Otro
First measurement of π-e→π-eγ pion virtual compton scattering
Registro en:
Physical Review C - Nuclear Physics, v. 66, n. 3, p. 346131-346139, 2002.
0556-2813
10.1103/PhysRevC.66.034613
2-s2.0-4243272222.pdf
2-s2.0-4243272222
Autor
Ocherashvili, A.
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.
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.
Resumen
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.