|
|||||
|
|
Backward elastic scattering and ?? production in π?p collisions at 10 GeV/c |
|
| Authors: | B Ghidini V Lenti A Palano E Paul BR French IS Hughes RM Turnbull RA Donald G Costa L Mandelli L Perini WA Mitaroff |
| Institution: | Istituto di Fisica dell''Università and Sezione INFN, Bari, Italy;Physikalisches Institut der Universität, Bonn, Germany;CERN, European Organization for Nuclear Research, Geneva, Switzerland;Department of Natural Philosophy, University of Glasgow, UK;Oliver Lodge Laboratory, University of Liverpool, UK;Istituto di Fisica dell''Università and Sezione INFN, Milan, Italy;Institut für Hochenergiephysik der Osterreichischen Akademie der Wissenschaften, Vienna, Austria |
| Abstract: | The reactions π?p → p π? and π?p → p?? (?? → π?π0) at 10 GeV/c with the proton in the forward direction in the c.m.s. are discussed on the basis of 953 elastic scattering events and 2240 events of the reaction π?p → pπ?π0. The total backward cross sections are 0.52±0.10 and 1.52±0.28 μb, respectively. In both cases the production mechanism is compatible with the dominance of the baryonic Δδ Regge trajectory exchange. The ?? decay angular distributions are studied in the u-channel helicity frame and the spin density matrix elements are presented as functions of u. |
| Keywords: | Bari-Bonn-CERN-Glasgow-Liverpool-Milan-Vienna Collaboration |
| 本文献已被 ScienceDirect 等数据库收录！ | |