Measurement of photon production in the very forward direction in deep-inelastic scattering at HERA

F. D. Aaron; C. Alexa; V. Andreev; S. Backovic; A. Baghdasaryan; S. Baghdasaryan; E. Barrelet; W. Bartel; K. Begzsuren; A. Belousov; P. Belov; J. C. Bizot; V. Boudry; I. Bozovic-Jelisavcic; J. Bracinik; G. Brandt; M. Brinkmann; V. Brisson; D. Britzger; D. Bruncko; A. Bunyatyan; G. Buschhorn; L. Bystritskaya; A. J. Campbell; K. B. Cantun Avila; F. Ceccopieri; K. Cerny; V. Cerny; V. Chekelian; J. G. Contreras; J. A. Coughlan; J. Cvach; J. B. Dainton; K. Daum; B. Delcourt; J. Delvax; E. A. De Wolf; C. Diaconu; M. Dobre; V. Dodonov; A. Dossanov; A. Dubak; G. Eckerlin; S. Egli; A. Eliseev; E. Elsen; 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; L. Goerlich; N. Gogitidze; M. Gouzevitch; C. Grab; A. Grebenyuk; 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; F. Huber; M. Jacquet; X. Janssen; L. Jönsson; H. Jung; M. Kapichine; I. R. Kenyon; C. Kiesling; M. Klein; C. Kleinwort; T. Kluge; R. Kogler; P. Kostka; M. Kraemer; J. Kretzschmar; K. Krüger; M. P.J. Landon; W. Lange; G. Laštovička-Medin; P. Laycock; A. Lebedev; V. Lendermann; S. Levonian; K. Lipka; B. List; J. List; R. Lopez-Fernandez; V. Lubimov; L. Lytkin; A. Makankine; E. Malinovski; P. Marage; H. U. Martyn; S. J. Maxfield; A. Mehta; A. B. Meyer; H. Meyer; J. Meyer; S. Mikocki; I. Milcewicz-Mika; F. Moreau; A. Morozov; J. V. Morris; M. Mudrinic; K. Müller; Th Naumann; P. R. Newman; C. Niebuhr; D. Nikitin; G. Nowak; K. Nowak; J. E. Olsson; D. Ozerov; P. Pahl; V. Palichik; I. Panagoulias; M. Pandurovic; Th Papadopoulou; C. Pascaud; G. D. Patel; E. Perez; A. Petrukhin; I. Picuric; S. Piec; H. Pirumov; D. Pitzl; R. Plačakyte; B. Pokorny; R. Polifka; B. Povh; V. Radescu; N. Raicevic; T. Ravdandorj; P. Reimer; E. Rizvi; P. Robmann; R. Roosen; A. Rostovtsev; M. Rotaru; J. E. Ruiz Tabasco; S. Rusakov; D. Šálek; D. P.C. Sankey; M. Sauter; E. Sauvan; S. Schmitt; L. Schoeffel; A. Schöning; H. C. Schultz-Coulon; F. Sefkow; 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; T. Sykora; P. D. Thompson; T. H. Tran; D. Traynor; P. Truöl; I. Tsakov; B. Tseepeldorj; J. Turnau; K. Urban; A. Valkárová; C. Vallée; P. Van Mechelen; Y. Vazdik; D. Wegener; E. Wünsch; J. Žáček; J. Zálešák; Z. Zhang; A. Zhokin; H. Zohrabyan; F. Zomer

doi:10.1140/epjc/s10052-011-1771-6

Measurement of photon production in the very forward direction in deep-inelastic scattering at HERA

F. D. Aaron
, C. Alexa
, V. Andreev
, S. Backovic
, A. Baghdasaryan
, S. Baghdasaryan
, E. Barrelet
, W. Bartel
, K. Begzsuren
, A. Belousov
, P. Belov
, J. C. Bizot
, V. Boudry
, I. Bozovic-Jelisavcic
, J. Bracinik
, G. Brandt
, M. Brinkmann
, V. Brisson
, D. Britzger
, D. Bruncko

