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Статья

Measurement of the multiplicity of gluons splitting to bottom quark pairs in hadronic Z0 decays

P. AbreuInstitut für Experimentelle Kernphysik, Universität Karlsruhe, Postfach 6980, D-76128 Karlsruhe, GermanyW. AdamIFIC, Valencia-CSIC, and D.F.A.M.N., U. de Valencia, Avda. Dr. Moliner 50, E-46100 Burjassot Valencia, SpainTim AdyeRutherford Appleton Laboratory, Chilton, Didcot OX11 OQX, UKI. AjinenkoInst. for High Energy Physics, Serpukov P.O. Box 35, Protvino, Moscow Region), Russian FederationG.D. AlekseevFZU, Inst. of Physics of the C.A.S. High Energy Physics Division, Na Slovance 2, 180 40 Praha 8, Czech RepublicR. AlemanyDepartment of Radiation Sciences, University of Uppsala, P.O. Box 535, S-751 21 Uppsala, SwedenPhilip Patrick AllportDepartment of Physics, University of Liverpool, P.O. Box 147, Liverpool L69 3BX, UKS. AlmehedSchool of Physics and Chemistry, University of Lancaster, Lancaster LA1 4YB, UKU. AmaldiDepto. de Física, Pont. Univ. Católica, C.P. 38071, RJ-22453 Rio de Janeiro, BrazilS. AmatoIstituto di Fisica, Università di Udine, I-33100 Udine, ItalyPer AnderssonFysikum, Stockholm University, Box 6730, S-113 85 Stockholm, SwedenA. AndreazzaDepto. de Física, Pont. Univ. Católica, C.P. 38071, RJ-22453 Rio de Janeiro, BrazilP. AntilogusDepto. de Física, Pont. Univ. Católica, C.P. 38071, RJ-22453 Rio de Janeiro, BrazilW.D. ApelUniversity of Genoa, Genoa, ItalyB. ÅsmanFysikum, Stockholm University, Box 6730, S-113 85 Stockholm, SwedenJ-E. AugustinUniversité Claude Bernard de Lyon, IPNL, IN2P3-CNRS, F-69622 Villeurbanne Cedex, FranceA. AugustinusNIKHEF, Postbus 41882, NL-1009 DB Amsterdam, The NetherlandsP. BaillonCERN, CH-1211 Geneva 23, SwitzerlandP. BambadeUniversité de Paris-Sud, Lab. de l'Accélérateur Linéaire, IN2P3-CNRS, Bât. 200, F-91405 Orsay Cedex, FranceF. BarãoInstitut für Experimentelle Kernphysik, Universität Karlsruhe, Postfach 6980, D-76128 Karlsruhe, GermanyM. BarbiIstituto di Fisica, Università di Udine, I-33100 Udine, ItalyG. BarbielliniDipartimento di Fisica, Università di Trieste and INFN, Via A. Valerio 2, I-34127 Trieste, ItalyD. Y. BardinFZU, Inst. of Physics of the C.A.S. High Energy Physics Division, Na Slovance 2, 180 40 Praha 8, Czech RepublicGareth J. BarkerDepto. de Física, Pont. Univ. Católica, C.P. 38071, RJ-22453 Rio de Janeiro, BrazilA. BaroncelliIstituto Superiore di Sanità, Ist. Naz. di Fisica Nucl. (INFN), Viale Regina Elena 299, I-00161 Rome, ItalyO. BärringSchool of Physics and Chemistry, University of Lancaster, Lancaster LA1 4YB, UKM.J. BatesRutherford Appleton Laboratory, Chilton, Didcot OX11 OQX, UKM. BattagliaNational Centre of Scientific Research "Demokritos"M. BaubillierUniversité Paris CitéJ. BaudotUniversité Claude Bernard de Lyon, IPNL, IN2P3-CNRS, F-69622 Villeurbanne Cedex, FranceK. H. BecksFachbereich Physik, University of Wuppertal, Postfach 100 127, D-42097 Wuppertal, GermanyM. BegalliDepartment of Physics, University of Bergen, Allégaten 55, N-5007 