Multi-electron production at high transverse momenta in ep collisions at HERA

A Aktas; V Andreev; T Anthonis; A Asmone; A Babaev; S Backovic; J Bahr; P Baranov; E Barrelet; W Bartel; S Baumgartner; J Becker; M Beckingham; O Behnke; O Behrendt; A Belousov; C Berger; T Berndt; JC Bizot; J Bohme; MO Boenig; V Boudry; J Bracinik; W Braunschweig; V Brisson; HB Broker; DP Brown; D Bruncko; FW Busser; A Bunyatyan; G Buschhorn; L Bystritskaya; AJ Campbell; S Caron; F Cassol-Brunner; V Chekelian; D Clarke; C Collard; JG Contreras; YR Coppens; JA Coughlan; MC Cousinou; BE Cox; G Cozzika; J Cvach; JB Dainton; WD Dau; K Daum; B Delcourt; N Delerue; R Demirchyan; A De Roeck; EA De Wolf; C Diaconu; J Dingfelder; V Dodonov; JD Dowell; A Dubak; C Duprel; G Eckerlin; V Efremenko; S Egli; R Eichler; F Eisele; M Ellerbrock; E Elsen; M Erdmann; W Erdmann; PJW Faulkner; L Favart; A Fedotov; R Felst; J Ferencei; M Fleischer; P Fleischmann; YH Fleming; G Flucke; G Flugge; A Fomenko; I Foresti; J Formanek; G Franke; G Frising; E Gabathuler; K Gabathuler; J Garvey; J Gassner; J Gayler; R Gerhards; C Gerlich; S Ghazaryan; L Goerlich; N Gogitidze; S Gorbounov; C Grab; V Grabski; H Grassler; T Greenshaw; M Gregori; G Grindhammer; D Haidt; L Hajduk; J Haller; G Heinzelmann; RCW Henderson; H Henschel; O Henshaw; R Heremans; G Herrera; I Herynek; M Hildebrandt; KH Hiller; J Hladky; P Hoting; D Hoffmann; R Horisberger; A Hovhannisyan; M Ibbotson; M Jacquet; L Janauschek; X Janssen; V Jemanov; Leif Jönsson; C Johnson; DP Johnson; Hannes Jung; D Kant; M Kapichine; Martin Karlsson; J Katzy; F Keil; N Keller; J Kennedy; IR Kenyon; C Kiesling; M Klein; C Kleinwort; T Kluge; G Knies; B Koblitz; SD Kolya; V Korbel; P Kostka; R Koutouev; A Kropivnitskaya; J Kroseberg; J Kueckens; T Kuhr; MPJ Landon; W Lange; T Lastovicka; P Laycock; A Lebedev; B Leissner; R Lemrani; V Lendermann; S Levonian; B List; E Lobodzinska; N Loktionova; R Lopez-Fernandez; V Lubimov; H Lueders; S Luders; D Luke; L Lytkin; A Makankine; N Malden; E Malinovski; S Mangano; P Marage; J Marks; R Marshall; HU Martyn; J Martyniak; SJ Maxfield; D Meer; A Mehta; K Meier; AB Meyer; H Meyer; J Meyer; S Michine; S Mikocki; D Milstead; F Moreau; A Morozov; JV Morris; K Muller; P Murin; V Nagovizin; B Naroska; J Naumann; T Naumann; PR Newman; F Niebergall; C Niebuhr; D Nikitin; G Nowak; M Nozicka; B Olivier; JE Olsson; D Ozerov; C Pascaud; GD Patel; M Peez; E Perez; A Petrukhin; D Pitzl; R Poschl; B Povh; N Raicevic; J Rauschenberger; P Reimer; B Reisert; C Risler; E Rizvi; P Robmann; R Roosen; A Rostovtsev; S Rusakov; K Rybicki; DPC Sankey; E Sauvan; S Schatzel; J Scheins; FP Schilling; P Schleper; SS Schmidt; S Schmitt; M Schneider; L Schoeffel; A Schoning; V Schroder; HC Schultz-Coulon; C Schwanenberger; K Sedlak; F Sefkow; I Sheviakov; LN Shtarkov; Y Sirois; T Sloan; P Smirnov; Y Soloviev; D South; V Spaskov; A Specka; H Spitzer; R Stamen; B Stella; J Stiewe; I Strauch; U Straumann; G Thompson; PD Thompson; F Tomasz; D Traynor; P Truol; G Tsipolitis; I Tsurin; J Turnau; JE Turney; E Tzamariudaki; A Uraev; M Urban; A Usik; S Valkar; A Valkarova; C Vallee; P Van Mechelen; AV Trevino; S Vassiliev; Y Vazdik; C Veelken; A Vest; A Vichnevski; V Volchinski; K Wacker; J Wagner; B Waugh; G Weber; R Weber; D Wegener; C Werner; N Werner; M Wessels; B Wessling; M Winde; GG Winter; C Wissing; EE Woehrling; E Wunsch; J Zacek; J Zalesak; Z Zhang; A Zhokin; F Zomer; M zur Nedden

