li-inclusivedeepinelsatic-2012.pdf (2.67 MB)
Inclusive deep inelastic scattering at high Q2 with longitudinally polarised lepton beams at HERA
journal contribution
posted on 2012-09-01, 00:00 authored by F D Aaron, C Alexa, V Andreev, S Backovic, A Baghdasaryan, S Baghdasaryan, E Barrelet, W Bartel, K Begzsuren, A Belousov, P Belov, J C Bizot, V Boudry, I Bozovic-Jelisavcic, J Bracinik, G Brandt, M Brinkmann, V Brisson, D Britzger, D Bruncko, A Bunyatyan, A Bylinkin, L Bystritskaya, A J Campbell, K B Cantun Avila, F Ceccopieri, K Cerny, V Cerny, V Chekelian, J G Contreras, J A Coughlan, J Cvach, J B Dainton, K Daum, B Delcourt, J Delvax, E A De Wolf, C Diaconu, M Dobre, V Dodonov, A Dossanov, A Dubak, G Eckerlin, S Egli, A Eliseev, E Elsen, L Favart, A Fedotov, R Felst, J Feltesse, J Ferencei, D J Fischer, M Fleischer, A Fomenko, E Gabathuler, J Gayler, S Ghazaryan, A Glazov, L Goerlich, N Gogitidze, M Gouzevitch, C Grab, A Grebenyuk, T Greenshaw, G Grindhammer, S Habib, D Haidt, R C W Henderson, E Hennekemper, H Henschel, M Herbst, G Herrera, M Hildebrandt, K H Hiller, J Hladký, D Hoffmann, R Horisberger, T Hreus, F Huber, M Jacquet, X Janssen, L Jönsson, H Jung, M Kapichine, I R Kenyon, C Kiesling, M Klein, C Kleinwort, R Kogler, P Kostka, M Krämer, J Kretzschmar, K Krüger, Gang LiGang LiInclusive e ± p 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 √s = 319 GeV 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 four-momentum transfer squared, Q 2, between 60 and 50000 GeV 2, 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 3γ Z. A measurement of the neutral current parity violating structure function F 2γ Z 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.
