Search for Radions at LEP2

Abbiendi, G.; Geich-Gimbel, C.; Rozen, Y.; Boutemeur, M.; Burckhart, H.J.; Axen, D.; Mättig, P.; Vértesi, R.; Meyer, N.; Sachs, K.; Hoffman, K.; Giacomelli, G.; Mohr, W.; Meijers, F.; Boeriu, O.; Mori, T.; Mihara, S.; Shears, T.G.; Sarkisyan, E.K.G.; Cuffiani, M.; Duckeck, G.; Keeler, R.K.; Allison, J.; Tasevsky, M.; Torrence, E.; Tsur, E.; Wyatt, T.R.; Kluth, S.; Batley, R.J.; Tran, P.; Kupper, M.; Quadt, A.; Pater, J.R.; Braibant, S.; Barlow, R.J.; Yamashita, S.; Duerdoth, I.P.; Grunhaus, J.; Heuer, R.D.; Menges, W.; Alexander, G.; Seuster, R.; Wengler, T.; Shen, B.C.; Verzocchi, M.; Komamiya, S.; Saeki, T.; Herten, G.; Kawamoto, T.; Nanjo, H.; Brown, R.M.; Zivkovic, L.; Charlton, D.G.; Trigger, I.; Anderson, K.J.; Wilson, G.W.; Bethke, S.; Hanson, G.G.; Ueda, I.; De Roeck, A.; Campana, S.; Mashimo, T.; Roney, J.M.; Åkesson, P.F.; Dado, S.; Igo-Kemenes, P.; Hajdu, C.; Wilson, J.A.; Hamann, M.; Söldner-Rembold, S.; Carnegie, R.K.; Bock, P.; Nisius, R.; Dienes, B.; Lu, J.; Behnke, T.; Bella, G.; Scharff-Hansen, P.; Ferrari, P.; Mikenberg, G.; Neal, H.A.; Rabbertz, K.; Kobayashi, T.; Wermes, N.; Ludwig, J.; Levinson, L.; Letts, J.; Horváth, D.; Marcellini, S.; O'Neale, S.W.; Biebel, O.; von Krogh, J.; Martin, A.J.; Pooth, O.; Duchovni, E.; Bechtle, P.; Fabbri, F.; Schröder, M.; Krieger, P.; Kobel, M.; Hill, J.C.; Hauschild, M.; Pásztor, G.; Lillich, J.; Renkel, P.; Kanzaki, J.; Loebinger, F.K.; Gary, J.W.; Bell, P.J.; Lloyd, S.L.; Ströhmer, R.; Barberio, E.; Anagnostou, G.; Kennedy, B.W.; Vannerem, P.; Watkins, P.M.; Strom, D.; Ludwig, A.; Fiedler, F.; Bellerive, A.; Mader, W.; De Wolf, E.A.; Hawkes, C.M.; Harel, A.; Krämer, T.; Rossi, A.M.; Dubbert, J.; Capiluppi, P.; Ishii, K.; Przybycień, M.; Gruwé, M.; Rembser, C.; Lellouch, D.; Masetti, G.; Stahl, A.; Spano, F.; Carter, J.R.; Bell, K.W.; Ford, M.; Schumacher, M.; Schaile, A.D.; McPherson, R.A.; Gagnon, P.; Toya, D.; Ujvári, B.; Günther, P.O.; Donkers, M.; Oh, A.; Giacomelli, P.; Miller, D.J.; Gross, E.; Thomson, M.A.; Junk, T.R.; Sherwood, P.; Ward, C.P.; Ciocca, C.; Mutter, A.; Ward, D.R.; Kellogg, R.G.; Kuhl, T.; Carter, A.A.; Mes, H.; Teuscher, R.; Asai, S.; Nakamura, I.; Plane, D.E.; Chang, C.Y.; Tarem, S.; Jovanovic, P.; Etzion, E.; Pahl, C.; Hawkings, R.; Merritt, F.S.; Barillari, T.; Orito, S.; Ainsley, C.; Runge, K.; Smith, A.M.; Csilling, A.; Pinfold, J.; Turner-Watson, M.F.; Goldberg, J.; Vossebeld, J.; Schieck, J.; Desch, K.; Vollmer, C.F.; Giunta, M.; Gupta, A.; Nagai, K.; Benelli, G.; Bailey, I.; Lanske, D.; Trócsányi, Z.; Sobie, R.; Karlen, D.; Amaral, P.; McKenna, J.; Oreglia, M.J.; Hemingway, R.J.; Jeremie, H.; Schörner-Sadenius, T.; Zer-Zion, D.; Voss, H.; Kawagoe, K.; Michelini, A.; Watson, N.K.; Landsman, H.; Schaile, O.; Wells, P.S.; Wolf, G.; Skuja, A.; Watson, A.T.; Lafferty, G.D.; Frey, A.; Fleck, I.; Pilcher, J.E.

