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Inclusive Deep Inelastic Scattering at High Q2 with Longitudinally Polarised Lepton Beams at HERA
Aaron F.D., Barrelet E., Bizot J.C., Brisson V., Delcourt B. et al
Journal of High Energy Physics 09(2012) (2012) 061 - http://hal.in2p3.fr/in2p3-00713763
Physique/Physique des Hautes Energies - Expérience
Inclusive Deep Inelastic Scattering at High Q2 with Longitudinally Polarised Lepton Beams at HERA
F.D. Aaron, E. Barrelet1, J.C. Bizot2, V. Brisson2, B. Delcourt2, M. Jacquet2, C. Pascaud2, T.H. Tran2, Z. Zhang2, F. Zomer2, V. Boudry3, F. Moreau3, A. Specka3, M. Gouzevitch4, C. Diaconu5, D. Hoffmann5, E. Sauvan5, 6, C. Vallée5
1 :  LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
CNRS : UMR7585 – IN2P3 – Université Pierre et Marie Curie (UPMC) - Paris VI – Université Paris VII - Paris Diderot
Barre 12-22, 1er étage 4 Place Jussieu 75252 Paris Cedex 05
2 :  LAL - Laboratoire de l'Accélérateur Linéaire
CNRS : UMR8607 – IN2P3 – Université Paris XI - Paris Sud
Centre Scientifique d'Orsay B.P. 34 91898 ORSAY Cedex
3 :  LLR - Laboratoire Leprince-Ringuet
CNRS : UMR7638 – IN2P3 – Polytechnique - X
Route de Saclay - 91128 Palaiseau Cedex
4 :  IPNL - Institut de Physique Nucléaire de Lyon
CNRS : UMR5822 – IN2P3 – Université Claude Bernard - Lyon I
5 :  CPPM - Centre de Physique des Particules de Marseille
CNRS : UMR7346 – IN2P3 – Université de la Méditerranée - Aix-Marseille II
163, avenue de Luminy - Case 902 - 13288 Marseille cedex 09
6 :  LAPP - Laboratoire d'Annecy le Vieux de Physique des Particules
CNRS : UMR5814 – IN2P3 – Université de Savoie
9 Chemin de Bellevue - BP 110 - 74941 Annecy-le-Vieux CEDEX - France
Inclusive e\pmp single and double differential cross sections for neutral and charged current deep inelastic scattering processes are measured with the H1 detector at HERA. The data were taken at a centre-of-mass energy of \surds = 319GeV with a total integrated luminosity of 333.7 pb-1 shared between two lepton beam charges and two longitudinal lepton polarisation modes. The differential cross sections are measured in the range of negative fourmomentum transfer squared, Q2, between 60 and 50 000GeV2, and Bjorken x between 0.0008 and 0.65. The measurements are combined with earlier published unpolarised H1 data to improve statistical precision and used to determine the structure function xF_3^gammaZ. A measurement of the neutral current parity violating structure function F_2^gammaZ is presented for the first time. The polarisation dependence of the charged current total cross section is also measured. The new measurements are well described by a next-to-leading order QCD fit based on all published H1 inclusive cross section data which are used to extract the parton distribution functions of the proton.

Articles dans des revues avec comité de lecture
Journal of High Energy Physics
Publisher Institute of Physics (IOP)
ISSN 1126-6708 (eISSN : 1029-8479)

LAL 12-238
See paper for full list of authors - 123 pages, 29 figures, 52 tables submitted to JHEP
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