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Physics Letters B
Volume 298, Issues 1-2, 7 January 1993, Pages 236-246
 
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doi:10.1016/0370-2693(93)91736-7    
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Copyright © 1993 Published by Elsevier Science B.V. All rights reserved.

Measurement of inclusive production of light meson resonances in hadronic decays of the Z0

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DELPHI Collaboration, P. Abreua, W. Adamb, T. Adyec, E. Agasid, G. D. Alekseeve, A. Algerif, P. Alleng, S. Almehedh, S. J. Alvsvaagi, U. Amaldij, E. G. Anassontzisk, A. Andreazzal, P. Antilogusm, W. -D. Apeln, R. J. Apsimonc, B. Åsmano, J. -E. Augustinp, A. Augustinusd, P. Baillonj, P. Bambadep, F. Baraoa, R. Barateq, G. Barbiellinir, r, D. Y. Bardine, G. Barkers, A. Baroncellit, O. Barringh, J. A. Barriob, W. Bartlb, M. J. Batesc, M. Battagliaf, M. Baubillierv, K. -H. Becksw, C. J. Beestons, M. Begallix, P. Beillierey, Yu. Belokopytovz, P. Beltranaa, D. Benedicab, A. C. Benvenutiac, M. Berggrenp, D. Bertrandad, ad, ad, F. Bianchiae, M. S. Bilenkye, P. Billiorv, J. Bjarneh, D. Blochab, S. Blyths, V. Bocciaf, P. N. