Search for lepton flavour violation in ep collisions at HERA

A. Aktas, C. Alexa, V. Andreev, T. Anthonis, B. Antunovic, S. Aplin, A. Asmone, A. Astvatsatourov, A. Babaev, S. Backovic, A. Baghdasaryan, P. Baranov, E. Barrelet, W. Bartel, S. Baudrand, M. Beckingham, K. Begzsuren, O. Behnke, O. Behrendt, A. Belousov & 273 others N. Berger, J. 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, Y. De Boer, B. Delcourt, M. Del Degan, 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. Falkewicz, 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, E. Garutti, J. Gayler, S. Ghazaryan, S. Ginzburgskaya, A. Glazov, I. Glushkov, L. Goerlich, M. Goettlich, N. Gogitidze, S. Gorbounov, M. Gouzevitch, C. Grab, T. Greenshaw, M. Gregori, 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, S. Hussain, 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, G. Knies, 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, L. Lindfeld, K. Lipka, A. Liptaj, B. List, J. List, N. Loktionova, R. Lopez-Fernandez, V. Lubimov, A. I. Lucaci-Timoce, H. Lueders, 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, D. Mladenov, 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, B. Povh, T. Preda, P. Prideaux, A. J. Rahmat, N. Raicevic, T. Ravdandorj, P. Reimer, A. Rimmer, C. Risler, E. Rizvi, P. Robmann, B. Roland, R. Roosen, A. Rostovtsev, Z. Rurikova, S. Rusakov, 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, M. Steder, B. Stella, J. Stiewe, U. Straumann, D. Sunar, T. Sykora, V. Tchoulakov, G. Thompson, P. D. Thompson, T. Toll, F. Tomasz, D. Traynor, T. N. Trinh, P. Truöl, I. Tsakov, B. Tseepeldorj, G. Tsipolitis, I. Tsurin, J. Turnau, E. Tzamariudaki, K. Urban, A. Usik, D. Utkin, A. Valkárová, C. Vallée, P. Van Mechelen, A. Vargas Trevino, Y. Vazdik, S. Vinokurova, V. Volchinski, K. Wacker, G. Weber, R. Weber, D. Wegener, C. Werner, M. Wessels, C. Wissing, R. Wolf, E. Wünsch, S. Xella, W. Yan, V. Yeganov, J. Žáček, J. Zálešák, Z. Zhang, A. Zhelezov, A. Zhokin, Y. C. Zhu, J. Zimmermann, T. Zimmermann, H. Zohrabyan, F. Zomer

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

A search for the lepton flavour violating processes ep → μX and ep → τX is performed with the H1 experiment at HERA. Final states with a muon or tau and a hadronic jet are searched for in a data sample corresponding to an integrated luminosity of 66.5 pb-1 for e+p collisions and 13.7 pb-1 for e-p collisions at a centre-of-mass energy of 319 GeV. No evidence for lepton flavour violation is found. Limits are derived on the mass and the couplings of leptoquarks inducing lepton flavour violation in an extension of the Buchmüller-Rückl-Wyler effective model. Leptoquarks produced in ep collisions with a coupling strength of λ=0.3 and decaying with the same coupling strength to a muon-quark pair or a tau-quark pair are excluded at 95% confidence level up to masses of 459 GeV and 379 GeV, respectively.

Original languageEnglish
Pages (from-to)833-847
Number of pages15
JournalEuropean Physical Journal C
Volume52
Issue number4
DOIs
Publication statusPublished - 1 Dec 2007
Externally publishedYes

Fingerprint

Flavors
leptons
collisions
muons
quarks
center of mass
confidence
Luminance
luminosity
Experiments
energy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Aktas, A., Alexa, C., Andreev, V., Anthonis, T., Antunovic, B., Aplin, S., ... Zomer, F. (2007). Search for lepton flavour violation in ep collisions at HERA. European Physical Journal C, 52(4), 833-847. https://doi.org/10.1140/epjc/s10052-007-0440-2

