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Search for excited quarks in ep collisions at HERA

Aaron, F. D.; Alexa, C.; Alimujiang, K.; Andreev, V.; Antunovic, B.; Asmone, A.; Backovic, S.; Baghdasaryan, A.; Barrelet, E. and Bartel, W., et al. (2009) In Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics 678(4). p.335-343
Abstract
A search for excited quarks is performed using the full e(+/-)p data sample collected by the HI experiment at HERA, corresponding to a total integrated luminosity of 475 pb(-1). The electroweak decays of excited quarks q* -> q gamma. q* -> qZ and q* - qW with Subsequent hadronic or leptonic decays of the W and Z bosons are considered. No evidence for first generation excited quark production is found. Mass dependent exclusion limits on q* production cross sections and on the ratio f/Lambda of the coupling to the compositeness scale are derived Within gauge mediated models. These limits extend the excluded region compared to previous excited quark searches. (C) 2009 Elsevier B.V. All rights reserved.
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Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
volume
678
issue
4
pages
335 - 343
publisher
Elsevier
external identifiers
  • wos:000268533800002
  • scopus:67650227784
ISSN
0370-2693
DOI
10.1016/j.physletb.2009.06.044
language
English
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yes
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55c9d2bf-c221-4209-b77d-4f814571c733 (old id 1459500)
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2009-08-25 16:17:45
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2017-01-01 05:30:09
@article{55c9d2bf-c221-4209-b77d-4f814571c733,
  abstract     = {A search for excited quarks is performed using the full e(+/-)p data sample collected by the HI experiment at HERA, corresponding to a total integrated luminosity of 475 pb(-1). The electroweak decays of excited quarks q* -> q gamma. q* -> qZ and q* - qW with Subsequent hadronic or leptonic decays of the W and Z bosons are considered. No evidence for first generation excited quark production is found. Mass dependent exclusion limits on q* production cross sections and on the ratio f/Lambda of the coupling to the compositeness scale are derived Within gauge mediated models. These limits extend the excluded region compared to previous excited quark searches. (C) 2009 Elsevier B.V. All rights reserved.},
  author       = {Aaron, F. D. and Alexa, C. and Alimujiang, K. and Andreev, V. and Antunovic, B. and Asmone, A. and Backovic, S. and Baghdasaryan, A. and Barrelet, E. and Bartel, W. and Begzsuren, K. and Belousov, A. and Bizot, J. C. and Boudry, V. and Bozovic-Jelisavcic, I. and Bracinik, J. and Brandt, G. and Brinkmann, M. and Brisson, V. and Bruncko, D. and Bunyatyan, A. and Buschhorn, G. and Bystritskaya, L. and Campbell, A. J. and Avila, K. B. Cantun and Cassol-Brunner, F. and Cerny, K. and Cerny, V. and Chekelian, V. and Cholewa, A. and Contreras, J. G. and Coughlan, J. A. and Cozzika, G. and Cvach, J. and Dainton, J. B. and Daum, K. and Deak, M. and de Boer, Y. and Delcourt, B. and Del Degan, M. and Delvax, J. and De Roeck, A. and De Wolf, E. A. and Diaconu, C. and Dodonov, V. and Dossanov, A. and Dubak, A. and Eckerlin, G. and Efremenko, V. and Egli, S. and Eliseev, A. and Elsen, E. and Falkiewicz, A. and Faulkner, P. J. W. and Favart, L. and Fedotov, A. and Felst, R. and Feltesse, J. and Ferencei, J. and Fischer, D. -J. and Fleischer, M. and Fomenko, A. and Gabathuler, E. and Gayler, J. and