Measurement of dijet cross sections in ep interactions with a leading neutron at HERA

Aktas A.; Andreev V.; Anthonis T.; Aplin S.; Asmone A.; Babaev A.; Backovic S.; Bähr J.; Baghdasaryan A.; Baranov P.; Barrelet E.; Bartel W.; Baudrand S.; Baumgartner S.; Becker J.; Beckingham M.; Behnke O.; Behrendt O.; Belousov A.; Berger C.; Berger N.; Bizot J.C.; Boenig M.O.; Boudry V.; Bracinik J.; Brandt G.; Brisson V.; Brown D.P.; Bruncko D.; Büsser F.W.; Bunyatyan A.; Buschhorn G.; Bystritskaya L.; Campbell A.J.; Caron S.; Cassol-Brunner F.; Cerny K.; Chekelian V.; Contreras J.G.; Coughlan J.A.; Cox B.E.; Cozzika G.; Cvach J.; Dainton J.B.; Dau W.D.; Daum K.; Delcourt B.; Demirchyan R.; DeRoeck A.; Desch K.; DeWolf E.A.; Diaconu C.; Dodonov V.; Dubak A.; Eckerlin G.; Efremenko V.; Egli S.; Eichler R.; Eisele F.; Ellerbrock M.; Elsen E.; Erdmann W.; Essenov S.; Faulkner P.J.W.; Favart L.; Fedotov A.; Felst R.; Ferencei J.; Finke L.; Fleischer M.; Fleischmann P.; Fleming Y.H.; Flucke G.; Fomenko A.; Foresti I.; Formánek J.; Franke G.; Frising G.; Frisson T.; Gabathuler E.; Garutti E.; Gayler J.; Gerhards R.; Gerlich C.; Ghazaryan S.; Ginzburgskaya S.; Glazov A.; Glushkov I.; Goerlich L.; Goettlich M.; Gogitidze N.; Gorbounov S.; Goyon C.; Grab C.; Greenshaw T.; Gregori M.; Grindhammer G.; Gwilliam C.; Haidt D.; Hajduk L.

Title

Date Issued

01 January 2005

Access level

open access

Resource Type

journal article

Author(s)

Aktas A.

Andreev V.

Anthonis T.

Aplin S.

Asmone A.

Babaev A.

Backovic S.

Bähr J.

Baghdasaryan A.

Baranov P.

Barrelet E.

Bartel W.

Baudrand S.

Baumgartner S.

Becker J.

Beckingham M.

Behnke O.

Behrendt O.

Belousov A.

Berger C.

Berger N.

Bizot J.C.

Boenig M.O.

Boudry V.

Bracinik J.

Brandt G.

Brisson V.

Brown D.P.

Bruncko D.

Büsser F.W.

Bunyatyan A.

Buschhorn G.

Bystritskaya L.

Campbell A.J.

Caron S.

Cassol-Brunner F.

Cerny K.

Chekelian V.

Contreras J.G.

Coughlan J.A.

Cox B.E.

Cozzika G.

Cvach J.

Dainton J.B.

Dau W.D.

Daum K.

Delcourt B.

Demirchyan R.

DeRoeck A.

Desch K.

DeWolf E.A.

Diaconu C.

Dodonov V.

Dubak A.

Eckerlin G.

Efremenko V.

Egli S.

Eichler R.

Eisele F.

Ellerbrock M.

Elsen E.

Erdmann W.

Essenov S.

Faulkner P.J.W.

Favart L.

Fedotov A.

Felst R.

Ferencei J.

Finke L.

Fleischer M.

Fleischmann P.

Fleming Y.H.

Flucke G.

Fomenko A.

Foresti I.

Formánek J.

Franke G.

Frising G.

Frisson T.

Gabathuler E.

Garutti E.

Gayler J.

Gerhards R.

Gerlich C.

Ghazaryan S.

Ginzburgskaya S.

Glazov A.

Glushkov I.

Goerlich L.

Goettlich M.

Gogitidze N.

Gorbounov S.

Goyon C.

Grab C.

Greenshaw T.

Gregori M.

Grindhammer G.

Gwilliam C.

Haidt D.

Hajduk L.

Publisher(s)

Springer New York LLC

Abstract

Measurements are reported of the production of dijet events with a leading neutron in ep interactions at HERA. Differential cross sections for photoproduction and deep inelastic scattering are presented as a function of several kinematic variables. Leading order QCD simulation programs are compared with the measurements. Models in which the real or virtual photon interacts with a parton of an exchanged pion are able to describe the data. Next-to-leading order perturbative QCD calculations based on pion exchange are found to be in good agreement with the measured cross sections. The fraction of leading neutron dijet events with respect to all dijet events is also determined. The dijet events with a leading neutron have a lower fraction of resolved photon processes than do the inclusive dijet data. © Springer-Verlag / Società di Fisica 2005.

Start page

273

End page

286

Volume

41

Issue

3

Language

English

OCDE Knowledge area

Física de partículas, Campos de la Física Física nuclear

DOI

10.1140/epjc/s2005-02227-8

Scopus EID

2-s2.0-21544436594

Source

European Physical Journal C

ISSN of the container

14346044

Sources of information: Directorio de Producción Científica Scopus

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