1. Open Access Kent State
  2. Polarization Measurements in Neutral Pion Photoproduction
Author(s)
Abstract

We present measurements of the recoil proton polarization for the 1H(y,p) π 0 reaction for 0 π c.m. =60° –135° and for photon energies up to 4.1 GeV. These are the first data in this reaction for polarization transfer with circularly polarized photons. Various theoretical models are compared with the results. No evidence for hadron helicity conservation is observed. Models that employ factorization are not favored. It appears from the strong angular dependence of the induced polarization at photon energies of 2.5 and 3.1 GeV that a relatively high spin resonance or background amplitude might exist in this energy region.
Format
Article
Identifier(s)
10.1103/PhysRevC.66.034614
Publication Date
2002-01-01
Publication Title
Physical Review C
Volume
66
First Page
034614_1
Last Page
034614_14
Keywords
Subject
Community
Department of Biological Sciences
Comments

Copyright 2002, American Physical Society.
Permalink https://oaks.kent.edu/bscipubs/101
Wijesooriya, K., Afanasev, A., Amarian, M., Aniol, K., Becher, S., Benslama, K., Bimbot, L., Bosted, P., Brash, E., Calarco, J., Chai, Z., Chang, C., Chang, T., Chen, J., Choi, S., Chudakov, E., Churchwell, S., Crovelli, D., Dieterich, S., Dumalski, S., Dutta, D., Epstein, M., Fissum, K., Fox, B., Frullani, S., Gao, H., Gao, J., Garibaldi, F., Gayou, O., Gilman, R., Glamazdin, A., Glashausser, C., Gomez, S., Gorbenko, V., Hansen, O., Holt, R., Hovdebo, J., Huber, G., Jager, C., Jiang, X., Jones, C., Jones, M., Kelly, J., Kinney, E., Kooijman, E., Kumbartzki, G., Kuss, M., LeRose, J., Liang, M., Lindgren, R., Liyanage, N., Malov, S., Margaziotis, D., Markowitz, P., McCormick, K., Meekins, D., Meziani, Z., Michaels, R., Mitchell, J., Morand, L., Perdrisat, C., Pomatsalyuk, R., Punjabi, V., Ransome, R., Roche, R., Rvachev, M., Saha, A., Sarty, A., Schulte, E., Simon, D., Strauch, S., Suleiman, R., Todor, L., Ulmer, P., Urciuoli, G., Wojtsekhowski, B., Xiong, F., & Xu, W. (2002). Polarization Measurements in Neutral Pion Photoproduction. Physical Review C. https://doi.org/10.1103/PhysRevC.66.034614
Wijesooriya, K., A. Afanasev, M. Amarian, K. Aniol, S. Becher, K. Benslama, L. Bimbot, P. Bosted, E. Brash, J. Calarco, Z. Chai, C. Chang, T. Chang, J. Chen, S. Choi, E. Chudakov, S. Churchwell, D. Crovelli, S. Dieterich, S. Dumalski, D. Dutta, M. Epstein, K. Fissum, B. Fox, S. Frullani, H. Gao, J. Gao, F. Garibaldi, O. Gayou, R. Gilman, A. Glamazdin, C. Glashausser, Sergio Gomez, V. Gorbenko, O. Hansen, R. Holt, J. Hovdebo, G. Huber, C. Jager, X. Jiang, C. Jones, M. Jones, J. Kelly, E. Kinney, Edgar Kooijman, G. Kumbartzki, M. Kuss, J. LeRose, M. Liang, R. Lindgren, N. Liyanage, S. Malov, D. Margaziotis, P. Markowitz, K. McCormick, D. Meekins, Z. Meziani, R. Michaels, J. Mitchell, L. Morand, C. Perdrisat, R. Pomatsalyuk, V. Punjabi, R. Ransome, R. Roche, M. Rvachev, A. Saha, A. Sarty, E. Schulte, D. Simon, S. Strauch, R. Suleiman, L. Todor, P. Ulmer, G. Urciuoli, B. Wojtsekhowski, F. Xiong, and W. Xu. 2002. “Polarization Measurements in Neutral Pion Photoproduction”. Physical Review C. https://doi.org/10.1103/PhysRevC.66.034614.
Wijesooriya, K., A. Afanasev, M. Amarian, K. Aniol, S. Becher, K. Benslama, L. Bimbot, P. Bosted, E. Brash, J. Calarco, Z. Chai, C. Chang, T. Chang, J. Chen, S. Choi, E. Chudakov, S. Churchwell, D. Crovelli, S. Dieterich, S. Dumalski, D. Dutta, M. Epstein, K. Fissum, B. Fox, S. Frullani, H. Gao, J. Gao, F. Garibaldi, O. Gayou, R. Gilman, A. Glamazdin, C. Glashausser, S. Gomez, V. Gorbenko, O. Hansen, R. Holt, J. Hovdebo, G. Huber, C. Jager, X. Jiang, C. Jones, M. Jones, J. Kelly, E. Kinney, E. Kooijman, G. Kumbartzki, M. Kuss, J. LeRose, M. Liang, R. Lindgren, N. Liyanage, S. Malov, D. Margaziotis, P. Markowitz, K. McCormick, D. Meekins, Z. Meziani, R. Michaels, J. Mitchell, L. Morand, C. Perdrisat, R. Pomatsalyuk, V. Punjabi, R. Ransome, R. Roche, M. Rvachev, A. Saha, A. Sarty, E. Schulte, D. Simon, S. Strauch, R. Suleiman, L. Todor, P. Ulmer, G. Urciuoli, B. Wojtsekhowski, F. Xiong, and W. Xu. Polarization Measurements in Neutral Pion Photoproduction. Physical Review C, 1 Jan. 2002, doi:10.1103/PhysRevC.66.034614.