hall, S J, Harty, P D, Hehl, T, Johnstone, D G, Kellie, J D, Lamparter, T, Liang, M, MacGregor, I J, McGeorge, J C, Owens, R O, Sauer, M, Schneider, R, Shotter, A C, Spaeth, K, Woods, P J, Yau, T, Department of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, Physikalische Institut, Universitaet Tuebingen, D-72076, Tuebingen, and Institut fuer Kernphysik, Johannes-Gutenberg Universitaet, D-55099, Mainz. Mon . "Quasifree {pi}{sup +} production studied using the {sup 12}C({gamma},{pi}{sup +}{ital n}){sup 11}B reaction in the {Delta}(1232) resonance region". United States. doi:10.1103/PhysRevC.54.R6.
@article{osti_286186,
title = {Quasifree {pi}{sup +} production studied using the {sup 12}C({gamma},{pi}{sup +}{ital n}){sup 11}B reaction in the {Delta}(1232) resonance region},
author = {MacKenzie, J A and Branford, D and Ahrens, J and Annand, J R and Beck, R and Cross, G E and Davinson, T and Grabmayr, P and Hall, S J and Harty, P D and Hehl, T and Johnstone, D G and Kellie, J D and Lamparter, T and Liang, M and MacGregor, I J and McGeorge, J C and Owens, R O and Sauer, M and Schneider, R and Shotter, A C and Spaeth, K and Woods, P J and Yau, T and Department of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ and Physikalische Institut, Universitaet Tuebingen, D-72076, Tuebingen and Institut fuer Kernphysik, Johannes-Gutenberg Universitaet, D-55099, Mainz},
abstractNote = {Results are presented from a coincidence study of the {sup 12}C({gamma},{pi}{sup +}{ital n}){sup 11}B quasifree pion production reaction made in the {Delta}-resonance region using tagged photons. Cross sections for reactions originating on 1{ital p}-shell protons are found to be significantly larger than predicted by calculations based on quasifree pion production. It is suggested that more sophisticated calculations, perhaps including medium effects, may be required to reproduce the data. {copyright} {ital 1996 The American Physical Society.}},
doi = {10.1103/PhysRevC.54.R6},
journal = {Physical Review, C},
number = 1,
volume = 54,
place = {United States},
year = {1996},
month = {7}
}