Bergen, NorwayP. BeillièreCentro Brasileiro de Pesquisas Físicas, rua Xavier Sigaud 150, RJ-22290 Rio de Janeiro, BrazilYu. BelokopytovK. BelousJoint Institute for Nuclear Research, Dubna, Head Post Office, P.O. Box 79, 101 000 Moscow, Russia FederationA. C. BenvenutiPhysics Laboratory, University of Athens, Solonos Str. 104, GR-10680 Athens, GreeceM. BerggrenIstituto di Fisica, Università di Udine, I-33100 Udine, ItalyD. BertiniUniversité de Paris-Sud, Lab. de l'Accélérateur Linéaire, IN2P3-CNRS, Bât. 200, F-91405 Orsay Cedex, FranceDaniel BertrandUniversity of AntwerpM. BesançonUniversité Paris CitéF. BianchiDipartimento di Fisica Sperimentale, Università di Torino and INFN, Via P. Giuria 1, I-10125 Turin, ItalyM. BigiDipartimento di Fisica Sperimentale, Università di Torino and INFN, Via P. Giuria 1, I-10125 Turin, ItalyM.S. BilenkyFZU, Inst. of Physics of the C.A.S. High Energy Physics Division, Na Slovance 2, 180 40 Praha 8, Czech RepublicP. BilloirUniversité de Paris-Sud, Lab. de l'Accélérateur Linéaire, IN2P3-CNRS, Bât. 200, F-91405 Orsay Cedex, FranceM. A. BizouardFysikum, Stockholm University, Box 6730, S-113 85 Stockholm, SwedenD. BlöchInst. de Física, Univ. Estadual do Rio de Janeiro, rua São Francisco Xavier 524, Rio de Janeiro, BrazilM. BlumeFachbereich Physik, University of Wuppertal, Postfach 100 127, D-42097 Wuppertal, GermanyM. BonesiniUniversity of Milan, Milan, ItalyW. BoniventoDipartimento di Fisica, Università di Milano and INFN, Via Celoria 16, I-20133 Milan, ItalyP.S.L. BoothInstitute of Nuclear Physics and University of Mining and Metalurgy, Ul. Kawiory 26a, PL-30055 Krakow, PolandA. W. BorglandFaculté des Sciences, Univ. de l'Etat Mons, Av. Maistriau 19, B-7000 Mons, BelgiumG. BorisovNIKHEF, Postbus 41882, NL-1009 DB Amsterdam, The NetherlandsC. BosioIstituto Superiore di Sanità, Ist. Naz. di Fisica Nucl. (INFN), Viale Regina Elena 299, I-00161 Rome, ItalyO. BotnerUniv. Federal do Rio de Janeiro, C.P. 68528 Cidade Univ., Ilha do Fundão, BR-21945-970 Rio de Janeiro, BrazilE. BoudinovUniversité Paris CitéB. BouquetLIP, IST, FCUL - Av, Elias Garcia, 14-1(0), P-1000 Lisboa Codex, PortugalC. BourdariosHelsinki Institute of Physics, HIP, P.O. Box 9, FIN-00014 Helsinki, FinlandT. J. V. BowcockInstitute of Nuclear Physics and University of Mining and Metalurgy, Ul. Kawiory 26a, PL-30055 Krakow, PolandM. BozzoCERN, CH-1211 Geneva 23, SwitzerlandP. BranchiniIstituto Superiore di Sanità, Ist. Naz. di Fisica Nucl. (INFN), Viale Regina Elena 299, I-00161 Rome, ItalyK.D. BrandDipartimento di Fisica, Università di Padova and INFN, Via Marzolo 8, I-35131 Padua, ItalyT. BrenkeFachbereich Physik, University of Wuppertal, Postfach 100 127, D-42097 Wuppertal, GermanyR.A. BrennerLIP, IST, FCUL - Av, Elias Garcia, 14-1(0), P-1000 Lisboa Codex, PortugalC. BricmanPhysics Department, Univ. Instelling Antwerpen, Universiteitsplein 1, B-2610 Wilrijk, BelgiumR.C.A. BrownDepto. de Física, Pont. Univ. Católica, C.P. 38071, RJ-22453 Rio de Janeiro, BrazilP. BrückmanInstitut des Sciences