doi:10.1016/j.physletb.2006.04.045

Article
Report number	hep-ex/0410035 ; CERN-PH-EP-2004-041 ; CERN-PH-EP-2004-041
Title	Search for Radions at LEP2
Related title	LEP-2
Author(s)	Abbiendi, G. (INFN, Bologna ; U. Bologna, DIFA) ; Ainsley, C. (Cambridge U.) ; Åkesson, P.F. (Bonn U.) ; Alexander, G. (Tel Aviv U.) ; Allison, J. (Manchester U.) ; Amaral, P. (Chicago U. ; Chicago U., EFI) ; Anagnostou, G. (Birmingham U.) ; Anderson, K.J. (Chicago U. ; Chicago U., EFI) ; Asai, S. (Tokyo U., ICEPP ; Kobe U.) ; Axen, D. (British Columbia U.) ; Bailey, I. (Victoria U.) ; Barberio, E. (CERN) ; Barillari, T. (Munich, Max Planck Inst.) ; Barlow, R.J. (Manchester U.) ; Batley, R.J. (Cambridge U.) ; Bechtle, P. (DESY ; Hamburg U.) ; Behnke, T. (DESY ; Hamburg U.) ; Bell, K.W. (Rutherford) ; Bell, P.J. (Birmingham U.) ; Bella, G. (Tel Aviv U.) ; Bellerive, A. (Ottawa Carleton Inst. Phys.) ; Benelli, G. (UC, Riverside) ; Bethke, S. (Munich, Max Planck Inst.) ; Biebel, O. (Munich U.) ; Boeriu, O. (Freiburg U.) ; Bock, P. (Heidelberg U.) ; Boutemeur, M. (Munich U.) ; Braibant, S. (INFN, Bologna ; U. Bologna, DIFA) ; Brown, R.M. (Rutherford) ; Burckhart, H.J. (CERN) ; Campana, S. (UC, Riverside) ; Capiluppi, P. (INFN, Bologna ; U. Bologna, DIFA) ; Carnegie, R.K. (Ottawa Carleton Inst. Phys.) ; Carter, A.A. (Queen Mary, U. of London (main)) ; Carter, J.R. (Cambridge U.) ; Chang, C.Y. (Maryland U.) ; Charlton, D.G. (Birmingham U.) ; Ciocca, C. (INFN, Bologna ; U. Bologna, DIFA) ; Csilling, A. (Wigner RCP, Budapest) ; Cuffiani, M. (INFN, Bologna ; U. Bologna, DIFA) ; Dado, S. (Technion) ; De Roeck, A. (CERN) ; De Wolf, E.A. (CERN) ; Desch, K. (DESY ; Hamburg U.) ; Dienes, B. (Debrecen, Inst. Nucl. Res.) ; Donkers, M. (Ottawa Carleton Inst. Phys.) ; Dubbert, J. (Munich U.) ; Duchovni, E. (Weizmann Inst.) ; Duckeck, G. (Munich U.) ; Duerdoth, I.P. (Manchester U.) ; Etzion, E. (Tel Aviv U.) ; Fabbri, F. (INFN, Bologna ; U. Bologna, DIFA) ; Ferrari, P. (CERN) ; Fiedler, F. (Munich U.) ; Fleck, I. (Freiburg U.) ; Ford, M. (Manchester U.) ; Frey, A. (CERN) ; Gagnon, P. (Indiana U.) ; Gary, J.W. (UC, Riverside) ; Geich-Gimbel, C. (Bonn U.) ; Giacomelli, G. (INFN, Bologna ; U. Bologna, DIFA) ; Giacomelli, P. (INFN, Bologna ; U. Bologna, DIFA) ; Giunta, M. (UC, Riverside) ; Goldberg, J. (Technion) ; Gross, E. (Weizmann Inst.) ; Grunhaus, J. (Tel Aviv U.) ; Gruwé, M. (CERN) ; Günther, P.O. (Bonn