doi:10.1140/epjc/s2003-01326-x

Multi-electron production at high transverse momenta in ep collisions at HERA

A Aktas, V Andreev, T Anthonis, A Asmone, A Babaev, S Backovic, J Bahr, P Baranov, E Barrelet, W Bartel, S Baumgartner, J Becker, M Beckingham, O Behnke, O Behrendt, A Belousov, C Berger, T Berndt, JC Bizot, J BohmeMO Boenig, V Boudry, J Bracinik, W Braunschweig, V Brisson, HB Broker, DP Brown, D Bruncko, FW Busser, A Bunyatyan, G Buschhorn, L Bystritskaya, AJ Campbell, S Caron, F Cassol-Brunner, V Chekelian, D Clarke, C Collard, JG Contreras, YR Coppens, JA Coughlan, MC Cousinou, BE Cox, G Cozzika, J Cvach, JB Dainton, WD Dau, K Daum, B Delcourt, N Delerue, R Demirchyan, A De Roeck, EA De Wolf, C Diaconu, J Dingfelder, V Dodonov, JD Dowell, A Dubak, C Duprel, G Eckerlin, V Efremenko, S Egli, R Eichler, F Eisele, M Ellerbrock, E Elsen, M Erdmann, W Erdmann, PJW Faulkner, L Favart, A Fedotov, R Felst, J Ferencei, M Fleischer, P Fleischmann, YH Fleming, G Flucke, G Flugge, A Fomenko, I Foresti, J Formanek, G Franke, G Frising, E Gabathuler, K Gabathuler, J Garvey, J Gassner, J Gayler, R Gerhards, C Gerlich, S Ghazaryan, L Goerlich, N Gogitidze, S Gorbounov, C Grab, V Grabski, H Grassler, T Greenshaw, M Gregori, G Grindhammer, D Haidt, L Hajduk, J Haller, G Heinzelmann, RCW Henderson, H Henschel, O Henshaw, R Heremans, G Herrera, I Herynek, M Hildebrandt, KH Hiller, J Hladky, P Hoting, D Hoffmann, R Horisberger, A Hovhannisyan, M Ibbotson, M Jacquet, L Janauschek, X Janssen, V Jemanov, Leif Jönsson, C Johnson, DP Johnson, Hannes Jung, D Kant, M Kapichine, Martin Karlsson, J Katzy, F Keil, N Keller, J Kennedy, IR Kenyon, C Kiesling, M Klein, C Kleinwort, T Kluge, G Knies, B Koblitz, SD Kolya, V Korbel, P Kostka, R Koutouev, A Kropivnitskaya, J Kroseberg, J Kueckens, T Kuhr, MPJ Landon, W Lange, T Lastovicka, P Laycock, A Lebedev, B Leissner, R Lemrani, V Lendermann, S Levonian, B List, E Lobodzinska, N Loktionova, R Lopez-Fernandez, V Lubimov, H Lueders, S Luders, D Luke, L Lytkin, A Makankine, N Malden, E Malinovski, S Mangano, P Marage, J Marks, R Marshall, HU Martyn, J Martyniak, SJ Maxfield, D Meer, A Mehta, K Meier, AB Meyer, H Meyer, J Meyer, S Michine, S Mikocki, D Milstead, F Moreau, A Morozov, JV Morris, K Muller, P Murin, V Nagovizin, B Naroska, J Naumann, T Naumann, PR Newman, F Niebergall, C Niebuhr, D Nikitin, G Nowak, M Nozicka, B Olivier, JE Olsson, D Ozerov, C Pascaud, GD Patel, M Peez, E Perez, A Petrukhin, D Pitzl, R Poschl, B Povh, N Raicevic, J Rauschenberger, P Reimer, B Reisert, C Risler, E Rizvi, P Robmann, R Roosen, A Rostovtsev, S Rusakov, K Rybicki, DPC Sankey, E Sauvan, S Schatzel, J Scheins, FP Schilling, P Schleper, SS Schmidt, S Schmitt, M Schneider, L Schoeffel, A Schoning, V Schroder, HC Schultz-Coulon, C Schwanenberger, K Sedlak, F Sefkow, I Sheviakov, LN Shtarkov, Y Sirois, T Sloan, P Smirnov, Y Soloviev, D South, V Spaskov, A Specka, H Spitzer, R Stamen, B Stella, J Stiewe, I Strauch, U Straumann, G Thompson, PD Thompson, F Tomasz, D Traynor, P Truol, G Tsipolitis, I Tsurin, J Turnau, JE Turney, E Tzamariudaki, A Uraev, M Urban, A Usik, S Valkar, A Valkarova, C Vallee, P Van Mechelen, AV Trevino, S Vassiliev, Y Vazdik, C Veelken, A Vest, A Vichnevski, V Volchinski, K Wacker, J Wagner, B Waugh, G Weber, R Weber, D Wegener, C Werner, N Werner, M Wessels, B Wessling, M Winde, GG Winter, C Wissing, EE Woehrling, E Wunsch, J Zacek, J Zalesak, Z Zhang, A Zhokin, F Zomer, M zur Nedden

