Three- and four-jet production at low x at HERA

F. D. Aaron, A. Aktas, C. Alexa, V. Andreev, B. Antunovic, S. Aplin, A. Asmone, A. Astvatsatourov, S. Backovic, A. Baghdasaryan, P. Baranov, E. Barrelet, W. Bartel, S. Baudrand, M. Beckingham, K. Begzsuren, O. Behnke, O. Behrendt, A. Belousov, N. BergerJ. C. Bizot, M. O. Boenig, V. Boudry, I. Bozovic-Jelisavcic, J. Bracinik, G. Brandt, M. Brinkmann, V. Brisson, D. Bruncko, F. W. Büsser, A. Bunyatyan, G. Buschhorn, L. Bystritskaya, A. J. Campbell, K. B. Cantun Avila, F. Cassol-Brunner, 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, Y. De Boer, B. Delcourt, M. Del Degan, J. Delvax, A. De Roeck, E. A. De Wolf, C. Diaconu, V. Dodonov, A. Dubak, G. Eckerlin, V. Efremenko, S. Egli, R. Eichler, F. Eisele, A. Eliseev, E. Elsen, S. Essenov, A. Falkiewicz, P. J W Faulkner, L. Favart, A. Fedotov, R. Felst, J. Feltesse, J. Ferencei, L. Finke, M. Fleischer, A. Fomenko, G. Franke, T. Frisson, E. Gabathuler, J. Gayler, S. Ghazaryan, S. Ginzburgskaya, A. Glazov, I. Glushkov, L. Goerlich, M. Goettlich, N. Gogitidze, S. Gorbounov, M. Gouzevitch, C. Grab, T. Greenshaw, B. R. Grell, G. Grindhammer, S. Habib, D. Haidt, M. Hansson, G. Heinzelmann, C. Helebrant, R. C W Henderson, H. Henschel, G. Herrera, M. Hildebrandt, K. H. Hiller, D. Hoffmann, R. Horisberger, A. Hovhannisyan, T. Hreus, M. Jacquet, M. E. Janssen, X. Janssen, V. Jemanov, L. Jönsson, D. P. Johnson, A. W. Jung, H. Jung, M. Kapichine, J. Katzy, I. R. Kenyon, C. Kiesling, M. Klein, C. Kleinwort, T. Klimkovich, T. Kluge, A. Knutsson, V. Korbel, P. Kostka, M. Kraemer, K. Krastev, J. Kretzschmar, A. Kropivnitskaya, K. Krüger, M. P J Landon, W. Lange, G. Laštovička-Medin, P. Laycock, A. Lebedev, G. Leibenguth, V. Lendermann, S. Levonian, G. Li, L. Lindfeld, K. Lipka, A. Liptaj, B. List, J. List, N. Loktionova, R. Lopez-Fernandez, V. Lubimov, A. I. Lucaci-Timoce, L. Lytkin, A. Makankine, E. Malinovski, P. Marage, L. Marti, M. Martisikova, H. U. Martyn, S. J. Maxfield, A. Mehta, K. Meier, A. B. Meyer, H. Meyer, H. Meyer, J. Meyer, V. Michels, S. Mikocki, I. Milcewicz-Mika, A. Mohamed, F. Moreau, A. Morozov, J. V. Morris, M. U. Mozer, K. Müller, P. Murín, K. Nankov, B. Naroska, T. Naumann, P. R. Newman, C. Niebuhr, A. Nikiforov, G. Nowak, K. Nowak, M. Nozicka, R. Oganezov, B. Olivier, J. E. Olsson, S. Osman, D. Ozerov, V. Palichik, I. Panagoulias, M. Pandurovic, T. Papadopoulou, C. Pascaud, G. D. Patel, H. Peng, E. Perez, Daniel Astudillo, A. Perieanu, A. Petrukhin, I. Picuric, S. Piec, D. Pitzl, R. Plačakyte, R. Polifka, B. Povh, T. Preda, P. Prideaux, V. Radescu, A. J. Rahmat, N. Raicevic, T. Ravdandorj, P. Reimer, C. Risler, E. Rizvi, P. Robmann, B. Roland, R. Roosen, A. Rostovtsev, Z. Rurikova, S. Rusakov, D. Salek, F. Salvaire, D. P C Sankey, M. Sauter, E. Sauvan, S. Schmidt, S. Schmitt, C. Schmitz, L. Schoeffel, A. Schöning, H. C. Schultz-Coulon, F. Sefkow, R. N. Shaw-West, I. Sheviakov, L. N. Shtarkov, T. Sloan, I. Smiljanic, P. Smirnov, Y. Soloviev, D. South, V. Spaskov, A. Specka, Z. Staykova, M. Steder, B. Stella, J. Stiewe, 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, G. Tsipolitis, I. Tsurin, J. Turnau, E. Tzamariudaki, K. Urban, D. Utkin, A. Valkárová, C. Vallée, P. Van Mechelen, A. Vargas Trevino, Y. Vazdik, S. Vinokurova, V. Volchinski, G. Weber, R. Weber, D. Wegener, C. Werner, M. Wessels, C. Wissing, R. Wolf, E. Wünsch, S. Xella, V. Yeganov, J. Žáček, J. Zálešák, Z. Zhang, A. Zhelezov, A. Zhokin, Y. C. Zhu, T. Zimmermann, H. Zohrabyan, F. Zomer