A. Bunyatyan, G. Buschhorn, L. Bystritskaya, A. J. Campbell, K. B. Cantun Avila, F. Ceccopieri, K. Cerny, V. Cerny, V. Chekelian, J. G. Contreras, J. A. Coughlan, J. Cvach, J. B. Dainton, K. Daum, B. Delcourt, J. Delvax, E. A. De Wolf, C. Diaconu, M. Dobre, V. Dodonov, A. Dossanov, A. Dubak, G. Eckerlin, S. Egli, A. Eliseev, E. Elsen, 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, L. Goerlich, N. Gogitidze, M. Gouzevitch, C. Grab, A. Grebenyuk, 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, F. Huber, M. Jacquet, X. Janssen, L. Jönsson, H. Jung, M. Kapichine, I. R. Kenyon, C. Kiesling, M. Klein, C. Kleinwort, T. Kluge, R. Kogler, P. Kostka, M. Kraemer, J. Kretzschmar, K. Krüger, M. P.J. Landon, W. Lange, G. Laštovička-Medin, P. Laycock, A. Lebedev, V. Lendermann, S. Levonian, K. Lipka, B. List, J. List, R. Lopez-Fernandez, V. Lubimov, L. Lytkin, A. Makankine, E. Malinovski, P. Marage, H. U. Martyn, S. J. Maxfield, A. Mehta, A. B. Meyer, H. Meyer, J. Meyer, S. Mikocki, I. Milcewicz-Mika, F. Moreau, A. Morozov, J. V. Morris, M. Mudrinic, K. Müller, Th Naumann, P. R. Newman, C. Niebuhr, D. Nikitin, G. Nowak, K. Nowak, J. E. Olsson, D. Ozerov, P. Pahl, V. Palichik, I. Panagoulias, M. Pandurovic, Th Papadopoulou, C. Pascaud, G. D. Patel, E. Perez, A. Petrukhin, I. Picuric, S. Piec, H. Pirumov, D. Pitzl, R. Plačakyte, B. Pokorny, R. Polifka, B. Povh, V. Radescu, N. Raicevic, T. Ravdandorj, P. Reimer, E. Rizvi, P. Robmann, R. Roosen, A. Rostovtsev, M. Rotaru, J. E. Ruiz Tabasco, S. Rusakov, D. Šálek, D. P.C. Sankey, M. Sauter, E. Sauvan, S. Schmitt, L. Schoeffel, A. Schöning, H. C. Schultz-Coulon, F. Sefkow, 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, T. Sykora, P. D. Thompson, T. H. Tran, D. Traynor, P. Truöl, I. Tsakov, B. Tseepeldorj, J. Turnau, K. Urban, A. Valkárová, C. Vallée, P. Van Mechelen, Y. Vazdik, D. Wegener, E. Wünsch, J. Žáček, J. Zálešák, Z. Zhang, A. Zhokin, H. Zohrabyan, F. Zomer

Horia Hulubei National Institute of Physics and Nuclear Engineering
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
University of Montenegro
Yerevan Physics Institute
Universités Paris VI and VII
Laboratoire de Probabilités et Modèles Aléatoires
c/o DESY
Institute of Physics and Technology of the Mongolian Academy of Sciences
Laboratoire de l'Accélérateur Linéaire
University of Belgrade
University of Birmingham
Slovak Academy of Sciences
Max-Planck-Institut für Kernphysik
Max-Planck-Institut für Physik
Institute for Theoretical and Experimental Physics
Dept. Fis. Ap. CINVESTAV
Inter-University Institute for High Energies ULB-VUB
Charles University
CCLRC Rutherford Appleton Laboratory
Institute of Physics of the Czech Academy of Sciences
University of Liverpool
Bergische Universität Gesamthochschule Wuppertal
Aix-Marseille Université
Universität Hamburg
Paul Scherrer Institut
CEA/UVSQ/CNRS
Institute for Nuclear Physics
ETH Zurich
Lancaster University
University of Heidelberg
CINVESTAV-IPN
Lund University
Joint Institute for Nuclear Research, Dubna
Queen Mary University of London
RWTH Aachen University
Ip Paris
Physik-Institut der Universität Zürich
University Roma Tre
Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences
University of Dortmund

