Eur Phys J C (2004) 33: s385-s387
https://doi.org/10.1140/epjcd/s2004-03-1786-7

PS04 Hard QCD

Neutral and charged current cross sections and measurements of F ₂, xF ₃ and F _L at high Q ² at HERA

CERN, CH 1211 Geneva 23, Switzerland and DESY, Notkestr.85, D-22607 Hamburg,  

Received: 10 November 2003
Accepted: 9 March 2004
Published online: 31 March 2004

Abstract

Inclusive e ⁺ p cross sections for neutral and charged current deep inelastic scattering have been determined by the H1 and ZEUS collaborations at HERA. The data were recorded in 1999 and 2000 at a center of mass energy of 318 GeV with an integrated luminosity of 65.2 pb^–1 and 60.9 pb^–1, respectively. Taking into account previously published e ^± p neutral current data the structure functions F ₂ and xF ₃ were extracted. F _L was determined by extending the measurement to small scattered positron energies. The quark singlet distribution F ₂ ^CC was extracted for the first time at HERA by combining e ⁺ p and e ^– p charged current cross sections. All results are well described by Standard Model expectations.

PACS: 13.60.Hb Total and inclusive cross sections (including deep-inelastic processes) – 14.20.Dh Protons and neutrons