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Three- and four-jet production is measured in deep-inelastic ep scattering at low x and Q2 with the H1 detector using an integrated luminosity of 44.2 pb-1. Several phase space regions are selected for the three-jet analysis in order to study the underlying parton dynamics from global topologies to the more restrictive regions of forward jets close to the proton direction. The measurements of cross sections for events with at least three jets are compared to fixed order QCD predictions of O(αs 2) and O(αs 3) and with Monte Carlo simulation programs where higher order effects are approximated by parton showers. A good overall description is provided by the O(α s 3) calculation. Too few events are predicted at the lowest x ∼ 10-4, especially for topologies with two forward jets. This hints to large contributions at low x from initial state radiation of gluons close to the proton direction and unordered in transverse momentum. The Monte Carlo program in which gluon radiation is generated by the colour dipole model gives a good description of both the three- and the four-jet data in absolute normalisation and shape.

Original languageEnglish
Pages (from-to)389-409
Number of pages21
JournalEuropean Physical Journal C
Volume54
Issue number3
DOIs
Publication statusPublished - 1 Apr 2008
Externally publishedYes

Fingerprint

partons
Protons
topology
Topology
Radiation
Inelastic scattering
protons
gluons
radiation
showers
transverse momentum
Luminance
Momentum
inelastic scattering
quantum chromodynamics
luminosity
dipoles
Color
Detectors
color

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Aaron, F. D., Aktas, A., Alexa, C., Andreev, V., Antunovic, B., Aplin, S., ... Zomer, F. (2008). Three- and four-jet production at low x at HERA. European Physical Journal C, 54(3), 389-409. https://doi.org/10.1140/epjc/s10052-008-0544-3

Three- and four-jet production at low x at HERA. / Aaron, F. D.; Aktas, A.; Alexa, C.; Andreev, V.; Antunovic, B.; Aplin, S.; Asmone, A.; Astvatsatourov, A.; Backovic, S.; Baghdasaryan, A.; Baranov, P.; Barrelet, E.; Bartel, W.; Baudrand, S.; Beckingham, M.; Begzsuren, K.; Behnke, O.; Behrendt, 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.; Büsser, F. W.; 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.; Deak, M.; De Boer, Y.; Delcourt, B.; Del Degan, M.; Delvax, J.; De Roeck, A.; De Wolf, E. A.; Diaconu, C.; Dodonov, V.; Dubak, A.; Eckerlin, G.; Efremenko, V.; Egli, S.; Eichler, R.; Eisele, F.; 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.; Franke, G.; Frisson, T.; Gabathuler, E.; Gayler, J.; Ghazaryan, S.; Ginzburgskaya, S.; Glazov, A.; Glushkov, I.; Goerlich, L.; Goettlich, M.; Gogitidze, N.; Gorbounov, S.; Gouzevitch, M.; Grab, C.; Greenshaw, T.; Grell, B. R.; Grindhammer, G.; Habib, S.; Haidt, D.; Hansson, M.; Heinzelmann, G.; 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.; Jönsson, L.; Johnson, D. P.; Jung, A. W.; Jung, H.; Kapichine, M.; Katzy, J.; Kenyon, I. R.; Kiesling, C.; Klein, M.; Kleinwort, C.; Klimkovich, T.; Kluge, T.; Knutsson, A.; Korbel, V.; Kostka, P.; Kraemer, M.; Krastev, K.; Kretzschmar, J.; Kropivnitskaya, A.; Krüger, K.; Landon, M. P J; Lange, W.; Laštovička-Medin, G.; Laycock, P.; Lebedev, A.; Leibenguth, G.; Lendermann, V.; Levonian, S.; Li, G.; Lindfeld, L.; Lipka, K.; Liptaj, A.; List, B.; List, J.; Loktionova, N.; Lopez-Fernandez, R.; Lubimov, V.; Lucaci-Timoce, A. I.; Lytkin, L.; Makankine, A.; Malinovski, E.; Marage, P.; Marti, L.; Martisikova, M.; Martyn, H. U.; Maxfield, S. J.; Mehta, A.; Meier, K.; Meyer, A. B.; Meyer, H.; Meyer, H.; Meyer, J.; Michels, V.; Mikocki, S.; Milcewicz-Mika, I.; Mohamed, A.; Moreau, F.; Morozov, A.; Morris, J. V.; Mozer, M. U.; Müller, K.; Murín, P.; Nankov, K.; Naroska, B.; Naumann, T.; Newman, P. R.; Niebuhr, C.; Nikiforov, A.; Nowak, G.; Nowak, K.; Nozicka, M.; Oganezov, R.; Olivier, B.; Olsson, J. E.; Osman, S.; Ozerov, D.; Palichik, V.; Panagoulias, I.; Pandurovic, M.; Papadopoulou, T.; Pascaud, C.; Patel, G. D.; Peng, H.; Perez, E.; Astudillo, Daniel; Perieanu, A.; Petrukhin, A.; Picuric, I.; Piec, S.; Pitzl, D.; Plačakyte, R.; Polifka, R.; Povh, B.; Preda, T.; Prideaux, P.; Radescu, V.; Rahmat, A. J.; Raicevic, N.; Ravdandorj, T.; Reimer, P.; Risler, C.; Rizvi, E.; Robmann, P.; Roland, B.; Roosen, R.; Rostovtsev, A.; Rurikova, Z.; Rusakov, S.; Salek, D.; Salvaire, F.; Sankey, D. P C; Sauter, M.; Sauvan, E.; Schmidt, S.; Schmitt, S.; Schmitz, C.; Schoeffel, L.; Schöning, A.; Schultz-Coulon, H. C.; Sefkow, F.; Shaw-West, R. N.; Sheviakov, I.; Shtarkov, L. N.; Sloan, T.; Smiljanic, I.; Smirnov, P.; Soloviev, Y.; South, D.; Spaskov, V.; Specka, A.; Staykova, Z.; Steder, M.; Stella, B.; Stiewe, J.; Straumann, U.; Sunar, D.; Sykora, T.; Tchoulakov, V.; Thompson, G.; Thompson, P. D.; Toll, T.; Tomasz, F.; Tran, T. H.; Traynor, D.; Trinh, T. N.; Truöl, P.; Tsakov, I.; Tseepeldorj, B.; Tsipolitis, G.; Tsurin, I.; Turnau, J.; Tzamariudaki, E.; Urban, K.; Utkin, D.; Valkárová, A.; Vallée, C.; Van Mechelen, P.; Vargas Trevino, A.; Vazdik, Y.; Vinokurova, S.; Volchinski, V.; Weber, G.; Weber, R.; Wegener, D.; Werner, C.; Wessels, M.; Wissing, C.; Wolf, R.; Wünsch, E.; Xella, S.; Yeganov, V.; Žáček, J.; Zálešák, J.; Zhang, Z.; Zhelezov, A.; Zhokin, A.; Zhu, Y. C.; Zimmermann, T.; Zohrabyan, H.; Zomer, F.

In: European Physical Journal C, Vol. 54, No. 3, 01.04.2008, p. 389-409.

Research output: Contribution to journalArticle

Aaron, FD, Aktas, A, Alexa, C, Andreev, V, Antunovic, B, Aplin, S, Asmone, A, Astvatsatourov, A, Backovic, S, Baghdasaryan, A, Baranov, P, Barrelet, E, Bartel, W, Baudrand, S, Beckingham, M, Begzsuren, K, Behnke, O, Behrendt, O, Belousov, A, Berger, N, Bizot, JC, Boenig, MO, Boudry, V, Bozovic-Jelisavcic, I, Bracinik, J, Brandt, G, Brinkmann, M, Brisson, V, Bruncko, D, Büsser, FW, Bunyatyan, A, Buschhorn, G, Bystritskaya, L, Campbell, AJ, Cantun Avila, KB, Cassol-Brunner, F, Cerny, K, Cerny, V, Chekelian, V, Cholewa, A, Contreras, JG, Coughlan, JA, Cozzika, G, Cvach, J, Dainton, JB, Daum, K, Deak, M, De Boer, Y, Delcourt, B, Del Degan, M, Delvax, J, De Roeck, A, De Wolf, EA, Diaconu, C, Dodonov, V, Dubak, A, Eckerlin, G, Efremenko, V, Egli, S, Eichler, R, Eisele, F, Eliseev, A, Elsen, E, Essenov, S, Falkiewicz, A, Faulkner, PJW, Favart, L, Fedotov, A, Felst, R, Feltesse, J, Ferencei, J, Finke, L, Fleischer, M, Fomenko, A, Franke, G, Frisson, T, Gabathuler, E, Gayler, J, Ghazaryan, S, Ginzburgskaya, S, Glazov, A, Glushkov, I, Goerlich, L, Goettlich, M, Gogitidze, N, Gorbounov, S, Gouzevitch, M, Grab, C, Greenshaw, T, Grell, BR, Grindhammer, G, Habib, S, Haidt, D, Hansson, M, Heinzelmann, G, Helebrant, C, Henderson, RCW, Henschel, H, Herrera, G, Hildebrandt, M, Hiller, KH, Hoffmann, D, Horisberger, R, Hovhannisyan, A, Hreus, T, Jacquet, M, Janssen, ME, Janssen, X, Jemanov, V, Jönsson, L, Johnson, DP, Jung, AW, Jung, H, Kapichine, M, Katzy, J, Kenyon, IR, Kiesling, C, Klein, M, Kleinwort, C, Klimkovich, T, Kluge, T, Knutsson, A, Korbel, V, Kostka, P, Kraemer, M, Krastev, K, Kretzschmar, J, Kropivnitskaya, A, Krüger, K, Landon, MPJ, Lange, W, Laštovička-Medin, G, Laycock, P, Lebedev, A, Leibenguth, G, Lendermann, V, Levonian, S, Li, G, Lindfeld, L, Lipka, K, Liptaj, A, List, B, List, J, Loktionova, N, Lopez-Fernandez, R, Lubimov, V, Lucaci-Timoce, AI, Lytkin, L, Makankine, A, Malinovski, E, Marage, P, Marti, L, Martisikova, M, Martyn, HU, Maxfield, SJ, Mehta, A, Meier, K, Meyer, AB, Meyer, H, Meyer, H, Meyer, J, Michels, V, Mikocki, S, Milcewicz-Mika, I, Mohamed, A, Moreau, F, Morozov, A, Morris, JV, Mozer, MU, Müller, K, Murín, P, Nankov, K, Naroska, B, Naumann, T, Newman, PR, Niebuhr, C, Nikiforov, A, Nowak, G, Nowak, K, Nozicka, M, Oganezov, R, Olivier, B, Olsson, JE, Osman, S, Ozerov, D, Palichik, V, Panagoulias, I, Pandurovic, M, Papadopoulou, T, Pascaud, C, Patel, GD, Peng, H, Perez, E, Astudillo, D, Perieanu, A, Petrukhin, A, Picuric, I, Piec, S, Pitzl, D, Plačakyte, R, Polifka, R, Povh, B, Preda, T, Prideaux, P, Radescu, V, Rahmat, AJ, Raicevic, N, Ravdandorj, T, Reimer, P, Risler, C, Rizvi, E, Robmann, P, Roland, B, Roosen, R, Rostovtsev, A, Rurikova, Z, Rusakov, S, Salek, D, Salvaire, F, Sankey, DPC, Sauter, M, Sauvan, E, Schmidt, S, Schmitt, S, Schmitz, C, Schoeffel, L, Schöning, A, Schultz-Coulon, HC, Sefkow, F, Shaw-West, RN, Sheviakov, I, Shtarkov, LN, Sloan, T, Smiljanic, I, Smirnov, P, Soloviev, Y, South, D, Spaskov, V, Specka, A, Staykova, Z, Steder, M, Stella, B, Stiewe, J, Straumann, U, Sunar, D, Sykora, T, Tchoulakov, V, Thompson, G, Thompson, PD, Toll, T, Tomasz, F, Tran, TH, Traynor, D, Trinh, TN, Truöl, P, Tsakov, I, Tseepeldorj, B, Tsipolitis, G, Tsurin, I, Turnau, J, Tzamariudaki, E, Urban, K, Utkin, D, Valkárová, A, Vallée, C, Van Mechelen, P, Vargas Trevino, A, Vazdik, Y, Vinokurova, S, Volchinski, V, Weber, G, Weber, R, Wegener, D, Werner, C, Wessels, M, Wissing, C, Wolf, R, Wünsch, E, Xella, S, Yeganov, V, Žáček, J, Zálešák, J, Zhang, Z, Zhelezov, A, Zhokin, A, Zhu, YC, Zimmermann, T, Zohrabyan, H & Zomer, F 2008, 'Three- and four-jet production at low x at HERA', European Physical Journal C, vol. 54, no. 3, pp. 389-409. https://doi.org/10.1140/epjc/s10052-008-0544-3