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

The production of photons at very small angles with respect to the proton beam direction is studied in deep-inelastic positron-proton scattering at HERA. The data are taken with the H1 detector in the years 2006 and 2007 and correspond to an integrated luminosity of 126 pb^-1. The analysis covers the range of negative four momentum transfer squared at the positron vertex 6<Q ²<100 GeV² and inelasticity 0.05<y<0.6. Cross sections are measured for the most energetic photon with pseudorapidity η>7.9 as a function of its transverse momentum p_T^lead and longitudinal momentum fraction of the incoming proton x_L^lead. In addition, the cross sections are studied as a function of the sum of the longitudinal momentum fraction x_L^lead of all photons in the pseudorapidity range η>7.9. The cross sections are normalised to the inclusive deep-inelastic scattering cross section and compared to the predictions of models of deep-inelastic scattering and models of the hadronic interactions of high energy cosmic rays.

Original language	English
Article number	1771
Pages (from-to)	1-11
Number of pages	11
Journal	European Physical Journal C
Volume	71
Issue number	10
DOIs	https://doi.org/10.1140/epjc/s10052-011-1771-6
Publication status	Published - 1 Jan 2011

Access to Document

10.1140/epjc/s10052-011-1771-6

Cite this

Aaron, F. D., Alexa, C., Andreev, V., Backovic, S., Baghdasaryan, A., Baghdasaryan, S., Barrelet, E., Bartel, W., Begzsuren, K., Belousov, A., Belov, P., Bizot, J. C., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Britzger, D., ... Zomer, F. (2011). Measurement of photon production in the very forward direction in deep-inelastic scattering at HERA. European Physical Journal C, 71(10), 1-11. Article 1771. https://doi.org/10.1140/epjc/s10052-011-1771-6

@article{fcbb8d673a4a4b0bbe79296694e039eb,

title = "Measurement of photon production in the very forward direction in deep-inelastic scattering at HERA",

abstract = "The production of photons at very small angles with respect to the proton beam direction is studied in deep-inelastic positron-proton scattering at HERA. The data are taken with the H1 detector in the years 2006 and 2007 and correspond to an integrated luminosity of 126 pb-1. The analysis covers the range of negative four momentum transfer squared at the positron vertex 62<100 GeV2 and inelasticity 0.057.9 as a function of its transverse momentum pTlead and longitudinal momentum fraction of the incoming proton xLlead. In addition, the cross sections are studied as a function of the sum of the longitudinal momentum fraction xLlead of all photons in the pseudorapidity range η>7.9. The cross sections are normalised to the inclusive deep-inelastic scattering cross section and compared to the predictions of models of deep-inelastic scattering and models of the hadronic interactions of high energy cosmic rays.",

