Search for Supersymmetric Particles with R-Parity Violating Decays in e+e- Collisions at s up to 209GeV

Searches for the pair production of supersymmetric particles under the assumption that R-parity is violated via a single dominant LLĒ, LQD̄ or ŪD̄D̄ coupling are performed using the data collected by the ALEPH detector at LEP at centre-of-mass energies from 189 to 209 GeV. The numbers of observed candidate events in the data are in agreement with the Standard Model expectation, and limits on the production cross sections and on the masses of charginos, sleptons, squarks and sneutrinos are derived. (Submitted to the European Physical Journal C) ∗) See next pages for the list of authors The ALEPH Collaboration A. Heister, S. Schael Physikalisches Institut das RWTH-Aachen, D-52056 Aachen, Germany R. Barate, R. Brunelière, I. De Bonis, D. Decamp, C. Goy, S. Jezequel, J.-P. Lees, F. Martin, E. Merle, M.-N. Minard, B. Pietrzyk, B. Trocmé Laboratoire de Physique des Particules (LAPP), INP-CNRS, F-74019 Annecy-le-Vieux Cedex, France S. Bravo, M.P. Casado, M. Chmeissani, J.M. Crespo, E. Fernandez, M. Fernandez-Bosman, Ll. Garrido, M. Martinez, A. Pacheco, H. Ruiz Institut de Física d’Altes Energies, Universitat Autònoma de Barcelona, E-08193 Bellaterra (Barcelona), Spain A. Colaleo, D. Creanza, N. De Filippis, M. de Palma, G. Iaselli, G. Maggi, M. Maggi, S. Nuzzo, A. Ranieri, G. Raso, F. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, A. Tricomi, G. Zito Dipartimento di Fisica, INFN Sezione di Bari, I-70126 Bari, Italy X. Huang, J. Lin, Q. Ouyang, T. Wang, Y. Xie, R. Xu, S. Xue, J. Zhang, L. Zhang, W. Zhao Institute of High Energy Physics, Academia Sinica, Beijing, The People’s Republic of China D. Abbaneo, P. Azzurri, T. Barklow, O. Buchmüller, M. Cattaneo, F. Cerutti, B. Clerbaux, H. Drevermann, R.W. Forty, M. Frank, F. Gianotti, J.B. Hansen, J. Harvey, D.E. Hutchcroft, P. Janot, B. Jost, M. Kado, P. Mato, A. Moutoussi, F. Ranjard, L. Rolandi, D. Schlatter, G. Sguazzoni, W. Tejessy, F. Teubert, A. Valassi, I. Videau, J.J. Ward European Laboratory for Particle Physics (CERN), CH-1211 Geneva 23, Switzerland F. Badaud, S. Dessagne, A. Falvard, D. Fayolle, P. Gay, J. Jousset, B. Michel, S. Monteil, D. Pallin, J.M. Pascolo, P. Perret Laboratoire de Physique Corpusculaire, Université Blaise Pascal, INP-CNRS, Clermont-Ferrand, F-63177 Aubière, France J.D. Hansen, J.R. Hansen, P.H. Hansen, B.S. Nilsson Niels Bohr Institute, 2100 Copenhagen, DK-Denmark A. Kyriakis, C. Markou, E. Simopoulou, A. Vayaki, K. Zachariadou Nuclear Research Center Demokritos (NRCD), GR-15310 Attiki, Greece A. Blondel, J.