Aaron FD, Aktas A, Alexa C, Andreev V, Antunovic B, Aplin S et al. Three- and four-jet production at low x at HERA. European Physical Journal C. 2008 Apr 1;54(3):389-409. https://doi.org/10.1140/epjc/s10052-008-0544-3
Aaron, F. D. ; Aktas, A. ; Alexa, C. ; Andreev, V. ; Antunovic, B. ; Aplin, S. ; Asmone, A. ; Astvatsatourov, A. ; Backovic, S. ; Baghdasaryan, A. ; Baranov, P. ; Barrelet, E. ; Bartel, W. ; Baudrand, S. ; Beckingham, M. ; Begzsuren, K. ; Behnke, O. ; Behrendt, 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. ; Büsser, F. W. ; 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. ; Deak, M. ; De Boer, Y. ; Delcourt, B. ; Del Degan, M. ; Delvax, J. ; De Roeck, A. ; De Wolf, E. A. ; Diaconu, C. ; Dodonov, V. ; Dubak, A. ; Eckerlin, G. ; Efremenko, V. ; Egli, S. ; Eichler, R. ; Eisele, F. ; 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. ; Franke, G. ; Frisson, T. ; Gabathuler, E. ; Gayler, J. ; Ghazaryan, S. ; Ginzburgskaya, S. ; Glazov, A. ; Glushkov, I. ; Goerlich, L. ; Goettlich, M. ; Gogitidze, N. ; Gorbounov, S. ; Gouzevitch, M. ; Grab, C. ; Greenshaw, T. ; Grell, B. R. ; Grindhammer, G. ; Habib, S. ; Haidt, D. ; Hansson, M. ; Heinzelmann, G. ; 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. ; Jönsson, L. ; Johnson, D. P. ; Jung, A. W. ; Jung, H. ; Kapichine, M. ; Katzy, J. ; Kenyon, I. R. ; Kiesling, C. ; Klein, M. ; Kleinwort, C. ; Klimkovich, T. ; Kluge, T. ; Knutsson, A. ; Korbel, V. ; Kostka, P. ; Kraemer, M. ; Krastev, K. ; Kretzschmar, J. ; Kropivnitskaya, A. ; Krüger, K. ; Landon, M. P J ; Lange, W. ; Laštovička-Medin, G. ; Laycock, P. ; Lebedev, A. ; Leibenguth, G. ; Lendermann, V. ; Levonian, S. ; Li, G. ; Lindfeld, L. ; Lipka, K. ; Liptaj, A. ; List, B. ; List, J. ; Loktionova, N. ; Lopez-Fernandez, R. ; Lubimov, V. ; Lucaci-Timoce, A. I. ; Lytkin, L. ; Makankine, A. ; Malinovski, E. ; Marage, P. ; Marti, L. ; Martisikova, M. ; Martyn, H. U. ; Maxfield, S. J. ; Mehta, A. ; Meier, K. ; Meyer, A. B. ; Meyer, H. ; Meyer, H. ; Meyer, J. ; Michels, V. ; Mikocki, S. ; Milcewicz-Mika, I. ; Mohamed, A. ; Moreau, F. ; Morozov, A. ; Morris, J. V. ; Mozer, M. U. ; Müller, K. ; Murín, P. ; Nankov, K. ; Naroska, B. ; Naumann, T. ; Newman, P. R. ; Niebuhr, C. ; Nikiforov, A. ; Nowak, G. ; Nowak, K. ; Nozicka, M. ; Oganezov, R. ; Olivier, B. ; Olsson, J. E. ; Osman, S. ; Ozerov, D. ; Palichik, V. ; Panagoulias, I. ; Pandurovic, M. ; Papadopoulou, T. ; Pascaud, C. ; Patel, G. D. ; Peng, H. ; Perez, E. ; Astudillo, Daniel ; Perieanu, A. ; Petrukhin, A. ; Picuric, I. ; Piec, S. ; Pitzl, D. ; Plačakyte, R. ; Polifka, R. ; Povh, B. ; Preda, T. ; Prideaux, P. ; Radescu, V. ; Rahmat, A. J. ; Raicevic, N. ; Ravdandorj, T. ; Reimer, P. ; Risler, C. ; Rizvi, E. ; Robmann, P. ; Roland, B. ; Roosen, R. ; Rostovtsev, A. ; Rurikova, Z. ; Rusakov, S. ; Salek, D. ; Salvaire, F. ; Sankey, D. P C ; Sauter, M. ; Sauvan, E. ; Schmidt, S. ; Schmitt, S. ; Schmitz, C. ; Schoeffel, L. ; Schöning, A. ; Schultz-Coulon, H. C. ; Sefkow, F. ; Shaw-West, R. N. ; Sheviakov, I. ; Shtarkov, L. N. ; Sloan, T. ; Smiljanic, I. ; Smirnov, P. ; Soloviev, Y. ; South, D. ; Spaskov, V. ; Specka, A. ; Staykova, Z. ; Steder, M. ; Stella, B. ; Stiewe, J. ; Straumann, U. ; Sunar, D. ; Sykora, T. ; Tchoulakov, V. ; Thompson, G. ; Thompson, P. D. ; Toll, T. ; Tomasz, F. ; Tran, T. H. ; Traynor, D. ; Trinh, T. N. ; Truöl, P. ; Tsakov, I. ; Tseepeldorj, B. ; Tsipolitis, G. ; Tsurin, I. ; Turnau, J. ; Tzamariudaki, E. ; Urban, K. ; Utkin, D. ; Valkárová, A. ; Vallée, C. ; Van Mechelen, P. ; Vargas Trevino, A. ; Vazdik, Y. ; Vinokurova, S. ; Volchinski, V. ; Weber, G. ; Weber, R. ; Wegener, D. ; Werner, C. ; Wessels, M. ; Wissing, C. ; Wolf, R. ; Wünsch, E. ; Xella, S. ; Yeganov, V. ; Žáček, J. ; Zálešák, J. ; Zhang, Z. ; Zhelezov, A. ; Zhokin, A. ; Zhu, Y. C. ; Zimmermann, T. ; Zohrabyan, H. ; Zomer, F. / Three- and four-jet production at low x at HERA. In: European Physical Journal C. 2008 ; Vol. 54, No. 3. pp. 389-409.
@article{4b70a7bed13c44268387cf6bb478c81b,
title = "Three- and four-jet production at low x at HERA",
abstract = "Three- and four-jet production is measured in deep-inelastic ep scattering at low x and Q2 with the H1 detector using an integrated luminosity of 44.2 pb-1. Several phase space regions are selected for the three-jet analysis in order to study the underlying parton dynamics from global topologies to the more restrictive regions of forward jets close to the proton direction. The measurements of cross sections for events with at least three jets are compared to fixed order QCD predictions of O(αs 2) and O(αs 3) and with Monte Carlo simulation programs where higher order effects are approximated by parton showers. A good overall description is provided by the O(α s 3) calculation. Too few events are predicted at the lowest x ∼ 10-4, especially for topologies with two forward jets. This hints to large contributions at low x from initial state radiation of gluons close to the proton direction and unordered in transverse momentum. The Monte Carlo program in which gluon radiation is generated by the colour dipole model gives a good description of both the three- and the four-jet data in absolute normalisation and shape.",
author = "Aaron, {F. D.} and A. Aktas and C. Alexa and V. Andreev and B. Antunovic and S. Aplin and A. Asmone and A. Astvatsatourov and S. Backovic and A. Baghdasaryan and P. Baranov and E. Barrelet and W. Bartel and S. Baudrand and M. Beckingham and K. Begzsuren and O. Behnke and O. Behrendt and A. Belousov and N. Berger and Bizot, {J. C.} and Boenig, {M. O.} and V. Boudry and I. Bozovic-Jelisavcic and J. Bracinik and G. Brandt and M. Brinkmann and V. Brisson and D. Bruncko and B{\"u}sser, {F. W.} and A. Bunyatyan and G. Buschhorn and L. Bystritskaya and Campbell, {A. J.} and {Cantun Avila}, {K. B.} and F. Cassol-Brunner and K. Cerny and V. Cerny and V. Chekelian and A. Cholewa and Contreras, {J. G.} and Coughlan, {J. A.} and G. Cozzika and J. Cvach and Dainton, {J. B.} and K. Daum and M. Deak and {De Boer}, Y. and B. Delcourt and {Del Degan}, M. and J. Delvax and {De Roeck}, A. and {De Wolf}, {E. A.} and C. Diaconu and V. Dodonov and A. Dubak and G. Eckerlin and V. Efremenko and S. Egli and R. Eichler and F. Eisele and A. Eliseev and E. Elsen and S. Essenov and A. Falkiewicz and Faulkner, {P. J W} and L. Favart and A. Fedotov and R. Felst and J. Feltesse and J. Ferencei and L. Finke and M. Fleischer and A. Fomenko and G. Franke and T. Frisson and E. Gabathuler and J. Gayler and S. Ghazaryan and S. Ginzburgskaya and A. Glazov and I. Glushkov and L. Goerlich and M. Goettlich and N. Gogitidze and S. Gorbounov and M. Gouzevitch and C. Grab and T. Greenshaw and Grell, {B. R.