Article

Search for the t and b' quarks in hadronic decays of the Z0 boson

P. AbreuLIP, Av. Elias Garcia 14 - le, P-1000 Lisbon Codex, PortugalW. AdamInstitute of High Energy PhysicsF. AdamiDPhPE, CEN-Saclay, F-91191 Gif-Sur-Yvette Cedex, FranceTim AdyeRutherford Appleton Laboratory, Chilton, Didcot OX11 0QX, UKG.D. AlekseevJoint Institute for Nuclear Research, Dubna, Head Post Office, P.O. Box 79, SU-101 000 Moscow, USSRJ.V. AllabyCERN, CH-1211 Geneva 23, SwitzerlandP. AllenInstituto de Fisica Corpuscular (IFIC), Centro Mixto Universidad de Valenaci-CSIC, Avda, Dr. Moliner 50, E-46100 Burjassot (Valencia, SpainS. AlmehedDepartment of Physics, University of Lund, Sölvegatan 14, S-223 63 Lund, SwedenF. AltedInstituto de Fisica Corpuscular (IFIC), Centro Mixto Universidad de Valenaci-CSIC, Avda, Dr. Moliner 50, E-46100 Burjassot (Valencia, SpainS.J. AlvsvaagDepartment of Physics, University of Bergen, Allégaten 55, N-5007 Bergen, NorwayU. AmaldiCERN, CH-1211 Geneva 23, SwitzerlandE. AnassontzisPhysics Laboratory, University of Athens, Solonos Street 104, GR-10680 Athens, GreeceW.D. ApelInstitut für Experimentelle Kernphysik, Universität Karlsruhe, Postfach 6980, D-7500 Karlsruhe 1, FRGB. ÅsmanInstitute of Physics, University of Stockholm, Vanadisvägen 9, S-113 46 Stockholm, SwedenC. Astor FerreresFacultad de Ciencias, Universidad de Santander, av. de los Castros, E-39005 Santander, SpainJ-E. AugustinUniversité Paris CitéA. AugustinusCERN, CH-1211 Geneva 23, SwitzerlandP. BaillonCERN, CH-1211 Geneva 23, SwitzerlandP. BambadeLaboratoire de l'Accelérateur Linéaire, Université de Paris-Sud, Bâtiment 200, F-91405 Orsay, FranceF. BarãoLIP, Av. Elias Garcia 14 - le, P-1000 Lisbon Codex, PortugalG. BarbielliniLaboratoire de Physique Corpusculaire, Collège de France, 11 place M. Berthelot, F-75231 Paris Cedex 5, FranceD.Y. BardinJoint Institute for Nuclear Research, Dubna, Head Post Office, P.O. Box 79, SU-101 000 Moscow, USSRA. BaroncelliIstituto Superiore di Sanitá, Istituto Nazionale di Fisica Nucleare (INFN), Viale Regina Elena 299, I-00161 Rome, Italy and Dipartimento di Fisica, Università di Roma II and INFN, Tor Vergata, I-00173 Rome, ItalyO. BärringDepartment of Physics, University of Lund, Sölvegatan 14, S-223 63 Lund, SwedenW. BartlInstitut für Experimentelle Kernphysik, Universität Karlsruhe, Postfach 6980, D-7500 Karlsruhe 1, FRGM.J. BatesNuclear Physics Laboratory, University of Oxford, Keble Road, Oxford OX1 3RH, UKB.V. BatyuniaJoint Institute for Nuclear Research, Dubna, Head Post Office, P.O. Box 79, SU-101 000 Moscow, USSRM. BaubillierLaboratoire de l'Accelérateur Linéaire, Université de Paris-Sud, Bâtiment 200, F-91405 Orsay, FranceK. H. BecksFachbereich Physik, University of Wuppertal, Postfach 100 127, D-5600 Wuppertal 1, FRGC. BeestonNuclear Physics Laboratory, University of Oxford, Keble Road, Oxford OX1 3RH, UKP. BeillièreLaboratoire de Physique Corpusculaire, Collège de France, 11 place M. Berthelot, F-75231 Paris Cedex 5, FranceI. BelokopytovInstitute for High Energy