-C. Brient, F. Machefert, A. Rougé, M. Swynghedauw, R. Tanaka H. Videau Laoratoire Leprince-Ringuet, Ecole Polytechnique, INP-CNRS, F-91128 Palaiseau Cedex, France V. Ciulli, E. Focardi, G. Parrini Dipartimento di Fisica, Università di Firenze, INFN Sezione di Firenze, I-50125 Firenze, Italy A. Antonelli, M. Antonelli, G. Bencivenni, F. Bossi, G. Capon, V. Chiarella, P. Laurelli, G. Mannocchi, G.P. Murtas, L. Passalacqua Laboratori Nazionali dell’INFN (LNF-INFN), I-00044 Frascati, Italy J. Kennedy, J.G. Lynch, P. Negus, V. O’Shea, A.S. Thompson Department of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ,United Kingdom S. Wasserbaech Department of Physics, Haverford College, Haverford, PA 19041-1392, U.S.A. R. Cavanaugh, S. Dhamotharan, C. Geweniger, P. Hanke, V. Hepp, E.E. Kluge, G. Leibenguth, A. Putzer, H. Stenzel, K. Tittel, M. Wunsch Kirchhoff-Institut für Physik, Universität Heidelberg, D-69120 Heidelberg, Germany R. Beuselinck, W. Cameron, G. Davies, P.J. Dornan, M. Girone, R.D. Hill, N. Marinelli, J. Nowell, S.A. Rutherford, J.K. Sedgbeer, J.C. Thompson, R. White Department of Physics, Imperial College, London SW7 2BZ, United Kingdom V.M. Ghete, P. Girtler, E. Kneringer, D. Kuhn, G. Rudolph Institut für Experimentalphysik, Universität Innsbruck, A-6020 Innsbruck, Austria E. Bouhova-Thacker, C.K. Bowdery, D.P. Clarke, G. Ellis, A.J. Finch, F. Foster, G. Hughes, R.W.L. Jones, M.R. Pearson, N.A. Robertson, M. Smizanska Department of Physics, University of Lancaster, Lancaster LA1 4YB, United Kingdom O. van der Aa, C. Delaere, V. Lemaitre Institut de Physique Nucléaire, Département de Physique, Université Catholique de Louvain, 1348 Louvain-la-Neuve, Belgium U. Blumenschein, F. Hölldorfer, K. Jakobs, F. Kayser, K. Kleinknecht, A.-S. Müller, B. Renk, H.-G. Sander, S. Schmeling, H. Wachsmuth, C. Zeitnitz, T. Ziegler Institut für Physik, Universität Mainz, D-55099 Mainz, Germany A. Bonissent, P. Coyle, C. Curtil, A. Ealet, D. Fouchez, P. Payre, A. Tilquin Centre de Physique des Particules de Marseille, Univ Méditerranée, INP-CNRS, F-13288 Marseille, France F. Ragusa Dipartimento di Fisica, Università di Milano e INFN Sezione di Milano, I-20133 Milano, Italy. A. David, H. Dietl, G. Ganis, K. Hüttmann, G. Lütjens, W. Männer, H.-G. Moser, R. Settles, G. Wolf Max-Planck-Institut für Physik, Werner-Heisenberg-Institut, D-80805 München, Germany J. Boucrot, O. Callot, M. Davier, L. Duflot, J.-F. Grivaz, Ph. Heusse, A. Jacholkowska, L. Serin, J.-J. Veillet, C. Yuan Laboratoire de l’Accélérateur Linéaire, Université de Paris-Sud, INP-CNRS, F-91898 Orsay Cedex, France G. Bagliesi, T. Boccali, L. Foà, A. Giammanco, A. Giassi, F. Ligabue, A. Messineo, F. Palla, G. Sanguinetti, A. Sciabà, R. Tenchini, A. Venturi, P.G. Verdini Dipartimento di Fisica dell’Università, INFN Sezione di Pisa, e Scuola Normale Superiore, I-56010 Pisa, Italy O. Awunor, G.A. Blair, G. Cowan, A. Garcia-Bellido, M.G. Green, L.T. Jones, T. Medcalf, A. Misiejuk, J.A. Strong, P. Teixeira-Dias Department of Physics, Royal Holloway & Bedford New College, University of London, Egham, Surrey TW20 OEX, United Kingdom R.W. Clifft, T.R. Edgecock, P.R. Norton, I.R. Tomalin Particle Physics Dept., Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 OQX, United Kingdom B. Bloch-Devaux, D. Boumediene, P. Colas, B. Fabbro, E. Lançon, M.