} and G. Grindhammer and S. Habib and D. Haidt and M. Hansson and G. Heinzelmann and C. Helebrant and Henderson, {R. C W} and H. Henschel and G. Herrera and M. Hildebrandt and Hiller, {K. H.} and D. Hoffmann and R. Horisberger and A. Hovhannisyan and T. Hreus and M. Jacquet and Janssen, {M. E.} and X. Janssen and V. Jemanov and L. J{\"o}nsson and Johnson, {D. P.} and Jung, {A. W.} and H. Jung and M. Kapichine and J. Katzy and Kenyon, {I. R.} and C. Kiesling and M. Klein and C. Kleinwort and T. Klimkovich and T. Kluge and A. Knutsson and V. Korbel and P. Kostka and M. Kraemer and K. Krastev and J. Kretzschmar and A. Kropivnitskaya and K. Kr{\"u}ger and Landon, {M. P J} and W. Lange and G. Laštovička-Medin and P. Laycock and A. Lebedev and G. Leibenguth and V. Lendermann and S. Levonian and G. Li and L. Lindfeld and K. Lipka and A. Liptaj and B. List and J. List and N. Loktionova and R. Lopez-Fernandez and V. Lubimov and Lucaci-Timoce, {A. I.} and L. Lytkin and A. Makankine and E. Malinovski and P. Marage and L. Marti and M. Martisikova and Martyn, {H. U.} and Maxfield, {S. J.} and A. Mehta and K. Meier and Meyer, {A. B.} and H. Meyer and H. Meyer and J. Meyer and V. Michels and S. Mikocki and I. Milcewicz-Mika and A. Mohamed and F. Moreau and A. Morozov and Morris, {J. V.} and Mozer, {M. U.} and K. M{\"u}ller and P. Mur{\'i}n and K. Nankov and B. Naroska and T. Naumann and Newman, {P. R.} and C. Niebuhr and A. Nikiforov and G. Nowak and K. Nowak and M. Nozicka and R. Oganezov and B. Olivier and Olsson, {J. E.} and S. Osman and D. Ozerov and V. Palichik and I. Panagoulias and M. Pandurovic and T. Papadopoulou and C. Pascaud and Patel, {G. D.} and H. Peng and E. Perez and Daniel Astudillo and A. Perieanu and A. Petrukhin and I. Picuric and S. Piec and D. Pitzl and R. Plačakyte and R. Polifka and B. Povh and T. Preda and P. Prideaux and V. Radescu and Rahmat, {A. J.} and N. Raicevic and T. Ravdandorj and P. Reimer and C. Risler and E. Rizvi and P. Robmann and B. Roland and R. Roosen and A. Rostovtsev and Z. Rurikova and S. Rusakov and D. Salek and F. Salvaire and Sankey, {D. P C} and M. Sauter and E. Sauvan and S. Schmidt and S. Schmitt and C. Schmitz and L. Schoeffel and A. Sch{\"o}ning and Schultz-Coulon, {H. C.} and F. Sefkow and Shaw-West, {R. N.} and I. Sheviakov and Shtarkov, {L. N.} and T. Sloan and I. Smiljanic and P. Smirnov and Y. Soloviev and D. South and V. Spaskov and A. Specka and Z. Staykova and M. Steder and B. Stella and J. Stiewe and U. Straumann and D. Sunar and T. Sykora and V. Tchoulakov and G. Thompson and Thompson, {P. D.} and T. Toll and F. Tomasz and Tran, {T. H.} and D. Traynor and Trinh, {T. N.} and P. Tru{\"o}l and I. Tsakov and B. Tseepeldorj and G. Tsipolitis and I. Tsurin and J. Turnau and E. Tzamariudaki and K. Urban and D. Utkin and A. Valk{\'a}rov{\'a} and C. Vall{\'e}e and {Van Mechelen}, P. and {Vargas Trevino}, A. and Y. Vazdik and S. Vinokurova and V. Volchinski and G. Weber and R. Weber and D. Wegener and C. Werner and M. Wessels and C. Wissing and R. Wolf and E. W{\"u}nsch and S. Xella and V. Yeganov and J. Ž{\'a}ček and J. Z{\'a}leš{\'a}k and Z. Zhang and A. Zhelezov and A. Zhokin and Zhu, {Y. C.} and T. Zimmermann and H. Zohrabyan and F. Zomer",
year = "2008",
month = "4",
day = "1",
doi = "10.1140/epjc/s10052-008-0544-3",
language = "English",
volume = "54",
pages = "389--409",
journal = "European Physical Journal C",
issn = "1434-6044",
publisher = "Springer New York",
number = "3",