Ghazaryan, S. and Glazov, A. and Glushkov, I. and Goerlich, L. and Gogitidze, N. and Gouzevitch, M. and Grab, C. and Greenshaw, T. and Grell, B. R. and Grindhammer, G. and Habib, S. and Haidt, D. and Helebrant, C. and Henderson, R. C. W. and Hennekemper, E. and Henschel, H. and Herbst, M. and Herrera, G. and Hildebrandt, M. and Hiller, K. H. and Hoffmann, D. and Horisberger, R. and Hreus, T. and Jacquet, M. and Janssen, M. E. and Janssen, X. and Jemanov, V. and Jönsson, Leif and Jung, A. W. and Jung, H. and Kapichine, M. and Katzy, J. and Kenyon, I. R. and Kiesling, C. and Klein, M. and Kleinwort, C. and Kluge, T. and Knutsson, A. and Kogler, R. and Korbel, V. and Kostka, P. and Kraemer, M. and Krastev, K. and Kretzschmar, J. and Kropivnitskaya, A. and Krueger, K. and Kutak, K. and Landon, M. P. J. and Lange, W. and Lastovicka-Medin, G. and Laycock, P. and Lebedev, A. and Leibenguth, G. and Lendermann, V. and Levonian, S. and Li, G. and Lipka, K. and Liptaj, A. and List, B. and List, J. and Loktionova, N. and Lopez-Fernandez, R. and Lubimov, V. and Lytkin, L. and Makankine, A. and Malinovski, E. and Marage, P. and Marti, Ll. and Martyn, H. -U. and Maxfield, S. J. and Mehta, A. and Meyer, A. B. and Meyer, H. and Meyer, H. and Meyer, J. and Michels, V. and Mikocki, S. and Milcewicz-Mika, I. and Moreau, F. and Morozov, A. and Morris, J. V. and Mozer, M. U. and Mudrinic, M. and Mueller, K. and Murin, P. and Naroska, B. and Naumann, Th. and Newman, P. R. and Niebuhr, C. and Nikiforov, A. and Nowak, G. and Nowak, K. and Nozicka, M. and Olivier, B. and Olsson, J. E. and Osman, Sakar and Ozerov, D. and Palichik, V. and Panagoulias, I. and Pandurovic, M. and Papadopoulou, Th. and Pascaud, C. and Patel, G. D. and Pejchal, O. and Perez, E. and Petrukhin, A. and Picuric, I. and Piec, S. and Pitzl, D. and Placakyte, R. and Pokorny, B. and Polifka, R. and Povh, B. and Preda, T. and Radescu, V. and Rahmat, A. J. and Raicevic, N. and Raspiareza, A. and Ravdandorj, T. and Reimer, P. and Rizvi, E. and Robmann, P. and Roland, B. and Roosen, R. and Rostovtsev, A. and Rotaru, M. and Tabasco, J. E. Ruiz and Rurikova, Z. and Rusakov, S. and Salek, D. and Sankey, D. P. C. and Sauter, M. and Sauvan, E. and Schmitt, S. and Schmitz, C. and Schoeffel, L. and Schoening, A. and Schultz-Coulon, H. -C. and Sefkow, F. and Shaw-West, R. N. and Sheviakov, I. and Shtarkov, L. N. and Shushkevich, S. and Sloan, T. and Smiljanic, I. and Soloviev, Y. and Sopicki, P. and South, D. and Spaskov, V. and Specka, A. and Staykova, Z. and Steder, M. and Stella, B. and Stoicea, G. and Straumann, U. and Sunar, D. and Sykora, T. and Tchoulakov, V. and Thompson, G. and Thompson, P. D. and Toll, T. and Tomasz, F. and Tran, T. H. and Traynor, D. and Trinh, T. N. and Truoel, P. and Tsakov, I. and Tseepeldorj, B. and Turnau, J. and Urban, K. and Valkarova, A. and Vallee, C. and Van Mechelen, P. and Trevino, A. Vargas and Vazdik, Y. and Vinokurova, S. and Volchinski, V. and von den Driesch, M. and Wegener, D. and Wissing, Ch. and Wuensch, E. and Zacek, J. and Zalesak, J. and Zhang, Z. and Zhokin, A. and Zimmermann, T. and Zohrabyan, H. and Zomer, F. and Zus, R.},
  issn         = {0370-2693},
  language     = {eng},
  number       = {4},
  pages        = {335--343},
  publisher    = {Elsevier},
  series       = {Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics},
  title        = {Search for excited quarks in ep collisions at HERA},
  url          = {http://dx.doi.org/10.1016/j.physletb.2009.06.044},
  volume       = {678},
  year         = {2009},
}