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Cross-section measurement of charged-pion photoproduction from hydrogen and deuterium

Zhu, LY; Arrington, J; Averett, T; Beise, E; Calarco, J; Chang, T; Chen, JP; Chudakov, E; Coman, M and Clasie, B, et al. (2003) In Physical Review Letters 91(2: 022003).
Abstract
We have measured the differential cross section for the gamman-->pi(-)p and gammap-->pi(+)n reactions at theta(c.m.)=90degrees in the photon energy range from 1.1 to 5.5 GeV at Jefferson Lab (JLab). The data at E(gamma)greater than or similar to3.3 GeV exhibit a global scaling behavior for both pi(-) and pi(+) photoproduction, consistent with the constituent counting rule and the existing pi(+) photoproduction data. Possible oscillations around the scaling value are suggested by these new data. The data show enhancement in the scaled cross section at a center-of-mass energy near 2.2 GeV. The cross section ratio of exclusive pi(-) to pi(+) photoproduction at high energy is consistent with the prediction based on... (More)
We have measured the differential cross section for the gamman-->pi(-)p and gammap-->pi(+)n reactions at theta(c.m.)=90degrees in the photon energy range from 1.1 to 5.5 GeV at Jefferson Lab (JLab). The data at E(gamma)greater than or similar to3.3 GeV exhibit a global scaling behavior for both pi(-) and pi(+) photoproduction, consistent with the constituent counting rule and the existing pi(+) photoproduction data. Possible oscillations around the scaling value are suggested by these new data. The data show enhancement in the scaled cross section at a center-of-mass energy near 2.2 GeV. The cross section ratio of exclusive pi(-) to pi(+) photoproduction at high energy is consistent with the prediction based on one-hard-gluon-exchange diagrams. (Less)
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published
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Physical Review Letters
volume
91
issue
2: 022003
publisher
American Physical Society
external identifiers
  • wos:000184086000009
  • scopus:0041528345
ISSN
1079-7114
DOI
language
English
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yes
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c93a92e2-7350-4b15-a2a6-55ec846fdc45 (old id 306633)
date added to LUP
2007-09-24 16:10:22
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2018-05-29 10:34:37
@article{c93a92e2-7350-4b15-a2a6-55ec846fdc45,
  abstract     = {We have measured the differential cross section for the gamman-->pi(-)p and gammap-->pi(+)n reactions at theta(c.m.)=90degrees in the photon energy range from 1.1 to 5.5 GeV at Jefferson Lab (JLab). The data at E(gamma)greater than or similar to3.3 GeV exhibit a global scaling behavior for both pi(-) and pi(+) photoproduction, consistent with the constituent counting rule and the existing pi(+) photoproduction data. Possible oscillations around the scaling value are suggested by these new data. The data show enhancement in the scaled cross section at a center-of-mass energy near 2.2 GeV. The cross section ratio of exclusive pi(-) to pi(+) photoproduction at high energy is consistent with the prediction based on one-hard-gluon-exchange diagrams.},
  author       = {Zhu, LY and Arrington, J and Averett, T and Beise, E and Calarco, J and Chang, T and Chen, JP and Chudakov, E and Coman, M and Clasie, B and Crawford, C and Dieterich, S and Dohrmann, F and Dutta, D and Fissum, Kevin and Frullani, S and Gao, H and Gilman, R and Glashausser, C and Gomez, J and Hafidi, K and Hansen, JO and Higinbotham, DW and Holt, RJ and de Jager, CW and Jiang, X and Kinney, E and Kramer, K and Kumbartzki, G and LeRose, J and Liyanage, N and Mack, D and Markowitz, P and McCormick, K and Meekins, D and Meziani, ZE and Michaels, R and Mitchell, J and Nanda, S and Potterveld, D and Ransome, R and Reimer, PE and Reitz, B and Saha, A and Schulte, EC and Seely, J and Sirca, S and Strauch, S and Sulkosky, V and Vlahovic, B and Weinstein, LB and Wijesooriya, K and Williamson, CF and Wojtsekhowski, B and Xiang, H and Xiong, F and Xu, W and Zeng, J and Zheng, X},
  issn         = {1079-7114},
  language     = {eng},
  number       = {2: 022003},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Cross-section measurement of charged-pion photoproduction from hydrogen and deuterium},
  url          = {http://dx.doi.org/},
  volume       = {91},
  year         = {2003},
}