Double pomeron exchange in the reaction pp --> pppi$^{+}$pi$^{-}$ at ISR energies

Using the split field magnet (SFM) of the CERN ISR, the authors investigate the main features of the reaction pp to pp pi /sup +/ pi /sup -/ in the kinematical region where double pomeron exchange (DPE) is supposed to play an important role. Using kinematically region fitted events at the five stand...

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Detalles Bibliográficos
Autores principales: Drijard, Daniel, Fischer, H G, Gokieli, R, Innocenti, Pier Giorgio, Korbel, V, Minten, Adolf G, Norton, Alan Robert, Sosnowski, R, Stein, S, Wahl, H D, Della Negra, Michel, Fontaine, G, Frenkiel, P, Ghesquière, C, Linglin, D, Sajot, G, Frehse, H, Kluge, E E, Putzer, A, Stiewe, J, Hanke, P, Hofmann, W, Spengler, J, Wegener, D
Lenguaje:eng
Publicado: 1978
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/0550-3213(78)90448-0
http://cds.cern.ch/record/132920
Descripción
Sumario:Using the split field magnet (SFM) of the CERN ISR, the authors investigate the main features of the reaction pp to pp pi /sup +/ pi /sup -/ in the kinematical region where double pomeron exchange (DPE) is supposed to play an important role. Using kinematically region fitted events at the five standard ISR energies from square root s =23.4 GeV to square root s=63.4 GeV, they study different data subsamples as a means of distinguishing DPE from the tail of single diffraction (SD). The results are compatible with a significant DPE contribution; in particular there is no correlation between the two protons and the s- and t-dependences follows the expected behaviour. (12 refs).

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