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Deep inelastic structure functions from HERA

Technical Report:

Abstract

Results on deep inelastic scattering obtained by H1 and ZEUS from the 1993 data taken at HERA are presented. The measurements of the charged current process provide first evidence for the damping of the total neutrino cross section at high energies by the W propagator. A comparison with neutral current scattering shows that at Q{sup 2} values above the W mass squared the weak cross section becomes comparable to the electromagnetic one. The structure function F{sub 2} of the proton was determined from neutral current scattering data. The results confirm the steep rise of F{sub 2} towards small x below 10{sup -2} seen previously by the two experiments albeit with much less statistics. The rise persists from the lowest Q{sup 2} values up to 500 GeV{sup 2}. The F{sub 2} data are in accord with logarithmic scaling violations in a new regime of low x and high Q{sup 2}. An analysis of F{sub 2} data by ZEUS in terms of the total virtual photon proton corss section shows {sigma}{sub tot}({gamma}*p) to increase with the total {gamma}*p c.m. energy, the increase being compatible with a linear rise. This is in striking contrast with the behaviour of the total cross section for  More>>
Authors:
Publication Date:
Oct 01, 1994
Product Type:
Technical Report
Report Number:
DESY-94-178; CONF-9405216-
Reference Number:
SCA: 662330; PA: DEN-94:0FN833; EDB-95:025798; SN: 95001312954
Resource Relation:
Conference: Neutrino `94: 16. international conference on neutrino physics and astrophysics,Eilat (Israel),29 May - 3 Jun 1994; Other Information: PBD: Oct 1994
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ELECTRON-PROTON INTERACTIONS; REVIEWS; CHARGED-CURRENT INTERACTIONS; DEEP INELASTIC SCATTERING; DIFFERENTIAL CROSS SECTIONS; GEV RANGE 10-100; GEV RANGE 100-1000; INCLUSIVE INTERACTIONS; NEUTRAL-CURRENT INTERACTIONS; ELECTRON NEUTRINOS; TOTAL CROSS SECTIONS; SCALE INVARIANCE; SYMMETRY BREAKING; PROGRESS REPORT; PHOTON-PROTON INTERACTIONS; ENERGY DEPENDENCE; EXCITATION FUNCTIONS; ELECTRONS; QUASI-ELASTIC SCATTERING; 662330; PHOTON AND CHARGED-LEPTON INTERACTIONS WITH HADRONS
OSTI ID:
10107957
Research Organizations:
Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0418-9833; Other: ON: DE95731368; TRN: DE94FN833
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
DEN
Size:
20 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Wolf, G. Deep inelastic structure functions from HERA. Germany: N. p., 1994. Web.
Wolf, G. Deep inelastic structure functions from HERA. Germany.
Wolf, G. 1994. "Deep inelastic structure functions from HERA." Germany.
@misc{etde_10107957,
title = {Deep inelastic structure functions from HERA}
author = {Wolf, G}
abstractNote = {Results on deep inelastic scattering obtained by H1 and ZEUS from the 1993 data taken at HERA are presented. The measurements of the charged current process provide first evidence for the damping of the total neutrino cross section at high energies by the W propagator. A comparison with neutral current scattering shows that at Q{sup 2} values above the W mass squared the weak cross section becomes comparable to the electromagnetic one. The structure function F{sub 2} of the proton was determined from neutral current scattering data. The results confirm the steep rise of F{sub 2} towards small x below 10{sup -2} seen previously by the two experiments albeit with much less statistics. The rise persists from the lowest Q{sup 2} values up to 500 GeV{sup 2}. The F{sub 2} data are in accord with logarithmic scaling violations in a new regime of low x and high Q{sup 2}. An analysis of F{sub 2} data by ZEUS in terms of the total virtual photon proton corss section shows {sigma}{sub tot}({gamma}*p) to increase with the total {gamma}*p c.m. energy, the increase being compatible with a linear rise. This is in striking contrast with the behaviour of the total cross section for real photons or for anti pp scattering. (orig.)}
place = {Germany}
year = {1994}
month = {Oct}
}