Particle and nuclear physics

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

Abstract

Multi-electron production is studied at high electron transverse momentum in positron- and electron-proton collisions using the H1 detector at HERA. The data correspond to an integrated luminosity of 115 pb(-1). Di-electron and tri-electron event yields are measured. Cross sections are derived in a restricted phase space region dominated by photon-photon collisions. In general good agreement is found with the Standard Model predictions. However, for electron pair invariant masses above 100 GeV, three di-electron events and three tri-electron events are observed, compared to Standard Model expectations of 0.30 +/- 0.04 and 0.23 +/- 0.04, respectively.

Original language	English
Pages (from-to)	17-29
Journal	European Physical Journal C. Particles and Fields
Volume	31
Issue number	1
DOIs	https://doi.org/10.1140/epjc/s2003-01326-x
Publication status	Published - 2003

Subject classification (UKÄ)

Subatomic Physics

Access to Document

10.1140/epjc/s2003-01326-x

Cite this

Aktas, A., Andreev, V., Anthonis, T., Asmone, A., Babaev, A., Backovic, S., Bahr, J., Baranov, P., Barrelet, E., Bartel, W., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, C., Berndt, T., Bizot, JC., ... zur Nedden, M. (2003). Multi-electron production at high transverse momenta in ep collisions at HERA. European Physical Journal C. Particles and Fields, 31(1), 17-29. https://doi.org/10.1140/epjc/s2003-01326-x

@article{dd7eefcc1e26454a979517ffd5aaa433,

title = "Multi-electron production at high transverse momenta in ep collisions at HERA",

abstract = "Multi-electron production is studied at high electron transverse momentum in positron- and electron-proton collisions using the H1 detector at HERA. The data correspond to an integrated luminosity of 115 pb(-1). Di-electron and tri-electron event yields are measured. Cross sections are derived in a restricted phase space region dominated by photon-photon collisions. In general good agreement is found with the Standard Model predictions. However, for electron pair invariant masses above 100 GeV, three di-electron events and three tri-electron events are observed, compared to Standard Model expectations of 0.30 +/- 0.04 and 0.23 +/- 0.04, respectively.",

