Fermion pair production in e+e- collisions at 189-209 GeV and constraints on physics beyond the standard model
- Autori: SCHAEL S; BARATE R; BRUNELIE; RE R; DE BONIS I; DECAMP D; GOY C; JE; ZE; QUEL S; LEES J-; MARTIN F; MERLE E; MINARD M-; PIETRZYK B; TROCME; B; BRAVO S; CASADO MP; CHMEISSANI M; CRESPO JM; FERNANDEZ E; FERNANDEZ-BOSMAN M; GARRIDO L; MARTINEZ M; PACHECO A; RUIZ H; COLALEO A; CREANZA D; DE FILIPPIS N; DE PALMA M; IASELLI G; MAGGI G; MAGGI M; NUZZO S; RANIERI A; RASO G; RUGGIERI F; SELVAGGI G; SILVESTRIS L; TEMPESTA P; TRICOMI A; ZITO G; HUANG X; LIN J; OUYANG Q; WANG T; XIE Y; XU R; XUE S; ZHANG J; ZHANG L; ZHAO W; ABBANEO D; BARKLOW T; BUCHMU; LLER O; CATTANEO M; CLERBAUX B; DREVERMANN H; FORTY RW; FRANK M; GIANOTTI F; HANSEN JB; HARVEY J; HUTCHCROFT DE; JANOT P; JOST B; KADO M; MATO P; MOUTOUSSI A; RANJARD F; ROLANDI L; SCHLATTER D; TEUBERT F; VALASSI A; VIDEAU I; BADAUD F; DESSAGNE S; FALVARD A; FAYOLLE D; GAY P; JOUSSET J; MICHEL B; MONTEIL S; PALLIN D; PASCOLO JM; PERRET P; HANSEN JD; HANSEN JR; HANSEN PH; KRAAN AC; NILSSON BS; KYRIAKIS A; MARKOU C; SIMOPOULOU E; VAYAKI A; ZACHARIADOU K; BLONDEL A; BRIENT J-; MACHEFERT F; ROUGE; A; VIDEAU H; CIULLI V; FOCARDI E; PARRINI G; ANTONELLI A; ANTONELLI M; BENCIVENNI G; BOSSI F; CAPON G; CERUTTI F; CHIARELLA V; LAURELLI P; MANNOCCHI G; MURTAS GP; PASSALACQUA L; KENNEDY J; LYNCH JG; NEGUS P; O'SHEA V; THOMPSON AS; WASSERBAECH S; CAVANAUGH R; DHAMOTHARAN S; GEWENIGER C; HANKE P; HEPP V; KLUGE EE; PUTZER A; STENZEL H; TITTEL K; WUNSCH M; BEUSELINCK R; CAMERON W; DAVIES G; DORNAN PJ; GIRONE M; MARINELLI N; NOWELL J; RUTHERFORD SA; SEDGBEER JK; THOMPSON JC; WHITE R; GHETE VM; GIRTLER P; KNERINGER E; KUHN D; RUDOLPH G; BOUHOVA-THACKER E; BOWDERY CK; CLARKE DP; ELLIS G; FINCH AJ; FOSTER F; HUGHES G; JONES RWL; PEARSON MR; ROBERTSON NA; SLOAN T; SMIZANSKA M; VAN DER AA O; DELAERE C; LEIBENGUTH G; LEMAITRE V; BLUMENSCHEIN U; HO; LLDORFER F; JAKOBS K; KAYSER F; MU; LLER A-; RENK B; SANDER H-; SCHMELING S; WACHSMUTH H; ZEITNITZ C; ZIEGLER T; BONISSENT A; COYLE P; CURTIL C; EALET A; FOUCHEZ D; PAYRE P; TILQUIN A; RAGUSA F; DAVID A
- Anno di pubblicazione: 2007
- Tipologia: Articolo in rivista (Articolo in rivista)
- OA Link: http://hdl.handle.net/10447/30624
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-, μ+μ-, τ+τ-, qq̄, bb̄ and cc̄ 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.