-C. Lemaire, E. Locci, P. Perez, J. Rander, B. Tuchming, B. Vallage CEA, DAPNIA/Service de Physique des Particules, CE-Saclay, F-91191 Gif-sur-Yvette Cedex, France N. Konstantinidis, A.M. Litke, G. Taylor Institute for Particle Physics, University of California at Santa Cruz, Santa Cruz, CA 95064, USA C.N. Booth, S. Cartwright, F. Combley, P.N. Hodgson, M. Lehto, L.F. Thompson Department of Physics, University of Sheffield, Sheffield S3 7RH, United Kingdom A. Böhrer, S. Brandt, C. Grupen, J. Hess, A. Ngac, G. Prange Fachbereich Physik, Universität Siegen, D-57068 Siegen, Germany C. Borean, G. Giannini Dipartimento di Fisica, Università di Trieste e INFN Sezione di Trieste, I-34127 Trieste, Italy H. He, J. Putz, J. Rothberg Experimental Elementary Particle Physics, University of Washington, Seattle, WA 98195 U.S.A. S.R. Armstrong, K. Berkelman, K. Cranmer, D.P.S. Ferguson, Y. Gao, S. González, O.J. Hayes, H. Hu, S. Jin, J. Kile, P.A. McNamara III, J. Nielsen, Y.B. Pan, J.H. von Wimmersperg-Toeller, W. Wiedenmann, J. Wu, Sau Lan Wu, X. Wu, G. Zobernig Department of Physics, University of Wisconsin, Madison, WI 53706, USA G. Dissertori Institute for Particle Physics, ETH Hönggerberg, 8093 Zürich, Switzerland. Also at CERN, 1211 Geneva 23, Switzerland. Now at Fermilab, PO Box 500, MS 352, Batavia, IL 60510, USA Also at Dipartimento di Fisica di Catania and INFN Sezione di Catania, 95129 Catania, Italy. Now at University of Florida, Department of Physics, Gainesville, Florida 32611-8440, USA Also Istituto di Cosmo-Geofisica del C.N.R., Torino, Italy. Also at Groupe d’Astroparticules de Montpellier, Université de Montpellier II, 34095, Montpellier, France. Supported by CICYT, Spain. Supported by the National Science Foundation of China. Supported by the Danish Natural Science Research Council. Supported by the UK Particle Physics and Astronomy Research Council. Supported by the US Department of Energy, grant DE-FG0295-ER40896. Now at Departement de Physique Corpusculaire, Université de Genève, 1211 Genève 4, Switzerland. Also at Department of Physics, Tsinghua University, Beijing, The People’s Republic of China. Supported by the Leverhulme Trust. Permanent address: Universitat de Barcelona, 08208 Barcelona, Spain. Supported by Bundesministerium für Bildung und Forschung, Germany. Supported by the Direction des Sciences de la Matière, C.E.A. Supported by the Austrian Ministry for Science and Transport. Now at SAP AG, 69185 Walldorf, Germany Now at Groupe d’ Astroparticules de Montpellier, Université de Montpellier II, 34095 Montpellier, France. Now at BNP Paribas, 60325 Frankfurt am Mainz, Germany Supported by the US Department of Energy, grant DE-FG03-92ER40689. Now at Institut Inter-universitaire des hautes Energies (IIHE), CP 230, Université Libre de Bruxelles, 1050 Bruxelles, Belgique Also at Dipartimento di Fisica e Tecnologie Relative, Università di Palermo, Palermo, Italy. Deceased. Now at SLAC, Stanford, CA 94309, U.S.A Now at INFN Sezione di Roma II, Dipartimento di Fisica, Università di Roma Tor Vergata, 00133 Roma, Italy.