author = "Aaron, \{F. D.\} and C. Alexa and V. Andreev and S. Backovic and A. Baghdasaryan and S. Baghdasaryan and E. Barrelet and W. Bartel and K. Begzsuren and A. Belousov and P. Belov and Bizot, \{J. C.\} and V. Boudry and I. Bozovic-Jelisavcic and J. Bracinik and G. Brandt and M. Brinkmann and V. Brisson and D. Britzger and D. Bruncko and A. Bunyatyan and G. Buschhorn and L. Bystritskaya and Campbell, \{A. J.\} and \{Cantun Avila\}, \{K. B.\} and F. Ceccopieri and K. Cerny and V. Cerny and V. Chekelian and Contreras, \{J. G.\} and Coughlan, \{J. A.\} and J. Cvach and Dainton, \{J. B.\} and K. Daum and B. Delcourt and J. Delvax and \{De Wolf\}, \{E. A.\} and C. Diaconu and M. Dobre and V. Dodonov and A. Dossanov and A. Dubak and G. Eckerlin and S. Egli and A. Eliseev and E. Elsen and L. Favart and A. Fedotov and R. Felst and J. Feltesse and J. Ferencei and Fischer, \{D. J.\} and M. Fleischer and A. Fomenko and E. Gabathuler and J. Gayler and S. Ghazaryan and A. Glazov and L. Goerlich and N. Gogitidze and M. Gouzevitch and C. Grab and A. Grebenyuk and T. Greenshaw and Grell, \{B. R.\} and G. Grindhammer and S. Habib and D. Haidt and C. Helebrant and Henderson, \{R. C.W.\} and E. Hennekemper and H. Henschel and M. Herbst and G. Herrera and M. Hildebrandt and Hiller, \{K. H.\} and D. Hoffmann and R. Horisberger and T. Hreus and F. Huber and M. Jacquet and X. Janssen and L. J{\"o}nsson and H. Jung and M. Kapichine and Kenyon, \{I. R.\} and C. Kiesling and M. Klein and C. Kleinwort and T. Kluge and R. Kogler and P. Kostka and M. Kraemer and J. Kretzschmar and K. Kr{\"u}ger and Landon, \{M. P.J.\} and W. Lange and G. La{\v s}tovi{\v c}ka-Medin and P. Laycock and A. Lebedev and V. Lendermann and S. Levonian and K. Lipka and B. List and J. List and R. Lopez-Fernandez and V. Lubimov and L. Lytkin and A. Makankine and E. Malinovski and P. Marage and Martyn, \{H. U.\} and Maxfield, \{S. J.\} and A. Mehta and Meyer, \{A. B.\} and H. Meyer and J. Meyer and S. Mikocki and I. Milcewicz-Mika and F. Moreau and A. Morozov and Morris, \{J. V.\} and M. Mudrinic and K. M{\"u}ller and Th Naumann and Newman, \{P. R.\} and C. Niebuhr and D. Nikitin and G. Nowak and K. Nowak and Olsson, \{J. E.\} and D. Ozerov and P. Pahl and V. Palichik and I. Panagoulias and M. Pandurovic and Th Papadopoulou and C. Pascaud and Patel, \{G. D.\} and E. Perez and A. Petrukhin and I. Picuric and S. Piec and H. Pirumov and D. Pitzl and R. Pla{\v c}akyte and B. Pokorny and R. Polifka and B. Povh and V. Radescu and N. Raicevic and T. Ravdandorj and P. Reimer and E. Rizvi and P. Robmann and R. Roosen and A. Rostovtsev and M. Rotaru and \{Ruiz Tabasco\}, \{J. E.\} and S. Rusakov and D. {\v S}{\'a}lek and Sankey, \{D. P.C.\} and M. Sauter and E. Sauvan and S. Schmitt and L. Schoeffel and A. Sch{\"o}ning and Schultz-Coulon, \{H. C.\} and F. Sefkow and Shtarkov, \{L. N.\} and S. Shushkevich and T. Sloan and I. Smiljanic and Y. Soloviev and P. Sopicki and D. South and V. Spaskov and A. Specka and Z. Staykova and M. Steder and B. Stella and G. Stoicea and U. Straumann and T. Sykora and Thompson, \{P. D.\} and Tran, \{T. H.\} and D. Traynor and P. Tru{\"o}l and I. Tsakov and B. Tseepeldorj and J. Turnau and K. Urban and A. Valk{\'a}rov{\'a} and C. Vall{\'e}e and \{Van Mechelen\}, P. and Y. Vazdik and D. Wegener and E. W{\"u}nsch and J. {\v Z}{\'a}{\v c}ek and J. Z{\'a}le{\v s}{\'a}k and Z. Zhang and A. Zhokin and H. Zohrabyan and F. Zomer",

