Measurement of Leading Neutron Production in Deep-Inelastic Scattering at HERA

F.D. Aaron; C. Alexa; K. Alimujiang; V. Andreev; B. Antunovic; S. Backovic; A. Baghdasaryan; E. Barrelet; W. Bartel; K. Begzsuren; A. Belousov; J.C. Bizot; V. Boudry; I. Bozovic-Jelisavcic; J. Bracinik; G. Brandt; M. Brinkmann; V. Brisson; D. Bruncko; A. Bunyatyan; G. Buschhorn; L. Bystritskaya; A.J. Campbell; K.B. Avila; K. Cerny; V. Cerny; V. Chekelian; A. Cholewa; J.G. Contreras; J.A. Coughlan; G. Cozzika; J. Cvach; J.B. Dainton; K. Daum; M. Deak; B. Delcourt; J. Delvax; E.A de Wolf; C. Diaconu; V. Dodonov; A. Dossanov; A. Dubak; G. Eckerlin; V. Efremenko; S. Egli; A. Eliseev; E. Elsen; A. Falkiewicz; 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; I. Glushkov; L. Goerlich; N. Gogitidze; M. Gouzevitch; C. Grab; T. Greenshaw; B.R. Grell; G. Grindhammer; S. Habib; D. Haidt; C. Helebrant; R.C.W. Henderson; E. Hennekemper; H. Henschel; M. Herbst; G. Herrera; M. Hildebrandt; K.H. Hiller; D. Hoffmann; R. Horisberger; T. Hreus; M. Jacquet; X. Janssen; L. Jonsson; A.W. Jung; H. Jung; M. Kapichine; J. Katzy; I.R. Kenyon; C. Kiesling; M. Klein; C. Kleinwort; T. Kluge; A. Knutsson; R. Kogler; P. Kostka; M. Kraemer; K. Krastev; J. Kretzschmar; A. Kropivnitskaya; K. Krüger; K. Kutak; M.P.J. Landon; W. Lange; G. Lastovicka-Medin; P. Laycock; A. Lebedev; V. Lendermann; S. Levonian; G. Li; K. Lipka; A. Liptaj; B. List; J. List; N. Loktionova; R. Lopez-Fernandez; V. Lubimov; L. Lytkin; A. Mehta; A.B. Meyer; H. Meyer; J. Meyer; S. Mikocki; I. Mika; F. Moreau; A. Morozov; J.V. Morris; M.U. Mozer; M. Mudrinic; K. Müller; Th. Naumann; P.R. Newman; C. Niebuhr; A. Nikiforov; D. Nikitin; G. Nowak; K. Nowak; J.E. Olsson; S. Osman; D. Ozerov; P. Pahl; V. Palichik; I. Panagouliasl; M. Pandurovic; Th. Papadopouloul; C. Pascaud; G.D. Patel; O. Pejchal; Emile Perez; A. Petrukhin; I. Picuric; S. Piec; D. Pitzl; R. Placakyte; B. Pokorny; R. Polifka; B. Povh; V. Radescu; A.J. Rahmat; N. Raicevic; A. Raspiareza; T. Ravdandorj; P. Reimer; E. Rizvi; P. Robmann; B. Roland; R. Roosen; A. Rostovtsev; M. Rotaru; J.E Ruiz Tabasco; S. Rusakov; D. Salek; D.P.C. Sankey; M. Sauter; E. Sauvan; S. Schmitt; L. Schoeffel; A. Schöning; H.-C. Schultz-Coulon; F. Sefkow; R.N. West; L.N. Shtarkov; S. Shushkevich; T. Sloan; I. Smiljanic; Y. Soloviev; P. Sopicki; D. South; V. Spaskov; A. Specka; Z. Staykova; M. Steder; B. Stella; G. Stoicea; U. Straumann; D. Sunar; T. Sykora; V. Tchoulakov; G. Thompson; P.D. Thompson; T. Toll; F. Tomasz; T.H. Tran; D. Traynor; T.N. Trinh; P. Truöl; I. Tsakov; B. Tseepeldorj; J. Turnau; K. Urban; A. Valkarova; Corentin Vallée; P. van Mechelen; A. Vargas Trevino; Y. Vazdik; S. Vinokurova; V. Volchinski; M. von den Driesch; J. Zacek; J. Zalesak; Zhiqing Zhang; A. Zhokin; T. Zimmermann; H. Zohrabyan; F. Zomer