author = "A Aktas and V Andreev and T Anthonis and A Asmone and A Babaev and S Backovic and J Bahr and P Baranov and E Barrelet and W Bartel and S Baumgartner and J Becker and M Beckingham and O Behnke and O Behrendt and A Belousov and C Berger and T Berndt and JC Bizot and J Bohme and MO Boenig and V Boudry and J Bracinik and W Braunschweig and V Brisson and HB Broker and DP Brown and D Bruncko and FW Busser and A Bunyatyan and G Buschhorn and L Bystritskaya and AJ Campbell and S Caron and F Cassol-Brunner and V Chekelian and D Clarke and C Collard and JG Contreras and YR Coppens and JA Coughlan and MC Cousinou and BE Cox and G Cozzika and J Cvach and JB Dainton and WD Dau and K Daum and B Delcourt and N Delerue and R Demirchyan and \{De Roeck\}, A and \{De Wolf\}, EA and C Diaconu and J Dingfelder and V Dodonov and JD Dowell and A Dubak and C Duprel and G Eckerlin and V Efremenko and S Egli and R Eichler and F Eisele and M Ellerbrock and E Elsen and M Erdmann and W Erdmann and PJW Faulkner and L Favart and A Fedotov and R Felst and J Ferencei and M Fleischer and P Fleischmann and YH Fleming and G Flucke and G Flugge and A Fomenko and I Foresti and J Formanek and G Franke and G Frising and E Gabathuler and K Gabathuler and J Garvey and J Gassner and J Gayler and R Gerhards and C Gerlich and S Ghazaryan and L Goerlich and N Gogitidze and S Gorbounov and C Grab and V Grabski and H Grassler and T Greenshaw and M Gregori and G Grindhammer and D Haidt and L Hajduk and J Haller and G Heinzelmann and RCW Henderson and H Henschel and O Henshaw and R Heremans and G Herrera and I Herynek and M Hildebrandt and KH Hiller and J Hladky and P Hoting and D Hoffmann and R Horisberger and A Hovhannisyan and M Ibbotson and M Jacquet and L Janauschek and X Janssen and V Jemanov and Leif J{\"o}nsson and C Johnson and DP Johnson and Hannes Jung and D Kant and M Kapichine and Martin Karlsson and J Katzy and F Keil and N Keller and J Kennedy and IR Kenyon and C Kiesling and M Klein and C Kleinwort and T Kluge and G Knies and B Koblitz and SD Kolya and V Korbel and P Kostka and R Koutouev and A Kropivnitskaya and J Kroseberg and J Kueckens and T Kuhr and MPJ Landon and W Lange and T Lastovicka and P Laycock and A Lebedev and B Leissner and R Lemrani and V Lendermann and S Levonian and B List and E Lobodzinska and N Loktionova and R Lopez-Fernandez and V Lubimov and H Lueders and S Luders and D Luke and L Lytkin and A Makankine and N Malden and E Malinovski and S Mangano and P Marage and J Marks and R Marshall and HU Martyn and J Martyniak and SJ Maxfield and D Meer and A Mehta and K Meier and AB Meyer and H Meyer and J Meyer and S Michine and S Mikocki and D Milstead and F Moreau and A Morozov and JV Morris and K Muller and P Murin and V Nagovizin and B Naroska and J Naumann and T Naumann and PR Newman and F Niebergall and C Niebuhr and D Nikitin and G Nowak and M Nozicka and B Olivier and JE Olsson and D Ozerov and C Pascaud and GD Patel and M Peez and E Perez and A Petrukhin and D Pitzl and R Poschl and B Povh and N Raicevic and J Rauschenberger and P Reimer and B Reisert and C Risler and E Rizvi and P Robmann and R Roosen and A Rostovtsev and S Rusakov and K Rybicki and DPC Sankey and E Sauvan and S Schatzel and J Scheins and FP Schilling and P Schleper and SS Schmidt and S Schmitt and M Schneider and L Schoeffel and A Schoning and V Schroder and HC Schultz-Coulon and C Schwanenberger and K Sedlak and F Sefkow and I Sheviakov and LN Shtarkov and Y Sirois and T Sloan and P Smirnov and Y Soloviev and D South and V Spaskov and A Specka and H Spitzer and R Stamen and B Stella and J Stiewe and I Strauch and U Straumann and G Thompson and PD Thompson and F Tomasz and D Traynor and P Truol and G Tsipolitis and I Tsurin and J Turnau and JE Turney and E Tzamariudaki and A Uraev and M Urban and A Usik and S Valkar and A Valkarova and C Vallee and \{Van Mechelen\}, P and AV Trevino and S Vassiliev and Y Vazdik and C Veelken and A Vest and A Vichnevski and V Volchinski and K Wacker and J Wagner and B Waugh and G Weber and R Weber and D Wegener and C Werner and N Werner and M Wessels and B Wessling and M Winde and GG Winter and C Wissing and EE Woehrling and E Wunsch and J Zacek and J Zalesak and Z Zhang and A Zhokin and F Zomer and \{zur Nedden\}, M",