year = "2011",

month = jan,

day = "1",

doi = "10.1140/epjc/s10052-011-1771-6",

language = "English",

volume = "71",

pages = "1--11",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer Nature",

number = "10",

}

Aaron, FD, Alexa, C, Andreev, V, Backovic, S, Baghdasaryan, A, Baghdasaryan, S, Barrelet, E, Bartel, W, Begzsuren, K, Belousov, A, Belov, P, Bizot, JC, Boudry, V, Bozovic-Jelisavcic, I, Bracinik, J, Brandt, G, Brinkmann, M, Brisson, V, Britzger, D, Bruncko, D, Bunyatyan, A, Buschhorn, G, Bystritskaya, L, Campbell, AJ, Cantun Avila, KB, Ceccopieri, F, Cerny, K, Cerny, V, Chekelian, V, Contreras, JG, Coughlan, JA, Cvach, J, Dainton, JB, Daum, K, Delcourt, B, Delvax, J, De Wolf, EA, Diaconu, C, Dobre, M, Dodonov, V, Dossanov, A, Dubak, A, Eckerlin, G, Egli, S, Eliseev, A, Elsen, E, Favart, L, Fedotov, A, Felst, R, Feltesse, J, Ferencei, J, Fischer, DJ, Fleischer, M, Fomenko, A, Gabathuler, E, Gayler, J, Ghazaryan, S, Glazov, A, Goerlich, L, Gogitidze, N, Gouzevitch, M, Grab, C, Grebenyuk, A, Greenshaw, T, Grell, BR, Grindhammer, G, Habib, S, Haidt, D, Helebrant, C, Henderson, RCW, Hennekemper, E, Henschel, H, Herbst, M, Herrera, G, Hildebrandt, M, Hiller, KH, Hoffmann, D, Horisberger, R, Hreus, T, Huber, F, Jacquet, M, Janssen, X, Jönsson, L, Jung, H, Kapichine, M, Kenyon, IR, Kiesling, C, Klein, M, Kleinwort, C, Kluge, T, Kogler, R, Kostka, P, Kraemer, M, Kretzschmar, J, Krüger, K, Landon, MPJ, Lange, W, Laštovička-Medin, G, Laycock, P, Lebedev, A, Lendermann, V, Levonian, S, Lipka, K, List, B, List, J, Lopez-Fernandez, R, Lubimov, V, Lytkin, L, Makankine, A, Malinovski, E, Marage, P, Martyn, HU, Maxfield, SJ, Mehta, A, Meyer, AB, Meyer, H, Meyer, J, Mikocki, S, Milcewicz-Mika, I, Moreau, F, Morozov, A, Morris, JV, Mudrinic, M, Müller, K, Naumann, T, Newman, PR, Niebuhr, C, Nikitin, D, Nowak, G, Nowak, K, Olsson, JE, Ozerov, D, Pahl, P, Palichik, V, Panagoulias, I, Pandurovic, M, Papadopoulou, T, Pascaud, C, Patel, GD, Perez, E, Petrukhin, A, Picuric, I, Piec, S, Pirumov, H, Pitzl, D, Plačakyte, R, Pokorny, B, Polifka, R, Povh, B, Radescu, V, Raicevic, N, Ravdandorj, T, Reimer, P, Rizvi, E, Robmann, P, Roosen, R, Rostovtsev, A, Rotaru, M, Ruiz Tabasco, JE, Rusakov, S, Šálek, D, Sankey, DPC, Sauter, M, Sauvan, E, Schmitt, S, Schoeffel, L, Schöning, A, Schultz-Coulon, HC, Sefkow, F, Shtarkov, LN, Shushkevich, S, Sloan, T, Smiljanic, I, Soloviev, Y, Sopicki, P, South, D, Spaskov, V, Specka, A, Staykova, Z, Steder, M, Stella, B, Stoicea, G, Straumann, U, Sykora, T, Thompson, PD, Tran, TH, Traynor, D, Truöl, P, Tsakov, I, Tseepeldorj, B, Turnau, J, Urban, K, Valkárová, A, Vallée, C, Van Mechelen, P, Vazdik, Y, Wegener, D, Wünsch, E, Žáček, J, Zálešák, J, Zhang, Z, Zhokin, A, Zohrabyan, H & Zomer, F 2011, 'Measurement of photon production in the very forward direction in deep-inelastic scattering at HERA', European Physical Journal C, vol. 71, no. 10, 1771, pp. 1-11. https://doi.org/10.1140/epjc/s10052-011-1771-6

TY - JOUR

T1 - Measurement of photon production in the very forward direction in deep-inelastic scattering at HERA

AU - Aaron, F. D.