doi:10.1140/epjc/s10052-010-1369-4

Journal articles

Measurement of Leading Neutron Production in Deep-Inelastic Scattering at HERA

F.D. Aaron C. Alexa K. Alimujiang V. Andreev B. Antunovic S. Backovic A. Baghdasaryan E. Barrelet ¹ W. Bartel K. Begzsuren A. Belousov J.C. Bizot V. Boudry I. Bozovic-Jelisavcic J. Bracinik G. Brandt M. Brinkmann V. Brisson ² D. Bruncko A. Bunyatyan G. Buschhorn L. Bystritskaya A.J. Campbell K.B. Avila K. Cerny V. Cerny V. Chekelian A. Cholewa J.G. Contreras J.A. Coughlan G. Cozzika J. Cvach J.B. Dainton K. Daum M. Deak B. Delcourt J. Delvax E.A de Wolf C. Diaconu ³ V. Dodonov A. Dossanov A. Dubak G. Eckerlin V. Efremenko S. Egli A. Eliseev E. Elsen A. Falkiewicz L. Favart A. Fedotov R. Felst J. Feltesse ⁴ J. Ferencei D.-J. 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 B.R. Grell G. Grindhammer S. Habib D. Haidt C. Helebrant R.C.W. Henderson E. Hennekemper H. Henschel M. Herbst G. Herrera M. Hildebrandt K.H. Hiller D. Hoffmann ³ R. Horisberger T. Hreus M. Jacquet ² X. Janssen L. Jonsson A.W. Jung H. Jung M. Kapichine J. Katzy I.R. Kenyon C. Kiesling M. Klein C. Kleinwort T. Kluge A. Knutsson R. Kogler P. Kostka M. Kraemer K. Krastev J. Kretzschmar A. Kropivnitskaya K. Krüger K. Kutak M.P.J. Landon W. Lange G. Lastovicka-Medin P. Laycock A. Lebedev V. Lendermann S. Levonian G. Li ² K. Lipka A. Liptaj B. List J. List N. Loktionova R. Lopez-Fernandez V. Lubimov L. Lytkin A. Mehta A.B. Meyer H. Meyer J. Meyer S. Mikocki I. Mika F. Moreau A. Morozov J.V. Morris M.U. Mozer M. Mudrinic K. Müller Th. Naumann P.R. Newman C. Niebuhr A. Nikiforov D. Nikitin G. Nowak K. Nowak J.E. Olsson S. Osman D. Ozerov P. Pahl V. Palichik I. Panagouliasl M. Pandurovic Th. Papadopouloul C. Pascaud ² G.D. Patel O. Pejchal Emile Perez ⁴ A. Petrukhin I. Picuric S. Piec D. Pitzl R. Placakyte B. Pokorny R. Polifka B. Povh V. Radescu A.J. Rahmat N. Raicevic A. Raspiareza T. Ravdandorj P. Reimer E. Rizvi P. Robmann B. Roland R. Roosen A. Rostovtsev M. Rotaru J.E Ruiz Tabasco S. Rusakov D. Salek D.P.C. Sankey M. Sauter E. Sauvan ³ S. Schmitt L. Schoeffel ⁴ A. Schöning H.-C. Schultz-Coulon F. Sefkow R.N. West L.N. Shtarkov S. Shushkevich T. Sloan I. Smiljanic Y. Soloviev P. Sopicki D. South V. Spaskov A. Specka Z. Staykova M. Steder B. Stella G. Stoicea U. Straumann D. Sunar T. Sykora V. Tchoulakov G. Thompson P.D. Thompson T. Toll F. Tomasz T.H. Tran ² D. Traynor T.N. Trinh ³ P. Truöl I. Tsakov B. Tseepeldorj J. Turnau K. Urban A. Valkarova Corentin Vallée ³ P. van Mechelen A. Vargas Trevino Y. Vazdik S. Vinokurova V. Volchinski M. von den Driesch J. Zacek J. Zalesak Zhiqing Zhang ² A. Zhokin T. Zimmermann H. Zohrabyan F. Zomer ²

1 LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies

2 LAL - Laboratoire de l'Accélérateur Linéaire

3 CPPM - Centre de Physique des Particules de Marseille

4 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers

Abstract : The production of leading neutrons, where the neutron carries a large fraction x_L of the incoming proton's longitudinal momentum, is studied in deep-inelastic positron-proton scattering at HERA. The data were taken with the H1 detector in the years 2006 and 2007 and correspond to an integrated luminosity of 122 pb^{-1}. The semi-inclusive cross section is measured in the phase space defined by the photon virtuality 6 < Q^2 < 100 GeV^2, Bjorken scaling variable 1.5x10^{-4} < x < 3x10^{-2}, longitudinal momentum fraction 0.32 < x_L < 0.95 and neutron transverse momentum p_T < 0.2 GeV. The leading neutron structure function, F_2^{LN(3)}(Q^2,x,x_L), and the fraction of deep-inelastic scattering events containing a leading neutron are studied as a function of Q^2, x and x_L. Assuming that the pion exchange mechanism dominates leading neutron production, the data provide constraints on the shape of the pion structure function.

Document type :

Journal articles

Domain :

Physics [physics] / High Energy Physics - Experiment [hep-ex]

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Submitted on : Friday, February 5, 2010 - 10:27:03 AM
Last modification on : Wednesday, April 7, 2021 - 3:26:01 PM

Measurement of Leading Neutron Production in Deep-Inelastic Scattering at HERA

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Measurement of Leading Neutron Production in Deep-Inelastic Scattering at HERA

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