U.) ; Gupta, A. (Chicago U. ; Chicago U., EFI) ; Hajdu, C. (Wigner RCP, Budapest) ; Hamann, M. (DESY ; Hamburg U.) ; Hanson, G.G. (UC, Riverside) ; Harel, A. (Technion) ; Hauschild, M. (CERN) ; Hawkes, C.M. (Birmingham U.) ; Hawkings, R. (CERN) ; Hemingway, R.J. (Ottawa Carleton Inst. Phys.) ; Herten, G. (Freiburg U.) ; Heuer, R.D. (DESY ; Hamburg U.) ; Hill, J.C. (Cambridge U.) ; Hoffman, K. (Chicago U. ; Chicago U., EFI) ; Horváth, D. (Wigner RCP, Budapest) ; Igo-Kemenes, P. (Heidelberg U.) ; Ishii, K. (Tokyo U., ICEPP ; Kobe U.) ; Jeremie, H. (Montreal U.) ; Jovanovic, P. (Birmingham U.) ; Junk, T.R. (Ottawa Carleton Inst. Phys.) ; Kanzaki, J. (Tokyo U., ICEPP ; Kobe U.) ; Karlen, D. (Victoria U.) ; Kawagoe, K. (Tokyo U., ICEPP ; Kobe U.) ; Kawamoto, T. (Tokyo U., ICEPP ; Kobe U.) ; Keeler, R.K. (Victoria U.) ; Kellogg, R.G. (Maryland U.) ; Kennedy, B.W. (Rutherford) ; Kluth, S. (Munich, Max Planck Inst.) ; Kobayashi, T. (Tokyo U., ICEPP ; Kobe U.) ; Kobel, M. (Bonn U.) ; Komamiya, S. (Tokyo U., ICEPP ; Kobe U.) ; Krämer, T. (DESY ; Hamburg U.) ; Krieger, P. (Ottawa Carleton Inst. Phys.) ; von Krogh, J. (Heidelberg U.) ; Kuhl, T. (DESY ; Hamburg U.) ; Kupper, M. (Weizmann Inst.) ; Lafferty, G.D. (Manchester U.) ; Landsman, H. (Technion) ; Lanske, D. (Aachen, Tech. Hochsch.) ; Lellouch, D. (Weizmann Inst.) ; Letts, J. (UC, San Diego) ; Levinson, L. (Weizmann Inst.) ; Lillich, J. (Freiburg U.) ; Lloyd, S.L. (Queen Mary, U. of London (main)) ; Loebinger, F.K. (Manchester U.) ; Lu, J. (British Columbia U.) ; Ludwig, A. (Bonn U.) ; Ludwig, J. (Freiburg U.) ; Mader, W. (Bonn U.) ; Marcellini, S. (INFN, Bologna ; U. Bologna, DIFA) ; Martin, A.J. (Queen Mary, U. of London (main)) ; Masetti, G. (INFN, Bologna ; U. Bologna, DIFA) ; Mashimo, T. (Tokyo U., ICEPP ; Kobe U.) ; Mättig, P. (Bergische U., Wuppertal (main)) ; McKenna, J. (British Columbia U.) ; McPherson, R.A. (Victoria U.) ; Meijers, F. (CERN) ; Menges, W. (DESY ; Hamburg U.) ; Merritt, F.S. (Chicago U. ; Chicago U., EFI) ; Mes, H. (Ottawa Carleton Inst. Phys.) ; Meyer, N. (DESY ; Hamburg U.) ; Michelini, A. (INFN, Bologna ; U. Bologna, DIFA) ; Mihara, S. (Tokyo U., ICEPP ; Kobe U.) ; Mikenberg, G. (Weizmann Inst.) ; Miller, D.J. (University Coll. London) ; Mohr, W. (Freiburg U.) ; Mori, T. (Tokyo U., ICEPP ; Kobe U.) ; Mutter, A. (Freiburg U.) ; Nagai, K. (Queen Mary, U. of London (main)) ; Nakamura, I. (Tokyo U., ICEPP ; Kobe