Title
Measurement of diffractive scattering of photons with large momentum transfer at HERA
Date Issued
23 February 2009
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
The first measurement of diffractive scattering of quasi-real photons with large momentum transfer γ p → γ Y, where Y is the proton dissociative system, is made using the H1 detector at HERA. The measurement is performed for initial photon virtualities Q 2 < 0.01 GeV 2. Single differential cross sections are measured as a function of W, the incident photon-proton centre of mass energy, and t, the square of the four-momentum transferred at the proton vertex, in the range 175 < W < 247 GeV and 4 < | t | < 36 GeV 2. The W dependence is well described by a model based on perturbative QCD using a leading logarithmic approximation of the BFKL evolution. The measured | t | dependence is harder than that predicted by the model and those observed in exclusive vector meson production. © 2009.
Start page
219
End page
226
Volume
672
Issue
3
Language
English
OCDE Knowledge area
Física nuclear
Física de partículas, Campos de la Física
Scopus EID
2-s2.0-59649093389
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/E000444/1.
Sources of information:
Directorio de Producción Científica
Scopus