Search for lepton flavour violation in ep collisions at HERA. / Aktas, A.; Alexa, C.; Andreev, V.; Anthonis, T.; Antunovic, B.; Aplin, S.; Asmone, A.; Astvatsatourov, A.; Babaev, 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.; De Boer, Y.; Delcourt, B.; Del Degan, M.; 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.; Falkewicz, 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.; Garutti, 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.; Gregori, M.; 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.; Hussain, S.; 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.; Knies, G.; 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.; Lindfeld, L.; Lipka, K.; Liptaj, A.; List, B.; List, J.; Loktionova, N.; Lopez-Fernandez, R.; Lubimov, V.; Lucaci-Timoce, A. I.; Lueders, H.; 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.; Mladenov, D.; 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.; Povh, B.; Preda, T.; Prideaux, P.; Rahmat, A. J.; Raicevic, N.; Ravdandorj, T.; Reimer, P.; Rimmer, A.; Risler, C.; Rizvi, E.; Robmann, P.; Roland, B.; Roosen, R.; Rostovtsev, A.; Rurikova, Z.; Rusakov, S.; 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.; Steder, M.; Stella, B.; Stiewe, J.; Straumann, U.; Sunar, D.; Sykora, T.; Tchoulakov, V.; Thompson, G.; Thompson, P. D.; Toll, T.; Tomasz, F.; Traynor, D.; Trinh, T. N.; Truöl, P.; Tsakov, I.; Tseepeldorj, B.; Tsipolitis, G.; Tsurin, I.; Turnau, J.; Tzamariudaki, E.; Urban, K.; Usik, A.; Utkin, D.; Valkárová, A.; Vallée, C.; Van Mechelen, P.; Vargas Trevino, A.; Vazdik, Y.; Vinokurova, S.; Volchinski, V.; Wacker, K.; Weber, G.; Weber, R.; Wegener, D.; Werner, C.; Wessels, M.; Wissing, C.; Wolf, R.; Wünsch, E.; Xella, S.; Yan, W.; Yeganov, V.; Žáček, J.; Zálešák, J.; Zhang, Z.; Zhelezov, A.; Zhokin, A.; Zhu, Y. C.; Zimmermann, J.; Zimmermann, T.; Zohrabyan, H.; Zomer, F.

In: European Physical Journal C, Vol. 52, No. 4, 01.12.2007, p. 833-847.