}

TY - JOUR

T1 - Three- and four-jet production at low x at HERA

AU - Aaron, F. D.

AU - Aktas, A.

AU - Alexa, C.

AU - Andreev, V.

AU - Antunovic, B.

AU - Aplin, S.

AU - Asmone, A.

AU - Astvatsatourov, A.

AU - Backovic, S.

AU - Baghdasaryan, A.

AU - Baranov, P.

AU - Barrelet, E.

AU - Bartel, W.

AU - Baudrand, S.

AU - Beckingham, M.

AU - Begzsuren, K.

AU - Behnke, O.

AU - Behrendt, O.

AU - Belousov, A.

AU - Berger, N.

AU - Bizot, J. C.

AU - Boenig, M. O.

AU - Boudry, V.

AU - Bozovic-Jelisavcic, I.

AU - Bracinik, J.

AU - Brandt, G.

AU - Brinkmann, M.

AU - Brisson, V.

AU - Bruncko, D.

AU - Büsser, F. W.

AU - Bunyatyan, A.

AU - Buschhorn, G.

AU - Bystritskaya, L.

AU - Campbell, A. J.

AU - Cantun Avila, K. B.

AU - Cassol-Brunner, F.

AU - Cerny, K.

AU - Cerny, V.

AU - Chekelian, V.

AU - Cholewa, A.

AU - Contreras, J. G.

AU - Coughlan, J. A.

AU - Cozzika, G.

AU - Cvach, J.

AU - Dainton, J. B.

AU - Daum, K.

AU - Deak, M.

AU - De Boer, Y.

AU - Delcourt, B.

AU - Del Degan, M.

AU - Delvax, J.

AU - De Roeck, A.

AU - De Wolf, E. A.

AU - Diaconu, C.

AU - Dodonov, V.

AU - Dubak, A.

AU - Eckerlin, G.

AU - Efremenko, V.

AU - Egli, S.

AU - Eichler, R.

AU - Eisele, F.

AU - Eliseev, A.

AU - Elsen, E.

AU - Essenov, S.

AU - Falkiewicz, A.

AU - Faulkner, P. J W

AU - Favart, L.

AU - Fedotov, A.

AU - Felst, R.

AU - Feltesse, J.

AU - Ferencei, J.

AU - Finke, L.

AU - Fleischer, M.

AU - Fomenko, A.

AU - Franke, G.

AU - Frisson, T.

AU - Gabathuler, E.

AU - Gayler, J.

AU - Ghazaryan, S.

AU - Ginzburgskaya, S.

AU - Glazov, A.

AU - Glushkov, I.

AU - Goerlich, L.

AU - Goettlich, M.

AU - Gogitidze, N.

AU - Gorbounov, S.

AU - Gouzevitch, M.

AU - Grab, C.

AU - Greenshaw, T.

AU - Grell, B. R.

AU - Grindhammer, G.

AU - Habib, S.

AU - Haidt, D.

AU - Hansson, M.

AU - Heinzelmann, G.

AU - Helebrant, C.

AU - Henderson, R. C W

AU - Henschel, H.

AU - Herrera, G.

AU - Hildebrandt, M.

AU - Hiller, K. H.

AU - Hoffmann, D.

AU - Horisberger, R.

AU - Hovhannisyan, A.

AU - Hreus, T.

AU - Jacquet, M.

AU - Janssen, M. E.

AU - Janssen, X.

AU - Jemanov, V.

AU - Jönsson, L.

AU - Johnson, D. P.

AU - Jung, A. W.

AU - Jung, H.

AU - Kapichine, M.

AU - Katzy, J.

AU - Kenyon, I. R.

AU - Kiesling, C.

AU - Klein, M.

AU - Kleinwort, C.

AU - Klimkovich, T.

AU - Kluge, T.

AU - Knutsson, A.

AU - Korbel, V.

AU - Kostka, P.

AU - Kraemer, M.

AU - Krastev, K.

AU - Kretzschmar, J.

AU - Kropivnitskaya, A.

AU - Krüger, K.

AU - Landon, M. P J

AU - Lange, W.

AU - Laštovička-Medin, G.

AU - Laycock, P.

AU - Lebedev, A.

AU - Leibenguth, G.

AU - Lendermann, V.

AU - Levonian, S.

AU - Li, G.

AU - Lindfeld, L.

AU - Lipka, K.

AU - Liptaj, A.

AU - List, B.

AU - List, J.

AU - Loktionova, N.

AU - Lopez-Fernandez, R.

AU - Lubimov, V.

AU - Lucaci-Timoce, A. I.

AU - Lytkin, L.

AU - Makankine, A.

AU - Malinovski, E.

AU - Marage, P.

AU - Marti, L.

AU - Martisikova, M.

AU - Martyn, H. U.

AU - Maxfield, S. J.

AU - Mehta, A.

AU - Meier, K.

AU - Meyer, A. B.

AU - Meyer, H.

AU - Meyer, H.

AU - Meyer, J.

AU - Michels, V.

AU - Mikocki, S.

AU - Milcewicz-Mika, I.

AU - Mohamed, A.

AU - Moreau, F.

AU - Morozov, A.

AU - Morris, J. V.

AU - Mozer, M. U.

AU - Müller, K.

AU - Murín, P.

AU - Nankov, K.

AU - Naroska, B.

AU - Naumann, T.

AU - Newman, P. R.

AU - Niebuhr, C.

AU - Nikiforov, A.

AU - Nowak, G.

AU - Nowak, K.

AU - Nozicka, M.

AU - Oganezov, R.

AU - Olivier, B.

AU - Olsson, J. E.

AU - Osman, S.

AU - Ozerov, D.