Physics, Serpukhov, P.O. Box 35, SU-142 284 Protvino (Moscow Region), USSRPedro J. BeltranGreek Atomic Energy Commission, Nuclear Research Centre Demokritos, P.O. Box 60228, GR-15310 Aghia Paraskevi, GreeceD. BenedicDivision des Hautes Energies, CRN-Groupe DELPHI, B.P. 20 CRO, F-67037 Strasbourg Cedex, FranceJ. BenllochConsejo Superior de Investigaciones Científicas, Madrid, SpainM. BerggrenInstitute of Physics, University of Stockholm, Vanadisvägen 9, S-113 46 Stockholm, SwedenDaniel BertrandUniversité Paris CitéS.F. BiagiDepartment of Physics, University of Liverpool, P.O. Box 147, Liverpool L69 3BX, UKF. BianchiDipartimento di Fisica Sperimentale, Universitá di Torino and INFN, Via P. Giuria 1, I-10125 Turin, ItalyJ.H. BibbyNuclear Physics Laboratory, University of Oxford, Keble Road, Oxford OX1 3RH, UKM.S. BilenkyJoint Institute for Nuclear Research, Dubna, Head Post Office, P.O. Box 79, SU-101 000 Moscow, USSRP. BillorLPNHE, Universités Paris VI et VII, Tour 33 (RdC), 4 place Jussieu, F-75230 Paris Cedex 05, FranceJ. BjarneDepartment of Physics, University of Lund, Sölvegatan 14, S-223 63 Lund, SwedenD. BlöchDivision des Hautes Energies, CRN-Groupe DELPHI, B.P. 20 CRO, F-67037 Strasbourg Cedex, FranceP.N. BogolubovJoint Institute for Nuclear Research, Dubna, Head Post Office, P.O. Box 79, SU-101 000 Moscow, USSRD. BolliniUniversity of Bologna, Bologna, ItalyT. BologneşeCERN, CH-1211 Geneva 23, SwitzerlandM. BonapartLaboratoire de l'Accelérateur Linéaire, Université de Paris-Sud, Bâtiment 200, F-91405 Orsay, FranceYu.E. BonyushkinJoint Institute for Nuclear Research, Dubna, Head Post Office, P.O. Box 79, SU-101 000 Moscow, USSRP.S.L. BoothDepartment of Physics, University of Liverpool, P.O. Box 147, Liverpool L69 3BX, UKM. BoratavSorbonne UniversitéP. BorgeaudDPhPE, CEN-Saclay, F-91191 Gif-Sur-Yvette Cedex, FranceH. BornerNuclear Physics Laboratory, University of Oxford, Keble Road, Oxford OX1 3RH, UKC. BosioIstituto Nazionale di Fisica Nucleare, Rome, ItalyO. BotnerDepartment of Radiation Sciences, University of Uppsala, P.O. Box 535, S-751 21 Uppsala, SwedenB. BouquetLaboratoire de l'Accelérateur Linéaire, Université de Paris-Sud, Bâtiment 200, F-91405 Orsay, FranceM. BozzoUniversity of Helsinki, Helsinki, FinlandS. BraibantCERN, CH-1211 Geneva 23, SwitzerlandP. BranchiniIstituto Nazionale di Fisica Nucleare, Rome, ItalyK.D. BrandFachbereich Physik, University of Wuppertal, Postfach 100 127, D-5600 Wuppertal 1, FRGR.A. BrennerUniversity of Helsinki, Helsinki, FinlandC. BricmanPhysics Department, Universitaire Instelling Antwerpen, Universiteitsplein 1, B-2610 Wilrijk, Belgium and IIHE, ULB-VUB, Pleinlaan 2, B-1050 Brussels, Belgium and Service de Physique des Particules Elémentaires, Faculté des Sciences, Université de l'Etat Mons, Av. Maistriau 19, B-7000 Mons, BelgiumR.C.A. BrownCERN, CH-1211 Geneva 23, SwitzerlandN. BrümmerCERN, CH-1211 Geneva 23, SwitzerlandJ.M. BrunetLaboratoire de Physique Corpusculaire, Collège de France, 11 place M. Berthelot, F-75231 Paris Cedex 5, FranceL. BuggePhysics