Research output: Contribution to journalArticle

Aktas, A, Alexa, C, Andreev, V, Anthonis, T, Antunovic, B, Aplin, S, Asmone, A, Astvatsatourov, A, Babaev, 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, De Boer, Y, Delcourt, B, Del Degan, M, 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, Falkewicz, 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, Garutti, 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, Gregori, M, 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, Hussain, S, 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, Knies, G, 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, Lindfeld, L, Lipka, K, Liptaj, A, List, B, List, J, Loktionova, N, Lopez-Fernandez, R, Lubimov, V, Lucaci-Timoce, AI, Lueders, H, 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, Mladenov, D, 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, Povh, B, Preda, T, Prideaux, P, Rahmat, AJ, Raicevic, N, Ravdandorj, T, Reimer, P, Rimmer, A, Risler, C, Rizvi, E, Robmann, P, Roland, B, Roosen, R, Rostovtsev, A, Rurikova, Z, Rusakov, S, 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, Steder, M, Stella, B, Stiewe, J, Straumann, U, Sunar, D, Sykora, T, Tchoulakov, V, Thompson, G, Thompson, PD, Toll, T, Tomasz, F, Traynor, D, Trinh, TN, Truöl, P, Tsakov, I, Tseepeldorj, B, Tsipolitis, G, Tsurin, I, Turnau, J, Tzamariudaki, E, Urban, K, Usik, A, Utkin, D, Valkárová, A, Vallée, C, Van Mechelen, P, Vargas Trevino, A, Vazdik, Y, Vinokurova, S, Volchinski, V, Wacker, K, Weber, G, Weber, R, Wegener, D, Werner, C, Wessels, M, Wissing, C, Wolf, R, Wünsch, E, Xella, S, Yan, W, Yeganov, V, Žáček, J, Zálešák, J, Zhang, Z, Zhelezov, A, Zhokin, A, Zhu, YC, Zimmermann, J, Zimmermann, T, Zohrabyan, H & Zomer, F 2007, 'Search for lepton flavour violation in ep collisions at HERA', European Physical Journal C, vol. 52, no. 4, pp. 833-847. https://doi.org/10.1140/epjc/s10052-007-0440-2
Aktas A, Alexa C, Andreev V, Anthonis T, Antunovic B, Aplin S et al. Search for lepton flavour violation in ep collisions at HERA. European Physical Journal C. 2007 Dec 1;52(4):833-847. https://doi.org/10.1140/epjc/s10052-007-0440-2
Aktas, A. ; Alexa, C. ; Andreev, V. ; Anthonis, T. ; Antunovic, B. ; Aplin, S. ; Asmone, A. ; Astvatsatourov, A. ; Babaev, 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. ; De Boer, Y. ; Delcourt, B. ; Del Degan, M. ; 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. ; Falkewicz, 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. ; Garutti, 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. ; Gregori, M. ; 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. ; Hussain, S. ; 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. ; Knies, G. ; 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. ; Lindfeld, L. ; Lipka, K. ; Liptaj, A. ; List, B. ; List, J. ; Loktionova, N. ; Lopez-Fernandez, R. ; Lubimov, V. ; Lucaci-Timoce, A. I. ; Lueders, H. ; 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. ; Mladenov, D. ; 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. ; Povh, B. ; Preda, T. ; Prideaux, P. ; Rahmat, A. J. ; Raicevic, N. ; Ravdandorj, T. ; Reimer, P. ; Rimmer, A. ; Risler, C. ; Rizvi, E. ; Robmann, P. ; Roland, B. ; Roosen, R. ; Rostovtsev, A. ; Rurikova, Z. ; Rusakov, S. ; 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. ; Steder, M. ; Stella, B. ; Stiewe, J. ; Straumann, U. ; Sunar, D. ; Sykora, T. ; Tchoulakov, V. ; Thompson, G. ; Thompson, P. D. ; Toll, T. ; Tomasz, F. ; Traynor, D. ; Trinh, T. N. ; Truöl, P. ; Tsakov, I. ; Tseepeldorj, B. ; Tsipolitis, G. ; Tsurin, I. ; Turnau, J. ; Tzamariudaki, E. ; Urban, K. ; Usik, A. ; Utkin, D. ; Valkárová, A. ; Vallée, C. ; Van Mechelen, P. ; Vargas Trevino, A. ; Vazdik, Y. ; Vinokurova, S. ; Volchinski, V. ; Wacker, K. ; Weber, G. ; Weber, R. ; Wegener, D. ; Werner, C. ; Wessels, M. ; Wissing, C. ; Wolf, R. ; Wünsch, E. ; Xella, S. ; Yan, W. ; Yeganov, V. ; Žáček, J. ; Zálešák, J. ; Zhang, Z. ; Zhelezov, A. ; Zhokin, A. ; Zhu, Y. C. ; Zimmermann, J. ; Zimmermann, T. ; Zohrabyan, H. ; Zomer, F. / Search for lepton flavour violation in ep collisions at HERA. In: European Physical Journal C. 2007 ; Vol. 52, No. 4. pp. 833-847.
@article{4d1887dd58944cb0bac80df59341dbe3,
title = "Search for lepton flavour violation in ep collisions at HERA",
abstract = "A search for the lepton flavour violating processes ep → μX and ep → τX is performed with the H1 experiment at HERA. Final states with a muon or tau and a hadronic jet are searched for in a data sample corresponding to an integrated luminosity of 66.5 pb-1 for e+p collisions and 13.7 pb-1 for e-p collisions at a centre-of-mass energy of 319 GeV. No evidence for lepton flavour violation is found. Limits are derived on the mass and the couplings of leptoquarks inducing lepton flavour violation in an extension of the Buchm{\"u}ller-R{\"u}ckl-Wyler effective model. Leptoquarks produced in ep collisions with a coupling strength of λ=0.3 and decaying with the same coupling strength to a muon-quark pair or a tau-quark pair are excluded at 95{\%} confidence level up to masses of 459 GeV and 379 GeV, respectively.",
author = "A. Aktas and C. Alexa and V. Andreev and T. Anthonis and B. Antunovic and S. Aplin and A. Asmone and A. Astvatsatourov and A. Babaev 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 {De Boer}, Y. and B. Delcourt and {Del Degan}, M. 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. Falkewicz 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 E. Garutti 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 M. Gregori 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 S. Hussain 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 G. Knies 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 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 H. Lueders 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 D. Mladenov 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 B. Povh and T. Preda and P. Prideaux and Rahmat, {A. J.} and N. Raicevic and T. Ravdandorj and P. Reimer and A. Rimmer 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 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 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 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 A. Usik 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 K. Wacker 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 W. Yan 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 J. Zimmermann and T. Zimmermann and H. Zohrabyan and F. Zomer",
year = "2007",
month = "12",
day = "1",
doi = "10.1140/epjc/s10052-007-0440-2",
language = "English",
volume = "52",
pages = "833--847",
journal = "European Physical Journal C",
issn = "1434-6044",
publisher = "Springer New York",
number = "4",