AU - Alexa, C.

AU - Andreev, V.

AU - Backovic, S.

AU - Baghdasaryan, A.

AU - Baghdasaryan, S.

AU - Barrelet, E.

AU - Bartel, W.

AU - Begzsuren, K.

AU - Belousov, A.

AU - Belov, P.

AU - Bizot, J. C.

AU - Boudry, V.

AU - Bozovic-Jelisavcic, I.

AU - Bracinik, J.

AU - Brandt, G.

AU - Brinkmann, M.

AU - Brisson, V.

AU - Britzger, D.

AU - Bruncko, D.

AU - Bunyatyan, A.

AU - Buschhorn, G.

AU - Bystritskaya, L.

AU - Campbell, A. J.

AU - Cantun Avila, K. B.

AU - Ceccopieri, F.

AU - Cerny, K.

AU - Cerny, V.

AU - Chekelian, V.

AU - Contreras, J. G.

AU - Coughlan, J. A.

AU - Cvach, J.

AU - Dainton, J. B.

AU - Daum, K.

AU - Delcourt, B.

AU - Delvax, J.

AU - De Wolf, E. A.

AU - Diaconu, C.

AU - Dobre, M.

AU - Dodonov, V.

AU - Dossanov, A.

AU - Dubak, A.

AU - Eckerlin, G.

AU - Egli, S.

AU - Eliseev, A.

AU - Elsen, E.

AU - Favart, L.

AU - Fedotov, A.

AU - Felst, R.

AU - Feltesse, J.

AU - Ferencei, J.

AU - Fischer, D. J.

AU - Fleischer, M.

AU - Fomenko, A.

AU - Gabathuler, E.

AU - Gayler, J.

AU - Ghazaryan, S.

AU - Glazov, A.

AU - Goerlich, L.

AU - Gogitidze, N.

AU - Gouzevitch, M.

AU - Grab, C.

AU - Grebenyuk, A.

AU - Greenshaw, T.

AU - Grell, B. R.

AU - Grindhammer, G.

AU - Habib, S.

AU - Haidt, D.

AU - Helebrant, C.

AU - Henderson, R. C.W.

AU - Hennekemper, E.

AU - Henschel, H.

AU - Herbst, M.

AU - Herrera, G.

AU - Hildebrandt, M.

AU - Hiller, K. H.

AU - Hoffmann, D.

AU - Horisberger, R.

AU - Hreus, T.

AU - Huber, F.

AU - Jacquet, M.

AU - Janssen, X.

AU - Jönsson, L.

AU - Jung, H.

AU - Kapichine, M.

AU - Kenyon, I. R.

AU - Kiesling, C.

AU - Klein, M.

AU - Kleinwort, C.

AU - Kluge, T.

AU - Kogler, R.

AU - Kostka, P.

AU - Kraemer, M.

AU - Kretzschmar, J.

AU - Krüger, K.

AU - Landon, M. P.J.

AU - Lange, W.

AU - Laštovička-Medin, G.

AU - Laycock, P.

AU - Lebedev, A.

AU - Lendermann, V.

AU - Levonian, S.

AU - Lipka, K.

AU - List, B.

AU - List, J.

AU - Lopez-Fernandez, R.

AU - Lubimov, V.

AU - Lytkin, L.

AU - Makankine, A.

AU - Malinovski, E.

AU - Marage, P.

AU - Martyn, H. U.

AU - Maxfield, S. J.

AU - Mehta, A.

AU - Meyer, A. B.

