Title
Measurement of the proton structure function F L (x, Q 2) at low x
Date Issued
24 July 2008
Access level
open access
Resource Type
journal article
Author(s)
Aaron F.D.
Alexa C.
Andreev V.
Antunovic B.
Aplin S.
Asmone A.
Astvatsatourov A.
Bacchetta A.
Backovic S.
Baghdasaryan A.
Baranov P.
Barrelet E.
Bartel W.
Beckingham M.
Begzsuren K.
Behnke O.
Belousov A.
Berger N.
Bizot J.C.
Boenig M.O.
Boudry V.
Bozovic-Jelisavcic I.
Bracinik J.
Brandt G.
Brinkmann M.
Brisson V.
Bruncko D.
Bunyatyan A.
Buschhorn G.
Bystritskaya L.
Campbell A.J.
Cantun Avila K.B.
Cassol-Brunner F.
Cerny K.
Cerny V.
Chekelian V.
Cholewa A.
Contreras J.G.
Coughlan J.A.
Cozzika G.
Cvach J.
Dainton J.B.
Daum K.
Deák M.
de Boer Y.
Delcourt B.
Del Degan M.
Delvax J.
De Roeck A.
De Wolf E.A.
Diaconu C.
Dodonov V.
Dossanov A.
Dubak A.
Eckerlin G.
Efremenko V.
Egli S.
Eliseev A.
Elsen E.
Essenov S.
Falkiewicz A.
Faulkner P.J.W.
Favart L.
Fedotov A.
Felst R.
Feltesse J.
Ferencei J.
Finke L.
Fleischer M.
Fomenko A.
Gabathuler E.
Gayler J.
Ghazaryan S.
Glazov A.
Glushkov I.
Goerlich L.
Goettlich M.
Gogitidze N.
Gouzevitch M.
Grab C.
Greenshaw T.
Grell B.R.
Grindhammer G.
Habib S.
Haidt D.
Hansson M.
Helebrant C.
Henderson R.C.W.
Henschel H.
Herrera G.
Hildebrandt M.
Hiller K.H.
Hoffmann D.
Horisberger R.
Hovhannisyan A.
Hreus T.
Jacquet M.
Janssen M.E.
Janssen X.
Jemanov V.
Abstract
A first measurement is reported of the longitudinal proton structure function F L (x, Q 2) at the ep collider HERA. It is based on inclusive deep inelastic e + p scattering cross section measurements with a positron beam energy of 27.5 GeV and proton beam energies of 920, 575 and 460 GeV. Employing the energy dependence of the cross section, F L is measured in a range of squared four-momentum transfers 12 ≤ Q 2 ≤ 90 GeV 2 and low Bjorken x 0.00024 ≤ x ≤ 0.0036. The F L values agree with higher order QCD calculations based on parton densities obtained using cross section data previously measured at HERA. © 2008 Elsevier B.V. All rights reserved.
Start page
139
End page
146
Volume
665
Issue
4
Language
English
OCDE Knowledge area
Física nuclear
Física de partículas, Campos de la Física
Scopus EID
2-s2.0-46849088803
Source
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
ISSN of the container
03702693
Sponsor(s)
Science and Technology Facilities Council - PP/E006442/1, PP/E000444/1.
Sources of information:
Directorio de Producción Científica
Scopus