U.) ; Nanjo, H. (Tokyo U., ICEPP ; Kobe U.) ; Neal, H.A. (Yale U.) ; Nisius, R. (Munich, Max Planck Inst.) ; O'Neale, S.W. (Birmingham U.) ; Oh, A. (CERN) ; Oreglia, M.J. (Chicago U. ; Chicago U., EFI) ; Orito, S. (Tokyo U., ICEPP ; Kobe U.) ; Pahl, C. (Munich, Max Planck Inst.) ; Pásztor, G. (UC, Riverside) ; Pater, J.R. (Manchester U.) ; Pilcher, J.E. (Chicago U. ; Chicago U., EFI) ; Pinfold, J. (Alberta U.) ; Plane, D.E. (CERN) ; Pooth, O. (Aachen, Tech. Hochsch.) ; Przybycień, M. (CERN) ; Quadt, A. (Bonn U.) ; Rabbertz, K. (CERN) ; Rembser, C. (CERN) ; Renkel, P. (Weizmann Inst.) ; Roney, J.M. (Victoria U.) ; Rossi, A.M. (INFN, Bologna ; U. Bologna, DIFA) ; Rozen, Y. (Technion) ; Runge, K. (Freiburg U.) ; Sachs, K. (Ottawa Carleton Inst. Phys.) ; Saeki, T. (Tokyo U., ICEPP ; Kobe U.) ; Sarkisyan, E.K.G. (CERN) ; Schaile, A.D. (Munich U.) ; Schaile, O. (Munich U.) ; Scharff-Hansen, P. (CERN) ; Schieck, J. (Munich, Max Planck Inst.) ; Schörner-Sadenius, T. (CERN) ; Schröder, M. (CERN) ; Schumacher, M. (Bonn U.) ; Seuster, R. (Aachen, Tech. Hochsch.) ; Shears, T.G. (CERN) ; Shen, B.C. (UC, Riverside) ; Sherwood, P. (University Coll. London) ; Skuja, A. (Maryland U.) ; Smith, A.M. (CERN) ; Sobie, R. (Victoria U.) ; Söldner-Rembold, S. (Manchester U.) ; Spano, F. (Chicago U. ; Chicago U., EFI) ; Stahl, A. (Bonn U.) ; Strom, D. (Oregon U.) ; Ströhmer, R. (Munich U.) ; Tarem, S. (Technion) ; Tasevsky, M. (CERN) ; Teuscher, R. (Chicago U. ; Chicago U., EFI) ; Thomson, M.A. (Cambridge U.) ; Torrence, E. (Oregon U.) ; Toya, D. (Tokyo U., ICEPP ; Kobe U.) ; Tran, P. (UC, Riverside) ; Trigger, I. (CERN) ; Trócsányi, Z. (Debrecen, Inst. Nucl. Res.) ; Tsur, E. (Tel Aviv U.) ; Turner-Watson, M.F. (Birmingham U.) ; Ueda, I. (Tokyo U., ICEPP ; Kobe U.) ; Ujvári, B. (Debrecen, Inst. Nucl. Res.) ; Vollmer, C.F. (Munich U.) ; Vannerem, P. (Freiburg U.) ; Vértesi, R. (Debrecen, Inst. Nucl. Res.) ; Verzocchi, M. (Maryland U.) ; Voss, H. (CERN) ; Vossebeld, J. (CERN) ; Ward, C.P. (Cambridge U.) ; Ward, D.R. (Cambridge U.) ; Watkins, P.M. (Birmingham U.) ; Watson, A.T. (Birmingham U.) ; Watson, N.K. (Birmingham U.) ; Wells, P.S. (CERN) ; Wengler, T. (CERN) ; Wermes, N. (Bonn U.) ; Wilson, G.W. (Manchester U.) ; Wilson, J.A. (Birmingham U.) ; Wolf, G. (Weizmann Inst.) ; Wyatt, T.R. (Manchester U.) ; Yamashita, S. (Tokyo U., ICEPP ; Kobe U.) ; Zer-Zion, D. (UC, Riverside) ; Zivkovic, L. (Weizmann Inst.)
