First measurement of π-e→π-eγ pion virtual compton scattering

• Autor(a) principal: Ocherashvili, A.
• Data de Publicação: 2002
• Outros Autores: Alkhazov, G., Atamantchouk, A. G., Balatz, M. Y., Bondar, N. F., Cooper, P. S., Dauwe, L. J., Davidenko, G. V., Dersch, U., Dolgolenko, A. G., Dzyubenko, G. B., Edelstein, R., Emediato, L., Endler, A. M F, Engelfried, J., Eschrich, I., Escobar, C. O., Evdokimov, A. V., Filimonov, I. S., Garcia, F. G., Gaspero, M., Giller, I., Golovtsov, V. L., Gouffon, P., Gülmez, E., Kangling, H., Iori, M., Jun, S. Y., Kaya, M., Kilmer, J., Kim, V. T., Kochenda, L. M., Konorov, I., Kozhevnikov, A. P., Krivshich, A. G., Krüger, H., Kubantsev, M. A., Kubarovsky, V. P., Kulyavtsev, A. I., Kuropatkin, N. P., Kurshetsov, V. F., Kushnirenko, A., Kwan, S., Lach, J., Lamberto, A., Landsberg, L. G., Larin, I., Leikin, E. M., Yunshan, L., Luksys, M., Lungov, T. [UNESP], Maleev, V. P., Mao, D., Chensheng, M., Zhenlin, M., Mathew, P., Mattson, M., Matveev, V., McCliment, E., Moinester, M. A., Molchanov, V. V., Morelos, A., Nelson, K. D., Nemitkin, A. V., Neoustroev, P. V., Newsom, C., Nilov, A. P., Nurushev, S. B., Onel, Y., Ozel, E., Ozkorucuklu, S., Penzo, A., Petrenko, S. I., Pogodin, P., Pouh, B., Procario, M., Prutskoi, V. A., Ramberg, E., Rappazzo, G. F., Razmyslovich, B. V., Rud, V. I., Russ, J., Schiavon, P., Simon, J., Sitnikov, A. I., Skow, D., Smith, V. J., Srivastava, M., Steiner, V., Stepanov, V., Stutte, L., Svoiski, M., Terentyev, N. K., Thomas, G. P., Uvarov, L. N., Vasjliev, A. N., Vavilov, D. V., Verebryusov, V. S., Victorov, V. A., Vishnyakov, V. E., Vorobyov, A. A., Vorwalter, K., You, J., Wenheng, Z., Shuchen, Z., Zukanovich-Funchal, R.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1103/PhysRevC.66.034613; http://hdl.handle.net/11449/66963

Pion virtual compton scattering (VCS) via the reaction π-e→π-eγ was observed in the Fermilab E781 SELEX experiment. SELEX used a 600 GeV/c π- beam incident on target atomic electrons, detecting the incident π- and the final state π-, electron and γ. Theoretical predictions based on chiral perturbation theory are incorporated into a Monte Carlo simulation of the experiment and are compared to the data. The number of reconstructed events (=9) and their distribution with respect to the kinematic variables (for the kinematic region studied) are in reasonable accord with the predictions. The corresponding π- VCS experimental cross section is σ=38.8±13 nb, in agreement with the theoretical expectation of σ=34.7 nb.