year = "2003",

doi = "10.1140/epjc/s2003-01326-x",

language = "English",

volume = "31",

pages = "17--29",

journal = "European Physical Journal C. Particles and Fields",

issn = "1434-6044",

publisher = "Springer Nature",

number = "1",

}

Aktas, A, Andreev, V, Anthonis, T, Asmone, A, Babaev, A, Backovic, S, Bahr, J, Baranov, P, Barrelet, E, Bartel, W, Baumgartner, S, Becker, J, Beckingham, M, Behnke, O, Behrendt, O, Belousov, A, Berger, C, Berndt, T, Bizot, JC, Bohme, J, Boenig, MO, Boudry, V, Bracinik, J, Braunschweig, W, Brisson, V, Broker, HB, Brown, DP, Bruncko, D, Busser, FW, Bunyatyan, A, Buschhorn, G, Bystritskaya, L, Campbell, AJ, Caron, S, Cassol-Brunner, F, Chekelian, V, Clarke, D, Collard, C, Contreras, JG, Coppens, YR, Coughlan, JA, Cousinou, MC, Cox, BE, Cozzika, G, Cvach, J, Dainton, JB, Dau, WD, Daum, K, Delcourt, B, Delerue, N, Demirchyan, R, De Roeck, A, De Wolf, EA, Diaconu, C, Dingfelder, J, Dodonov, V, Dowell, JD, Dubak, A, Duprel, C, Eckerlin, G, Efremenko, V, Egli, S, Eichler, R, Eisele, F, Ellerbrock, M, Elsen, E, Erdmann, M, Erdmann, W, Faulkner, PJW, Favart, L, Fedotov, A, Felst, R, Ferencei, J, Fleischer, M, Fleischmann, P, Fleming, YH, Flucke, G, Flugge, G, Fomenko, A, Foresti, I, Formanek, J, Franke, G, Frising, G, Gabathuler, E, Gabathuler, K, Garvey, J, Gassner, J, Gayler, J, Gerhards, R, Gerlich, C, Ghazaryan, S, Goerlich, L, Gogitidze, N, Gorbounov, S, Grab, C, Grabski, V, Grassler, H, Greenshaw, T, Gregori, M, Grindhammer, G, Haidt, D, Hajduk, L, Haller, J, Heinzelmann, G, Henderson, RCW, Henschel, H, Henshaw, O, Heremans, R, Herrera, G, Herynek, I, Hildebrandt, M, Hiller, KH, Hladky, J, Hoting, P, Hoffmann, D, Horisberger, R, Hovhannisyan, A, Ibbotson, M, Jacquet, M, Janauschek, L, Janssen, X, Jemanov, V, Jönsson, L, Johnson, C, Johnson, DP, Jung, H, Kant, D, Kapichine, M, Karlsson, M, Katzy, J, Keil, F, Keller, N, Kennedy, J, Kenyon, IR, Kiesling, C, Klein, M, Kleinwort, C, Kluge, T, Knies, G, Koblitz, B, Kolya, SD, Korbel, V, Kostka, P, Koutouev, R, Kropivnitskaya, A, Kroseberg, J, Kueckens, J, Kuhr, T, Landon, MPJ, Lange, W, Lastovicka, T, Laycock, P, Lebedev, A, Leissner, B, Lemrani, R, Lendermann, V, Levonian, S, List, B, Lobodzinska, E, Loktionova, N, Lopez-Fernandez, R, Lubimov, V, Lueders, H, Luders, S, Luke, D, Lytkin, L, Makankine, A, Malden, N, Malinovski, E, Mangano, S, Marage, P, Marks, J, Marshall, R, Martyn, HU, Martyniak, J, Maxfield, SJ, Meer, D, Mehta, A, Meier, K, Meyer, AB, Meyer, H, Meyer, J, Michine, S, Mikocki, S, Milstead, D, Moreau, F, Morozov, A, Morris, JV, Muller, K, Murin, P, Nagovizin, V, Naroska, B, Naumann, J, Naumann, T, Newman, PR, Niebergall, F, Niebuhr, C, Nikitin, D, Nowak, G, Nozicka, M, Olivier, B, Olsson, JE, Ozerov, D, Pascaud, C, Patel, GD, Peez, M, Perez, E, Petrukhin, A, Pitzl, D, Poschl, R, Povh, B, Raicevic, N, Rauschenberger, J, Reimer, P, Reisert, B, Risler, C, Rizvi, E, Robmann, P, Roosen, R, Rostovtsev, A, Rusakov, S, Rybicki, K, Sankey, DPC, Sauvan, E, Schatzel, S, Scheins, J, Schilling, FP, Schleper, P, Schmidt, SS, Schmitt, S, Schneider, M, Schoeffel, L, Schoning, A, Schroder, V, Schultz-Coulon, HC, Schwanenberger, C, Sedlak, K, Sefkow, F, Sheviakov, I, Shtarkov, LN, Sirois, Y, Sloan, T, Smirnov, P, Soloviev, Y, South, D, Spaskov, V, Specka, A, Spitzer, H, Stamen, R, Stella, B, Stiewe, J, Strauch, I, Straumann, U, Thompson, G, Thompson, PD, Tomasz, F, Traynor, D, Truol, P, Tsipolitis, G, Tsurin, I, Turnau, J, Turney, JE, Tzamariudaki, E, Uraev, A, Urban, M, Usik, A, Valkar, S, Valkarova, A, Vallee, C, Van Mechelen, P, Trevino, AV, Vassiliev, S, Vazdik, Y, Veelken, C, Vest, A, Vichnevski, A, Volchinski, V, Wacker, K, Wagner, J, Waugh, B, Weber, G, Weber, R, Wegener, D, Werner, C, Werner, N, Wessels, M, Wessling, B, Winde, M, Winter, GG, Wissing, C, Woehrling, EE, Wunsch, E, Zacek, J, Zalesak, J, Zhang, Z, Zhokin, A, Zomer, F & zur Nedden, M 2003, 'Multi-electron production at high transverse momenta in ep collisions at HERA', European Physical Journal C. Particles and Fields, vol. 31, no. 1, pp. 17-29. https://doi.org/10.1140/epjc/s2003-01326-x