Affiliation	(School of Physics and Astronomy, University of Birmingham) ; (Dipartimento di Fisica dell Universita di Bologna and INFN) ; (Physikalisches Institut, Universitat Bonn) ; (Department of Physics, University of California) ; (Cavendish Laboratory, Cambridge) ; (Ottawa-Carleton Institute for Physics, Department of Physics, Carleton University) ; (CERN) ; (Enrico Fermi Institute and Department of Physics, University of Chicago) ; (Fakultat fur Physik, Albert Ludwigs Universitat, Freiburg) ; (Physikalisches Institut, Universitat Heidelberg) ; (Indiana University, Department of Physics) ; (Queen Mary and Westfield College, University of London,) ; (Technische Hochschule Aachen, III Physikalisches Institut, Aachen) ; (University College London) ; (Department of Physics, Schuster Laboratory, Manchester) ; (Department of Physics, University of Maryland) ; (Laboratoire de Physique Nucleaire, Universite de Montreal) ; (University of Oregon, Department of Physics) ; (CLRC Rutherford Appleton Laboratory) ; (Department of Physics, Technion-Israel Institute of Technology) ; (Department of Physics and Astronomy, Tel Aviv University) ; (International Centre for Elementary Particle Physics and Department of Physics, University of Tokyo) ; (Kobe University) ; (Particle Physics Department, Weizmann Institute of Science) ; (Universitat Hamburg/DESY) ; (University of Victoria, Department of Physics) ; (University of British Columbia, Department of Physics) ; (University of Alberta, Department of Physics) ; (Research Institute for Particle and Nuclear Physics, Budapest) ; (Institute of Nuclear Research, Hungary) ; (Ludwigs-Maximilians-Universitat Munchen) ; (Max-Planck-Institut fur Physik, Munich) ; (Yale University,Department of Physics) ; (TRIUMF)
Publication	2005
Imprint	12 Aug 2004
Number of pages	19
In:	Phys. Lett. B 609 (2005) pp.20-34
DOI	10.1016/j.physletb.2006.04.045 10.1016/j.physletb.2005.01.021
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LEP ; OPAL
Abstract	A new scalar resonance, called the radion, with couplings to fermions and bosons similar to those of the Higgs boson, is predicted in the framework of Randall-Sundrum models, proposed solutions to the hierarchy problem with one extra dimension. An important distinction between the radion and the Higgs boson is that the radion would couple directly to gluon pairs, and in particular its decay products would include a significant fraction of gluon jets. The radion had the same quantum numbers as the Standard Model (SM) Higgs boson, and therefore they can mix, with the resulting mass eigenstates having properties different from those of the SM Higgs boson. Existing searches for the Higgs boson are sensitive to the possible production and decay of radions and Higgs bosons in these models. For the first time, searches for the SM Higgs boson and flavour-independent and decay-mode independent searches for a neutral Higgs boson are used in combination to explore the parameter space of the Randall-Sundrum model. In the dataset recorded by the OPAL experiment at LEP, no evidence for radion or Higgs particle production was observed in any of those searches. The results are used to set limits on the radion and Higgs boson masses.
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