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Search for single top quark production via contact interactions at LEP2
Abdallah J., Brunet M., Bloch D., Nikolenko M., Winter M. et al
European Physical Journal C 71 (2011) 1555 (13 p.) - http://hal.in2p3.fr/in2p3-00586332
Physics/High Energy Physics - Experiment
Search for single top quark production via contact interactions at LEP2
J. Abdallah1, M. Brunet2, D. Bloch3, M. Nikolenko3, M. Winter3, R. Barbier4, P. Jonsson4, S. Katsanevas4, G. Smadja4, P. Verdier4, N. Besançon5, M. Besson5, M. Boonekamp5, P. Jarry5, P. Lutz5, R. Nicolaidou5, A. Ouarou5, F. Pierre5, L. Turluer5, D. Vilanova5, Y. Arnoud6, C. Bérat6, F. Ledroit6, P. Antilogus1, J.-E. Augustin1, M. Baubillier1, E. Ben-Haim1, M. Berggren1, W. Da Silva1, F. Kapusta1, A. Savoy-Navarro1
1:  LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
http://www-lpnhep.in2p3.fr
CNRS : UMR7585 – IN2P3 – Université Pierre et Marie Curie (UPMC) - Paris VI – Université Paris VII - Paris Diderot
Barre 12-22, 1er étage 4 Place Jussieu 75252 Paris Cedex 05
France
2:  PCC - Physique Corpusculaire et Cosmologie - Collège de France
CNRS : UMR7553 – IN2P3 – Université Paris VII - Paris Diderot
11, place Marcelin Berthelot - 75231 Paris Cedex 05
France
3:  DRS-IPHC - Département Recherches Subatomiques
CNRS : UMR7178 – IN2P3 – Université de Strasbourg
23 rue du Loess - BP28 67037 Strasbourg cedex 2
France
4:  IPNL - Institut de Physique Nucléaire de Lyon
http://www.ipnl.in2p3.fr/
CNRS : UMR5822 – IN2P3 – Université Claude Bernard - Lyon I
France
5:  SPP - Service de Physique des Particules
http://www-dapnia.cea.fr/Spp/
CEA : DSM/IRFU
France
6:  LPSC - Laboratoire de Physique Subatomique et de Cosmologie
http://lpsc.in2p3.fr
CNRS : UMR5821 – IN2P3 – Université Joseph Fourier - Grenoble I – Institut Polytechnique de Grenoble - Grenoble Institute of Technology
53 avenue des Martyrs - 38026 Grenoble Cedex
France
Single top quark production via four-fermion contact interactions associated to flavour-changing neutral currents was searched for in data taken by the DELPHI detector at LEP2. The data were accumulated at centre-of-mass energies ranging from 189 to 209 GeV, with an integrated luminosity of 598.1 pb^-1. No evidence for a signal was found. Limits on the energy scale Lambda, were set for scalar-, vector- and tensor-like coupling scenarios.
DELPHI

Article in peer-reviewed journal
2011
European Physical Journal C
71
1555 (13 p.)

LPSC11083
22 pages, 8 figures, version as Accepted for publication by Eur. Phys. J. C, see paper for full list of authors
Fulltext link: 
http://fr.arXiv.org/abs/1102.4455