TY - JOUR

T1 - Multi-electron production at high transverse momenta in ep collisions at HERA

AU - Aktas, A

AU - Andreev, V

AU - Anthonis, T

AU - Asmone, A

AU - Babaev, A

AU - Backovic, S

AU - Bahr, J

AU - Baranov, P

AU - Barrelet, E

AU - Bartel, W

AU - Baumgartner, S

AU - Becker, J

AU - Beckingham, M

AU - Behnke, O

AU - Behrendt, O

AU - Belousov, A

AU - Berger, C

AU - Berndt, T

AU - Bizot, JC

AU - Bohme, J

AU - Boenig, MO

AU - Boudry, V

AU - Bracinik, J

AU - Braunschweig, W

AU - Brisson, V

AU - Broker, HB

AU - Brown, DP

AU - Bruncko, D

AU - Busser, FW

AU - Bunyatyan, A

AU - Buschhorn, G

AU - Bystritskaya, L

AU - Campbell, AJ

AU - Caron, S

AU - Cassol-Brunner, F

AU - Chekelian, V

AU - Clarke, D

AU - Collard, C

AU - Contreras, JG

AU - Coppens, YR

AU - Coughlan, JA

AU - Cousinou, MC

AU - Cox, BE

AU - Cozzika, G

AU - Cvach, J

AU - Dainton, JB

AU - Dau, WD

AU - Daum, K

AU - Delcourt, B

AU - Delerue, N

AU - Demirchyan, R

AU - De Roeck, A

AU - De Wolf, EA

AU - Diaconu, C

AU - Dingfelder, J

AU - Dodonov, V

AU - Dowell, JD

AU - Dubak, A

AU - Duprel, C

AU - Eckerlin, G

AU - Efremenko, V

AU - Egli, S

AU - Eichler, R

AU - Eisele, F

AU - Ellerbrock, M

AU - Elsen, E

AU - Erdmann, M

AU - Erdmann, W

AU - Faulkner, PJW

AU - Favart, L

AU - Fedotov, A

AU - Felst, R

AU - Ferencei, J

AU - Fleischer, M

AU - Fleischmann, P

AU - Fleming, YH

AU - Flucke, G

AU - Flugge, G

AU - Fomenko, A

AU - Foresti, I

AU - Formanek, J

AU - Franke, G

AU - Frising, G

AU - Gabathuler, E

AU - Gabathuler, K

AU - Garvey, J

AU - Gassner, J

AU - Gayler, J

AU - Gerhards, R

AU - Gerlich, C

AU - Ghazaryan, S

AU - Goerlich, L

AU - Gogitidze, N

AU - Gorbounov, S

AU - Grab, C

AU - Grabski, V

AU - Grassler, H

AU - Greenshaw, T

AU - Gregori, M

AU - Grindhammer, G

AU - Haidt, D

AU - Hajduk, L

AU - Haller, J

AU - Heinzelmann, G

AU - Henderson, RCW

AU - Henschel, H

AU - Henshaw, O

AU - Heremans, R

AU - Herrera, G

AU - Herynek, I

AU - Hildebrandt, M

AU - Hiller, KH

AU - Hladky, J

AU - Hoting, P

AU - Hoffmann, D

AU - Horisberger, R

AU - Hovhannisyan, A

AU - Ibbotson, M

AU - Jacquet, M

AU - Janauschek, L

AU - Janssen, X

AU - Jemanov, V

AU - Jönsson, Leif

AU - Johnson, C

AU - Johnson, DP

AU - Jung, Hannes

AU - Kant, D

AU - Kapichine, M

AU - Karlsson, Martin

AU - Katzy, J

AU - Keil, F

AU - Keller, N

AU - Kennedy, J