AU - Palichik, V.

AU - Panagoulias, I.

AU - Pandurovic, M.

AU - Papadopoulou, T.

AU - Pascaud, C.

AU - Patel, G. D.

AU - Peng, H.

AU - Perez, E.

AU - Astudillo, Daniel

AU - Perieanu, A.

AU - Petrukhin, A.

AU - Picuric, I.

AU - Piec, S.

AU - Pitzl, D.

AU - Plačakyte, R.

AU - Polifka, R.

AU - Povh, B.

AU - Preda, T.

AU - Prideaux, P.

AU - Radescu, V.

AU - Rahmat, A. J.

AU - Raicevic, N.

AU - Ravdandorj, T.

AU - Reimer, P.

AU - Risler, C.

AU - Rizvi, E.

AU - Robmann, P.

AU - Roland, B.

AU - Roosen, R.

AU - Rostovtsev, A.

AU - Rurikova, Z.

AU - Rusakov, S.

AU - Salek, D.

AU - Salvaire, F.

AU - Sankey, D. P C

AU - Sauter, M.

AU - Sauvan, E.

AU - Schmidt, S.

AU - Schmitt, S.

AU - Schmitz, C.

AU - Schoeffel, L.

AU - Schöning, A.

AU - Schultz-Coulon, H. C.

AU - Sefkow, F.

AU - Shaw-West, R. N.

AU - Sheviakov, I.

AU - Shtarkov, L. N.

AU - Sloan, T.

AU - Smiljanic, I.

AU - Smirnov, P.

AU - Soloviev, Y.

AU - South, D.

AU - Spaskov, V.

AU - Specka, A.

AU - Staykova, Z.

AU - Steder, M.

AU - Stella, B.

AU - Stiewe, J.

AU - Straumann, U.

AU - Sunar, D.

AU - Sykora, T.

AU - Tchoulakov, V.

AU - Thompson, G.

AU - Thompson, P. D.

AU - Toll, T.

AU - Tomasz, F.

AU - Tran, T. H.

AU - Traynor, D.

AU - Trinh, T. N.

AU - Truöl, P.

AU - Tsakov, I.

AU - Tseepeldorj, B.

AU - Tsipolitis, G.

AU - Tsurin, I.

AU - Turnau, J.

AU - Tzamariudaki, E.

AU - Urban, K.

AU - Utkin, D.

AU - Valkárová, A.

AU - Vallée, C.

AU - Van Mechelen, P.

AU - Vargas Trevino, A.

AU - Vazdik, Y.

AU - Vinokurova, S.

AU - Volchinski, V.

AU - Weber, G.

AU - Weber, R.

AU - Wegener, D.

AU - Werner, C.

AU - Wessels, M.

AU - Wissing, C.

AU - Wolf, R.

AU - Wünsch, E.

AU - Xella, S.

AU - Yeganov, V.

AU - Žáček, J.

AU - Zálešák, J.

AU - Zhang, Z.

AU - Zhelezov, A.

AU - Zhokin, A.

AU - Zhu, Y. C.

AU - Zimmermann, T.

AU - Zohrabyan, H.

AU - Zomer, F.

PY - 2008/4/1

Y1 - 2008/4/1

N2 - Three- and four-jet production is measured in deep-inelastic ep scattering at low x and Q2 with the H1 detector using an integrated luminosity of 44.2 pb-1. Several phase space regions are selected for the three-jet analysis in order to study the underlying parton dynamics from global topologies to the more restrictive regions of forward jets close to the proton direction. The measurements of cross sections for events with at least three jets are compared to fixed order QCD predictions of O(αs 2) and O(αs 3) and with Monte Carlo simulation programs where higher order effects are approximated by parton showers. A good overall description is provided by the O(α s 3) calculation. Too few events are predicted at the lowest x ∼ 10-4, especially for topologies with two forward jets. This hints to large contributions at low x from initial state radiation of gluons close to the proton direction and unordered in transverse momentum. The Monte Carlo program in which gluon radiation is generated by the colour dipole model gives a good description of both the three- and the four-jet data in absolute normalisation and shape.

AB - Three- and four-jet production is measured in deep-inelastic ep scattering at low x and Q2 with the H1 detector using an integrated luminosity of 44.2 pb-1. Several phase space regions are selected for the three-jet analysis in order to study the underlying parton dynamics from global topologies to the more restrictive regions of forward jets close to the proton direction. The measurements of cross sections for events with at least three jets are compared to fixed order QCD predictions of O(αs 2) and O(αs 3) and with Monte Carlo simulation programs where higher order effects are approximated by parton showers. A good overall description is provided by the O(α s 3) calculation. Too few events are predicted at the lowest x ∼ 10-4, especially for topologies with two forward jets. This hints to large contributions at low x from initial state radiation of gluons close to the proton direction and unordered in transverse momentum. The Monte Carlo program in which gluon radiation is generated by the colour dipole model gives a good description of both the three- and the four-jet data in absolute normalisation and shape.

UR - http://www.scopus.com/inward/record.url?scp=41249099946&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=41249099946&partnerID=8YFLogxK

U2 - 10.1140/epjc/s10052-008-0544-3

DO - 10.1140/epjc/s10052-008-0544-3

M3 - Article

AN - SCOPUS:41249099946

VL - 54

SP - 389

EP - 409

JO - European Physical Journal C

JF - European Physical Journal C

SN - 1434-6044

IS - 3

ER -