Photon diffractive dissociation, gamma p --> Xp, has been studied at HERA with the ZEUS detector using ep interactions where the virtuality Q(2) Of the exchanged photon is smaller than 0.02 GeV(2). The squared four-momentum t exchanged at the proton vertex was determined in the range 0.073 < \t\ < 0.40 GeV(2) by measuring the scattered proton in the ZEUS Leading Proton Spectrometer. In the photon-proton centre-of-mass energy interval 176 < W < 225 GeV and for masses of the dissociated photon system 4 < M(x) < 32 GeV, the t distribution has an exponential shape, dN/d\t\ proportional to exp (-b\t\), with a slope parameter b = 6.8 +/- 0.9 (stat.)(-1.1)(+1.2) (syst.) GeV(-2).

Measurement of the t distribution in diffractive photoproduction at HERA / J., B., M., D., D., K., S., M., D., M., B., M., J., R., R., S., R. L., T., R., Y., H., Z., M. C., K., F., A., P., A., G., B., M., B., L., B., D., B., A., B., G., B., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 2:(1998), pp. 237-246. [10.1007/s100520050135]

Measurement of the t distribution in diffractive photoproduction at HERA

D'AGOSTINI, Giulio;NIGRO, Andrea;
1998

Abstract

Photon diffractive dissociation, gamma p --> Xp, has been studied at HERA with the ZEUS detector using ep interactions where the virtuality Q(2) Of the exchanged photon is smaller than 0.02 GeV(2). The squared four-momentum t exchanged at the proton vertex was determined in the range 0.073 < \t\ < 0.40 GeV(2) by measuring the scattered proton in the ZEUS Leading Proton Spectrometer. In the photon-proton centre-of-mass energy interval 176 < W < 225 GeV and for masses of the dissociated photon system 4 < M(x) < 32 GeV, the t distribution has an exponential shape, dN/d\t\ proportional to exp (-b\t\), with a slope parameter b = 6.8 +/- 0.9 (stat.)(-1.1)(+1.2) (syst.) GeV(-2).
1998
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the t distribution in diffractive photoproduction at HERA / J., B., M., D., D., K., S., M., D., M., B., M., J., R., R., S., R. L., T., R., Y., H., Z., M. C., K., F., A., P., A., G., B., M., B., L., B., D., B., A., B., G., B., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 2:(1998), pp. 237-246. [10.1007/s100520050135]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/496887
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