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Cross section measurements of charged pion photoproduction in hydrogen and deuterium from 1.1 to 5.5 GeV

Zhu, L Y; Arrington, J; Averett, T; Beise, E; Calarco, J; Chang, T; Chen, J P; Chudakov, E; Coman, M and Clasie, B, et al. (2005) In Physical Review C (Nuclear Physics) 71(4).
Abstract
The differential cross sections for the gamma n ->pi(-)p and the gamma p ->pi(+)n processes were measured at Jefferson Lab. The photon energies ranged from 1.1 to 5.5 GeV, corresponding to center-of-mass energies from 1.7 to 3.4 GeV. The pion center-of-mass angles varied from 50(degrees) to 110(degrees). The pi(-) and pi(+) photoproduction data both exhibit a global scaling behavior at high energies and high transverse momenta, consistent with the constituent counting rule prediction and the existing pi(+) data. The data suggest possible substructure of the scaling behavior, which might be oscillations around the scaling value. The data show an enhancement in the scaled cross section at center-of-mass energy near 2.2 GeV. The... (More)
The differential cross sections for the gamma n ->pi(-)p and the gamma p ->pi(+)n processes were measured at Jefferson Lab. The photon energies ranged from 1.1 to 5.5 GeV, corresponding to center-of-mass energies from 1.7 to 3.4 GeV. The pion center-of-mass angles varied from 50(degrees) to 110(degrees). The pi(-) and pi(+) photoproduction data both exhibit a global scaling behavior at high energies and high transverse momenta, consistent with the constituent counting rule prediction and the existing pi(+) data. The data suggest possible substructure of the scaling behavior, which might be oscillations around the scaling value. The data show an enhancement in the scaled cross section at center-of-mass energy near 2.2 GeV. The differential cross section ratios [d sigma/dt(gamma n ->pi(-)p)/d sigma/dt(gamma p ->pi(+)n)] at high energies and high transverse momenta can be described by calculations based on one-hard-gluon-exchange diagrams. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review C (Nuclear Physics)
volume
71
issue
4
publisher
American Physical Society
external identifiers
  • wos:000228764600044
  • scopus:18244376139
ISSN
0556-2813
DOI
10.1103/PhysRevC.71.044603
language
English
LU publication?
yes
id
6560b57c-ac31-4641-8c11-0ed8924c98b3 (old id 242729)
date added to LUP
2007-08-08 11:43:08
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2017-09-10 04:33:02
@article{6560b57c-ac31-4641-8c11-0ed8924c98b3,
  abstract     = {The differential cross sections for the gamma n ->pi(-)p and the gamma p ->pi(+)n processes were measured at Jefferson Lab. The photon energies ranged from 1.1 to 5.5 GeV, corresponding to center-of-mass energies from 1.7 to 3.4 GeV. The pion center-of-mass angles varied from 50(degrees) to 110(degrees). The pi(-) and pi(+) photoproduction data both exhibit a global scaling behavior at high energies and high transverse momenta, consistent with the constituent counting rule prediction and the existing pi(+) data. The data suggest possible substructure of the scaling behavior, which might be oscillations around the scaling value. The data show an enhancement in the scaled cross section at center-of-mass energy near 2.2 GeV. The differential cross section ratios [d sigma/dt(gamma n ->pi(-)p)/d sigma/dt(gamma p ->pi(+)n)] at high energies and high transverse momenta can be described by calculations based on one-hard-gluon-exchange diagrams.},
  author       = {Zhu, L Y and Arrington, J and Averett, T and Beise, E and Calarco, J and Chang, T and Chen, J P 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, O and Higinbotham, D W and Holt, R J and de Jager, C W 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, Z E and Michaels, R and Mitchell, J and Nanda, S and Potterveld, D and Ransome, R and Reimer, P E and Reitz, B and Saha, A and Schulte, E C and Seely, J and Sirca, S and Strauch, S and Sulkosky, V and Vlahovic, B and Weinstein, L B and Wijesooriya, K and Williamson, C and Wojtsekhowski, B and Xiang, H and Xiong, F and Xu, W and Zeng, J and Zheng, X},
  issn         = {0556-2813},
  language     = {eng},
  number       = {4},
  publisher    = {American Physical Society},
  series       = {Physical Review C (Nuclear Physics)},
  title        = {Cross section measurements of charged pion photoproduction in hydrogen and deuterium from 1.1 to 5.5 GeV},
  url          = {http://dx.doi.org/10.1103/PhysRevC.71.044603},
  volume       = {71},
  year         = {2005},
}