Topological isolation of the deep inelastic QED Compton scattering

Topological isolation of the deep inelastic QED Compton scattering

The NA14 photoproduction experiment, carried out at the CERN SPS, has measured the inclusive cross section of events with a prompt photon at high p T in the final state. Here we present a study of the topology of the final state of these events. The topology differs from that observed for events wit...

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Veröffentlicht in:Physics letters. B 1986-12, Vol.182 (3), p.409-413
Hauptverfasser: Auge, E., Barate, R., Bloch, D., Bonamy, P., Borgeaud, P., De Bouard, G., Bouquet, B., Brunet, J.M., Burmeister, H., Burchell, M., Cattaneo, M., Ramos, S.Costa, D'Almagne, B., David, M., De Bellefon, A., De Lesquen, A., Russo, P.Dello, Dixon, J., Duane, A., Engel, J.P., Engelen, J., Ferrer, A., Filippas, T.A., Fokitis, E., Gazis, E.N., Giomataris, Y., Guyonnet, J.L., Hofmokl, T., Katsoufis, E.C., Kent, J., Lefievre, B., Legendre, R., Lemoigne, Y., Maeshima, K., McEwen, J.G., Noon, P., Orenstein, S., Papadopoulou, T., Pattison, J.B.M., Petroff, P., Richard, F., Roudeau, P., Rouge, A., Schaeffer, M., Seez, C., Shoostari, H., Siotis, I., Six, J., Treille, D., Tristram, G., Villet, G., Virdee, T.S., Volte, A., Websdale, D.M., Wormser, G., Wuthrick, J.P., Zolnierowski, Y.
Format: Artikel
Sprache:eng
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High Energy Physics - Experiment
Physics
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Zusammenfassung:The NA14 photoproduction experiment, carried out at the CERN SPS, has measured the inclusive cross section of events with a prompt photon at high p T in the final state. Here we present a study of the topology of the final state of these events. The topology differs from that observed for events with an identified π 0 in the same kinematical domain. Using these differences we have extracted the contribution from the Born term to the inclusive prompt photon cross section. The result is in good agreement with theoretical predictions and supports the assignment of a fractional electric charge to the quarks.
ISSN:0370-2693
1873-2445
DOI:10.1016/0370-2693(86)90118-8