| Autor: |
Aubert, JJ, Bassompierre, G, Becks, KH, Benchouk, C, Best, C, Böhm, E, de Bouard, X, Brasse, FW, Broll, C, Brown, S, Carr, J, Clifft, R, Cobb, JH, Coignet, G, Combley, F, Court, GR, D'Agostini, G, Dau, WD, Davies, JK, Déclais, Y, Dosselli, U, Drees, J, Edwards, A, Edwards, M, Favier, J, Ferrero, MI, Flauger, W, Forsbach, H, Gabathuler, E, Gamet, R, Gayler, J, Gerhardt, V, Gössling, C, Haas, J, Hamacher, K, Hayman, P, Henckes, M, Korbel, V, Korzen, B, Landgraf, U, Leenen, M, Maire, M, Mohr, W, Montgomery, HE, Moser, K, Mount, RP, Nagy, E, Nassalski, J, Norton, PR, McNicholas, J, Osborne, AM, Payre, P, Peroni, C, Peschel, H, Pessard, H, Pietrzyk, U, Rith, K, Schneegans, M, Schneider, A, Sloan, T, Stier, HE, Stockhausen, W, Thénard, JM, Thompson, JC, Urban, L, Villers, M, Wahlen, H, Whalley, M, Williams, D, Williams, WSC, Williamson, J, Wimpenny, S |
| Jazyk: |
angličtina |
| Rok vydání: |
1985 |
| Předmět: |
|
| Zdroj: |
Physics Letters B. 161(1-3) |
| ISSN: |
0370-2693 |
| Popis: |
Exclusive ρ{variant}0 production has been measured in 120, 200 and 280 GeV muon-proton interactions at high Q2 (1 GeV2 < Q2 < 25 GeV2) and W (6 GeV < W < 19 GeV). The photoproduction cross section decreases as 1/Q4. A shallow t distribution, typical of a hard scattering process is observed and the ρ{variant}0 is found to be dominantly in the helicity zero spin state. The ρ{variant}0s are mainly produced by transverse photons and s-channel helicity conservation seems to be invalid. The data cannot be described by the vector meson dominance model. These data show that at high Q2 even exclusive ρ{variant}0 muoproduction is a hard scattering process and that the soft hadron-like properties of the photon have disappeared. © 1985. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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