AU - Kenyon, IR

AU - Kiesling, C

AU - Klein, M

AU - Kleinwort, C

AU - Kluge, T

AU - Knies, G

AU - Koblitz, B

AU - Kolya, SD

AU - Korbel, V

AU - Kostka, P

AU - Koutouev, R

AU - Kropivnitskaya, A

AU - Kroseberg, J

AU - Kueckens, J

AU - Kuhr, T

AU - Landon, MPJ

AU - Lange, W

AU - Lastovicka, T

AU - Laycock, P

AU - Lebedev, A

AU - Leissner, B

AU - Lemrani, R

AU - Lendermann, V

AU - Levonian, S

AU - List, B

AU - Lobodzinska, E

AU - Loktionova, N

AU - Lopez-Fernandez, R

AU - Lubimov, V

AU - Lueders, H

AU - Luders, S

AU - Luke, D

AU - Lytkin, L

AU - Makankine, A

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PY - 2003

Y1 - 2003

N2 - Multi-electron production is studied at high electron transverse momentum in positron- and electron-proton collisions using the H1 detector at HERA. The data correspond to an integrated luminosity of 115 pb(-1). Di-electron and tri-electron event yields are measured. Cross sections are derived in a restricted phase space region dominated by photon-photon collisions. In general good agreement is found with the Standard Model predictions. However, for electron pair invariant masses above 100 GeV, three di-electron events and three tri-electron events are observed, compared to Standard Model expectations of 0.30 +/- 0.04 and 0.23 +/- 0.04, respectively.

AB - Multi-electron production is studied at high electron transverse momentum in positron- and electron-proton collisions using the H1 detector at HERA. The data correspond to an integrated luminosity of 115 pb(-1). Di-electron and tri-electron event yields are measured. Cross sections are derived in a restricted phase space region dominated by photon-photon collisions. In general good agreement is found with the Standard Model predictions. However, for electron pair invariant masses above 100 GeV, three di-electron events and three tri-electron events are observed, compared to Standard Model expectations of 0.30 +/- 0.04 and 0.23 +/- 0.04, respectively.

UR - https://www.scopus.com/pages/publications/1242334939

U2 - 10.1140/epjc/s2003-01326-x

DO - 10.1140/epjc/s2003-01326-x

M3 - Article

SN - 1434-6044

VL - 31

SP - 17

EP - 29

JO - European Physical Journal C. Particles and Fields

JF - European Physical Journal C. Particles and Fields

IS - 1

ER -

Multi-electron production at high transverse momenta in ep collisions at HERA

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