Measurement of the inclusive ep scattering cross section at low Q 2 and x at HERA

Aaron, FD; Alexa, C; Andreev, V; Antunovic, B; Aplin, S; Asmone, A; Astvatsatourov, A; Backovic, S; Baghdasaryan, A; Barrelet, E; Bartel, W; Begzsuren, K; Behnke, O; Behrendt, O; Belousov, A; Bizot, JC; Boudry, V; Bozovic-Jelisavcic, I; Bracinik, J; Brandt, G; Brinkmann, M; Brisson, V; Bruncko, D; Bunyatyan, A; Buschhorn, G; Bystritskaya, L; Campbell, AJ; Cantun Avila, KB; Cassol-Brunner, F; Cerny, K; Cerny, V; Chekelian, V; Cholewa, A; Contreras, JG; Coughlan, JA; Cozzika, G; Cvach, J; Dainton, JB; Daum, K; Deák, M; De Boer, Y; Delcourt, B; Del Degan, M; Delvax, J; De Roeck, A; De Wolf, EA; Diaconu, C; Dodonov, V; Dossanov, A; Dubak, A; Eckerlin, G; Eckstein, D; Efremenko, V; Egli, S; Eliseev, A; Elsen, E; Falkiewicz, A; Faulkner, PJW; Favart, L; Fedotov, A; Felst, R; Feltesse, J; Ferencei, J; Fischer, DJ; Fleischer, M; Fomenko, A; Gabathuler, E; Gayler, J; Ghazaryan, S; Glazov, A; Glushkov, I; Goerlich, L; Gogitidze, N; Gouzevitch, M; Grab, C; Greenshaw, T; Grell, BR; Grindhammer, G; Habib, S; Haidt, D; Hansson, M; Helebrant, C; Henderson, RCW; Hennekemper, E; Henschel, H; Herbst, M; Herrera, G; Hildebrandt, M; Hiller, KH; Hoffmann, D; Horisberger, R; Hreus, T; Jacquet, M; Janssen, ME; Janssen, X; Jemanov, V; Jönsson, L; Jung, AW; Jung, H; Kapichine, M; Li, Gang

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Measurement of the inclusive ep scattering cross section at low Q ² and x at HERA

Version 2 2024-06-04, 01:54

Version 1 2019-07-10, 15:31

journal contribution

posted on 2024-06-04, 01:54 authored by FD Aaron, C Alexa, V Andreev, B Antunovic, S Aplin, A Asmone, A Astvatsatourov, S Backovic, A Baghdasaryan, E Barrelet, W Bartel, K Begzsuren, O Behnke, O Behrendt, A Belousov, JC Bizot, V Boudry, I Bozovic-Jelisavcic, J Bracinik, G Brandt, M Brinkmann, V Brisson, D Bruncko, A Bunyatyan, G Buschhorn, L Bystritskaya, AJ Campbell, KB Cantun Avila, F Cassol-Brunner, K Cerny, V Cerny, V Chekelian, A Cholewa, JG Contreras, JA Coughlan, G Cozzika, J Cvach, JB Dainton, K Daum, M Deák, Y De Boer, B Delcourt, M Del Degan, J Delvax, A De Roeck, EA De Wolf, C Diaconu, V Dodonov, A Dossanov, A Dubak, G Eckerlin, D Eckstein, V Efremenko, S Egli, A Eliseev, E Elsen, A Falkiewicz, PJW Faulkner, L Favart, A Fedotov, R Felst, J Feltesse, J Ferencei, DJ Fischer, M Fleischer, A Fomenko, E Gabathuler, J Gayler, S Ghazaryan, A Glazov, I Glushkov, L Goerlich, N Gogitidze, M Gouzevitch, C Grab, T Greenshaw, BR Grell, G Grindhammer, S Habib, D Haidt, M Hansson, C Helebrant, RCW Henderson, E Hennekemper, H Henschel, M Herbst, G Herrera, M Hildebrandt, KH Hiller, D Hoffmann, R Horisberger, T Hreus, M Jacquet, ME Janssen, X Janssen, V Jemanov, L Jönsson, AW Jung, H Jung, M Kapichine, Gang LiGang Li

A measurement of the inclusive ep scattering cross section is presented in the region of low momentum transfers, 0.2∈GeV2 ≤Q 2≤12∈GeV2, and low Bjorken x, 5.10 -6x≤0.02. The result is based on two data sets collected in dedicated runs by the H1 Collaboration at HERA at beam energies of 27.6∈GeV and 920∈GeV for positrons and protons, respectively. A combination with data previously published by H1 leads to a cross section measurement of a few percent accuracy. A kinematic reconstruction method exploiting radiative ep events extends the measurement to lower Q 2 and larger x. The data are compared with theoretical models which apply to the transition region from photoproduction to deep inelastic scattering. © 2009 Springer-Verlag / Società Italiana di Fisica.

History

Journal

European Physical Journal C

Volume

63

Pagination

625-678

Location

Berlin, Germany

Publisher DOI

https://doi.org/10.1140/epjc/s10052-009-1128-6

Open access

Yes

Link to full text

https://link.springer.com/content/pdf/10.1140/epjc/s10052-009-1128-6.pdf

ISSN

1434-6044

eISSN

1434-6052

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Issue

4

Publisher

Springer

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