Journal article
INCLUSIVE TRANSVERSE-MOMENTUM DISTRIBUTIONS OF CHARGED-PARTICLES IN DIFFRACTIVE AND NON-DIFFRACTIVE PHOTOPRODUCTION AT HERA
Zeitschrift für Physik. C, Particles and fields, Vol.67(2), pp.227-237
06/01/1995
DOI: 10.1007/BF01571283
Abstract
Inclusive transverse momentum spectra of charged particles in photoproduction events in the laboratory pseudorapidity range -1.2 < eta < 1.4 have been measured up to P-T = 8 GeV using the ZEUS detector. Diffractive and non-diffractive reactions have been selected with an average gamma p centre of mass (c.m.) energy of (W) = 180 GeV. For diffractive reactions, the p(T) spectra of the photon dissociation events have been measured in two intervals of the dissociated photon mass with mean values (M(X)) = 5 GeV and 10 GeV. The inclusive transverse momentum spectra fall exponentially in the low p(T) region. The non-diffractive data p show a pronounced high p(T) tail departing from the exponential shape. The p(T) distributions are compared to lower energy photoproduction data and to hadron-hadron collisions at a similar c.m. energy. The data are also compared to the results of a next-to-leading order QCD calculation.
Details
- Title: Subtitle
- INCLUSIVE TRANSVERSE-MOMENTUM DISTRIBUTIONS OF CHARGED-PARTICLES IN DIFFRACTIVE AND NON-DIFFRACTIVE PHOTOPRODUCTION AT HERA
- Creators
- ZEUS CollaborationJ Repond (Contributor)U Mallik (Contributor)E Mccliment (Contributor)
- Resource Type
- Journal article
- Publication Details
- Zeitschrift für Physik. C, Particles and fields, Vol.67(2), pp.227-237
- DOI
- 10.1007/BF01571283
- ISSN
- 0170-9739
- eISSN
- 1431-5858
- Publisher
- Springer Nature
- Number of pages
- 11
- Language
- English
- Date published
- 06/01/1995
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984627304602771
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