Cross sections, angular distributions and forward-backward asymmetries are presented, of two-fermion events produced in e+e- collisions at centre-of-mass energies from 189 to 209 GeV at LEP, measured with the ALEPH detector. Results for e+e-, mu+mu-, tau+tau-, qq, bb and cc production are in agreement with the Standard Model predictions. Constraints are set on scenarios of new physics such as four-fermion contact interactions, leptoquarks, Z' bosons, TeV-scale quantum gravity and R-parity violating squarks and sneutrinos.
Fermion pair production in e+ e- collisions at 189-209-GeV and constraints on physics beyond the standard model / S. Schael, R. Barate, R. Bruneliere, I. De Bonis, D. Decamp, C. Goy, S. Jezequel, J.P. Lees, F. Martin, E. Merle, M.N. Minard, B. Pietrzyk, B. Trocme, S. Bravo, M.P. Casado, M. Chmeissani, J.M. Crespo, E. Fernandez, M. Fernandez-Bosman, L. Garrido, M. Martinez, A. Pacheco, H. Ruiz, 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, X. Huang, J. Lin, Q. Ouyang, T. Wang, Y. Xie, R. Xu, S. Xue, J. Zhang, L. Zhang, W. Zhao, D. Abbaneo, T. Barklow, O. Buchmuller, M. Cattaneo, 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, Gigi Rolandi, D. Schlatter, G. Sguazzoni, F. Teubert, A. Valassi, I. Videau, F. Badaud, S. Dessagne, A. Falvard, D. Fayolle, P. Gay, J. Jousset, B. Michel, S. Monteil, D. Pallin, J.M. Pascolo, P. Perret, J.D. Hansen, J.R. Hansen, P.H. Hansen, A.C. Kraan, B. S. Nilsson, A. Kyriakis, C. Markou, E. Simopoulou, A. Vayaki, K. Zachariadou, A. Blondel, J.C. Brient, F. Machefert, A. Rouge, H. Videau, V. Ciulli, E. Focardi, G. Parrini, A. Antonelli, M. Antonelli, G. Bencivenni, F. Bossi, G. Capon, F. Cerutti, V. Chiarella, P. Laurelli, G. Mannocchi, G.P. Murtas, L. Passalacqua, J. Kennedy, J.G. Lynch, P. Negus, V. O'Shea, A.S. Thompson, S. Wasserbaech, R. Cavanaugh, S. Dhamotharan, C. Geweniger, P. Hanke, V. Hepp, E.E. Kluge, A. Putzer, H. Stenzel, K. Tittel, M. Wunsch, R. Beuselinck, W. Cameron, G. Davies, P.J. Dornan, M. Girone, N. Marinelli, J. Nowell, S.A. Rutherford, J.K. Sedgbeer, J.C. Thompson, R. White, V.M. Ghete, P. Girtler, E. Kneringer, D. Kuhn, G. Rudolph, 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, O. van der Aa, C. Delaere, G. Leibenguth, V. Lemaitre, U. Blumenschein, F. Holldorfer, K. Jakobs, F. Kayser, K. Kleinknecht, A.S. Muller, B. Renk, H.G. Sander, S. Schmeling, H. Wachsmuth, C. Zeitnitz, T. Ziegler, A. Bonissent, P. Coyle, C. Curtil, A. Ealet, D. Fouchez, P. Payre, A. Tilquin, F. Ragusa, A. David, H. Dietl, G. Ganis, K. Huttmann, G. Lutjens, W. Manner, H.G. Moser, R. Settles, M. Villegas, G. Wolf, J. Boucrot, O. Callot, M. Davier, L. Duflot, J.F. Grivaz, P. Heusse, A. Jacholkowska, L. Serin, J.J. Veillet, P. Azzurri, G. Bagliesi, T. Boccali, L. Foa, A. Giammanco, A. Giassi, F. Ligabue, A. Messineo, F. Palla, G. Sanguinetti, A. Sciaba, P. Spagnolo, R. Tenchini, A. Venturi, P.G. Verdini, O. Awunor, G.A. Blair, G. Cowan, A. Garcia-Bellido, M.G. Green, T. Medcalf, A. Misiejuk, J.A. Strong, P. Teixeira-Dias, R.W. Clifft, T.R. Edgecock, P.R. Norton, I.R. Tomalin, J.J. Ward, B. Bloch-Devaux, D. Boumediene, P. Colas, B. Fabbro, E. Lancon, M.C. Lemaire, E. Locci, P. Perez, J. Rander, B. Tuchming, B. Vallage, A.M. Litke, G. Taylor, C.N. Booth, S. Cartwright, F. Combley, P.N. Hodgson, M. Lehto, L.F. Thompson, A. Boehrer, S. Brandt, C. Grupen, J. Hess, A. Ngac, G. Prange, C. Borean, G. Giannini, H. He, J. Putz, J. Rothberg, S.R. Armstrong, K. Berkelman, K. Cranmer, D.P.S. Ferguson, Y. Gao, S. Gonzalez, O.J. Hayes, H. Hu, S. Jin, J. Kile, P.A. McNamara, J. Nielsen, Y.B. Pan, J.H. von Wimmersperg-Toeller, W. Wiedenmann, J. Wu, S.L. Wu, X. Wu, G. Zobernig, G. Dissertori. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 49:2(2007), pp. 411-437. [10.1140/epjc/s10052-006-0156-8]
Fermion pair production in e+ e- collisions at 189-209-GeV and constraints on physics beyond the standard model
F. Ragusa;
2007
Abstract
Cross sections, angular distributions and forward-backward asymmetries are presented, of two-fermion events produced in e+e- collisions at centre-of-mass energies from 189 to 209 GeV at LEP, measured with the ALEPH detector. Results for e+e-, mu+mu-, tau+tau-, qq, bb and cc production are in agreement with the Standard Model predictions. Constraints are set on scenarios of new physics such as four-fermion contact interactions, leptoquarks, Z' bosons, TeV-scale quantum gravity and R-parity violating squarks and sneutrinos.Pubblicazioni consigliate
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