Nucléaires, IN2P3-CNRS, Université de Grenoble 1, F-38026 Grenoble Cedex, FranceJ-M. BrunetCentro Brasileiro de Pesquisas Físicas, rua Xavier Sigaud 150, RJ-22290 Rio de Janeiro, BrazilL. BuggePhysics Department, University of Oslo, Blindern, N-1000 Oslo 3, NorwayT. BuranPhysics Department, University of Oslo, Blindern, N-1000 Oslo 3, NorwayT. BurgsmuellerFachbereich Physik, University of Wuppertal, Postfach 100 127, D-42097 Wuppertal, GermanyP. BuschmannFachbereich Physik, University of Wuppertal, Postfach 100 127, D-42097 Wuppertal, GermanyS. CabreraDepartment of Radiation Sciences, University of Uppsala, P.O. Box 535, S-751 21 Uppsala, SwedenM. CacciaDipartimento di Fisica, Università di Milano and INFN, Via Celoria 16, I-20133 Milan, ItalyM. CalviUniversity of Milan, Milan, ItalyA.J. Camacho RozasInstituto de Física de CantabriaT. CamporesiDepto. de Física, Pont. Univ. Católica, C.P. 38071, RJ-22453 Rio de Janeiro, BrazilV. CanaleJoint Institute for Nuclear Research, Dubna, Head Post Office, P.O. Box 79, 101 000 Moscow, Russia FederationM. CanepaCERN, CH-1211 Geneva 23, SwitzerlandF. CaoPhysics Department, Univ. Instelling Antwerpen, Universiteitsplein 1, B-2610 Wilrijk, BelgiumF. CarenaLIP, IST, FCUL - Av, Elias Garcia, 14-1(0), P-1000 Lisboa Codex, PortugalL. CarrollCERN, CH-1211 Geneva 23, SwitzerlandC. CasoCERN, CH-1211 Geneva 23, SwitzerlandM.V. Castillo GimenezDepartment of Radiation Sciences, University of Uppsala, P.O. Box 535, S-751 21 Uppsala, SwedenA. CattaiDepto. de Física, Pont. Univ. Católica, C.P. 38071, RJ-22453 Rio de Janeiro, BrazilF. R. CavalloPhysics Laboratory, University of Athens, Solonos Str. 104, GR-10680 Athens, GreeceV. ChabaudJoint Institute for Nuclear Research, Dubna, Head Post Office, P.O. Box 79, 101 000 Moscow, Russia FederationPh. CharpentierL. ChaussardLIP, IST, FCUL - Av, Elias Garcia, 14-1(0), P-1000 Lisboa Codex, PortugalP. ChecchiaUniversity of Padua, Padua, ItalyG. A. ChelkovFZU, Inst. of Physics of the C.A.S. High Energy Physics Division, Na Slovance 2, 180 40 Praha 8, Czech RepublicMeiyi ChenUniversity of AntwerpR. ChiericiDipartimento di Fisica Sperimentale, Università di Torino and INFN, Via P. Giuria 1, I-10125 Turin, ItalyP. ChliapnikovUniversité de Paris-Sud, Lab. de l'Accélérateur Linéaire, IN2P3-CNRS, Bât. 200, F-91405 Orsay Cedex, FranceP. ChochulaDipartimento di Fisica, Università di Bologna and INFN, Via Irnerio 46, I-40126 Bologna, ItalyV. ChorowiczLIP, IST, FCUL - Av, Elias Garcia, 14-1(0), P-1000 Lisboa Codex, PortugalV. CindroDepartment of Astroparticle Physics, School of Environmental Sciences, Kostanjeviska 16a, SI-5000 Nova Gorica, SloveniaP. CollinsDepto. de Física, Pont. Univ. Católica, C.P. 38071, RJ-22453 Rio de Janeiro, BrazilR. ContriCERN, CH-1211 Geneva 23, SwitzerlandE. CortinaDepartment of Radiation Sciences, University of Uppsala, P.O. Box 535, S-751 21 Uppsala, SwedenG. CosmeHelsinki Institute of Physics, HIP, P.O. Box 9, FIN-00014 Helsinki, Finland
1997en
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