Department, University of Oslo, Blindern, N-1000 Oslo 3, NorwayT. BuranPhysics Department, University of Oslo, Blindern, N-1000 Oslo 3, NorwayH. BurmeisterCERN, CH-1211 Geneva 23, SwitzerlandC. M. ButtarNuclear Physics Laboratory, University of Oxford, Keble Road, Oxford OX1 3RH, UKJ. BuytaertPhysics Department, Universitaire Instelling Antwerpen, Universiteitsplein 1, B-2610 Wilrijk, Belgium and IIHE, ULB-VUB, Pleinlaan 2, B-1050 Brussels, Belgium and Service de Physique des Particules Elémentaires, Faculté des Sciences, Université de l'Etat Mons, Av. Maistriau 19, B-7000 Mons, BelgiumM. CacciaDipartimento di Fisica, Università di Milano and INFN, Via Celoria 16, I-20133 Milan, ItalyM. CalviDipartimento di Fisica, Università di Milano and INFN, Via Celoria 16, I-20133 Milan, ItalyA.J. Camacho RozasFacultad de Ciencias, Universidad de Santander, av. de los Castros, E-39005 Santander, SpainJ.E. CampagneCERN, CH-1211 Geneva 23, SwitzerlandA. CampionDepartment of Physics, University of Liverpool, P.O. Box 147, Liverpool L69 3BX, UKT. CamporesiCERN, CH-1211 Geneva 23, SwitzerlandV. CanaleIstituto Superiore di Sanitá, Istituto Nazionale di Fisica Nucleare (INFN), Viale Regina Elena 299, I-00161 Rome, Italy and Dipartimento di Fisica, Università di Roma II and INFN, Tor Vergata, I-00173 Rome, ItalyF. CaoLIP, Av. Elias Garcia 14 - le, P-1000 Lisbon Codex, PortugalL. CarrollDepartment of Physics, University of Liverpool, P.O. Box 147, Liverpool L69 3BX, UKC. CasoUniversity of Oslo, Oslo, NorwayE. CastelliLaboratoire de l'Accelérateur Linéaire, Université de Paris-Sud, Bâtiment 200, F-91405 Orsay, FranceM.V. Castillo GimenezInstituto de Física CorpuscularA. CattaiCERN, CH-1211 Geneva 23, SwitzerlandF. R. CavalloUniversity of Bologna, Bologna, ItalyL. CerritoIstituto Nazionale di Fisica Nucleare, Rome, ItalyPh. CharpentierCERN, CH-1211 Geneva 23, SwitzerlandP. ChecchiaUniversity of Helsinki, Helsinki, FinlandG. A. ChelkovJoint Institute for Nuclear Research, Dubna, Head Post Office, P.O. Box 79, SU-101 000 Moscow, USSRL. ChevalierCERN, CH-1211 Geneva 23, SwitzerlandP. ChliapnikovInstitute for High Energy Physics, Serpukhov, P.O. Box 35, SU-142 284 Protvino (Moscow Region), USSRV. ChorowiczUniversity of BergenR. CirioUniversity of Turin, Turin, ItalyM.P. ClaraDipartimento di Fisica Sperimentale, Universitá di Torino and INFN, Via P. Giuria 1, I-10125 Turin, ItalyJ. L. ContrerasInstituto de Fisica Corpuscular (IFIC), Centro Mixto Universidad de Valenaci-CSIC, Avda, Dr. Moliner 50, E-46100 Burjassot (Valencia, SpainR. ContriUniversity of Genoa, Genoa, ItalyG. CosmeUniversité Paris Cité, Paris, FranceF. CouchotUniversité Paris Cité, Paris, FranceH. B. CrawleyInstitut für Experimentelle Kernphysik, Universität Karlsruhe, Postfach 6980, D-7500 Karlsruhe 1, FRGD. CrennelRutherford Appleton Laboratory, Chilton, Didcot OX11 0QX, UKM. CrestiUniversity of Genoa, Genoa, Italy

1990en

ABI

Abstract

No abstract available.

Identifiers

DOI: 10.1016/0370-2693(90)91808-o

Citations and references

Cited by 019 references