AU - Meyer, H.

AU - Meyer, J.

AU - Mikocki, S.

AU - Milcewicz-Mika, I.

AU - Moreau, F.

AU - Morozov, A.

AU - Morris, J. V.

AU - Mudrinic, M.

AU - Müller, K.

AU - Naumann, Th

AU - Newman, P. R.

AU - Niebuhr, C.

AU - Nikitin, D.

AU - Nowak, G.

AU - Nowak, K.

AU - Olsson, J. E.

AU - Ozerov, D.

AU - Pahl, P.

AU - Palichik, V.

AU - Panagoulias, I.

AU - Pandurovic, M.

AU - Papadopoulou, Th

AU - Pascaud, C.

AU - Patel, G. D.

AU - Perez, E.

AU - Petrukhin, A.

AU - Picuric, I.

AU - Piec, S.

AU - Pirumov, H.

AU - Pitzl, D.

AU - Plačakyte, R.

AU - Pokorny, B.

AU - Polifka, R.

AU - Povh, B.

AU - Radescu, V.

AU - Raicevic, N.

AU - Ravdandorj, T.

AU - Reimer, P.

AU - Rizvi, E.

AU - Robmann, P.

AU - Roosen, R.

AU - Rostovtsev, A.

AU - Rotaru, M.

AU - Ruiz Tabasco, J. E.

AU - Rusakov, S.

AU - Šálek, D.

AU - Sankey, D. P.C.

AU - Sauter, M.

AU - Sauvan, E.

AU - Schmitt, S.

AU - Schoeffel, L.

AU - Schöning, A.

AU - Schultz-Coulon, H. C.

AU - Sefkow, F.

AU - Shtarkov, L. N.

AU - Shushkevich, S.

AU - Sloan, T.

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AU - Žáček, J.

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AU - Zhang, Z.

AU - Zhokin, A.

AU - Zohrabyan, H.

AU - Zomer, F.

PY - 2011/1/1

Y1 - 2011/1/1

N2 - The production of photons at very small angles with respect to the proton beam direction is studied in deep-inelastic positron-proton scattering at HERA. The data are taken with the H1 detector in the years 2006 and 2007 and correspond to an integrated luminosity of 126 pb-1. The analysis covers the range of negative four momentum transfer squared at the positron vertex 62<100 GeV2 and inelasticity 0.057.9 as a function of its transverse momentum pTlead and longitudinal momentum fraction of the incoming proton xLlead. In addition, the cross sections are studied as a function of the sum of the longitudinal momentum fraction xLlead of all photons in the pseudorapidity range η>7.9. The cross sections are normalised to the inclusive deep-inelastic scattering cross section and compared to the predictions of models of deep-inelastic scattering and models of the hadronic interactions of high energy cosmic rays.

AB - The production of photons at very small angles with respect to the proton beam direction is studied in deep-inelastic positron-proton scattering at HERA. The data are taken with the H1 detector in the years 2006 and 2007 and correspond to an integrated luminosity of 126 pb-1. The analysis covers the range of negative four momentum transfer squared at the positron vertex 62<100 GeV2 and inelasticity 0.057.9 as a function of its transverse momentum pTlead and longitudinal momentum fraction of the incoming proton xLlead. In addition, the cross sections are studied as a function of the sum of the longitudinal momentum fraction xLlead of all photons in the pseudorapidity range η>7.9. The cross sections are normalised to the inclusive deep-inelastic scattering cross section and compared to the predictions of models of deep-inelastic scattering and models of the hadronic interactions of high energy cosmic rays.

U2 - 10.1140/epjc/s10052-011-1771-6

DO - 10.1140/epjc/s10052-011-1771-6

M3 - Article

AN - SCOPUS:84883770770

SN - 1434-6044

VL - 71

SP - 1

EP - 11

JO - European Physical Journal C

JF - European Physical Journal C

IS - 10

M1 - 1771

ER -

Measurement of photon production in the very forward direction in deep-inelastic scattering at HERA

Abstract

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