}

TY - JOUR

T1 - Search for lepton flavour violation in ep collisions at HERA

AU - Aktas, A.

AU - Alexa, C.

AU - Andreev, V.

AU - Anthonis, T.

AU - Antunovic, B.

AU - Aplin, S.

AU - Asmone, A.

AU - Astvatsatourov, A.

AU - Babaev, 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 - De Boer, Y.

AU - Delcourt, B.

AU - Del Degan, M.

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 - Falkewicz, 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 - Garutti, 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 - Gregori, M.

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 - Hussain, S.

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 - Knies, G.

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 - 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 - Lueders, H.

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 - Mladenov, D.

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 - Povh, B.

AU - Preda, T.

AU - Prideaux, P.

AU - Rahmat, A. J.

AU - Raicevic, N.

AU - Ravdandorj, T.

AU - Reimer, P.

AU - Rimmer, A.

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 - 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 - 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 - 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 - Usik, A.

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 - Wacker, K.

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 - Yan, W.

AU - Yeganov, V.

AU - Žáček, J.

AU - Zálešák, J.

AU - Zhang, Z.

AU - Zhelezov, A.

AU - Zhokin, A.

AU - Zhu, Y. C.

AU - Zimmermann, J.

AU - Zimmermann, T.

AU - Zohrabyan, H.

AU - Zomer, F.

PY - 2007/12/1

Y1 - 2007/12/1

N2 - A search for the lepton flavour violating processes ep → μX and ep → τX is performed with the H1 experiment at HERA. Final states with a muon or tau and a hadronic jet are searched for in a data sample corresponding to an integrated luminosity of 66.5 pb-1 for e+p collisions and 13.7 pb-1 for e-p collisions at a centre-of-mass energy of 319 GeV. No evidence for lepton flavour violation is found. Limits are derived on the mass and the couplings of leptoquarks inducing lepton flavour violation in an extension of the Buchmüller-Rückl-Wyler effective model. Leptoquarks produced in ep collisions with a coupling strength of λ=0.3 and decaying with the same coupling strength to a muon-quark pair or a tau-quark pair are excluded at 95% confidence level up to masses of 459 GeV and 379 GeV, respectively.

AB - A search for the lepton flavour violating processes ep → μX and ep → τX is performed with the H1 experiment at HERA. Final states with a muon or tau and a hadronic jet are searched for in a data sample corresponding to an integrated luminosity of 66.5 pb-1 for e+p collisions and 13.7 pb-1 for e-p collisions at a centre-of-mass energy of 319 GeV. No evidence for lepton flavour violation is found. Limits are derived on the mass and the couplings of leptoquarks inducing lepton flavour violation in an extension of the Buchmüller-Rückl-Wyler effective model. Leptoquarks produced in ep collisions with a coupling strength of λ=0.3 and decaying with the same coupling strength to a muon-quark pair or a tau-quark pair are excluded at 95% confidence level up to masses of 459 GeV and 379 GeV, respectively.

UR - http://www.scopus.com/inward/record.url?scp=36148988766&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=36148988766&partnerID=8YFLogxK

U2 - 10.1140/epjc/s10052-007-0440-2

DO - 10.1140/epjc/s10052-007-0440-2

M3 - Article

VL - 52

SP - 833

EP - 847

JO - European Physical Journal C

JF - European Physical Journal C

SN - 1434-6044

IS - 4

ER -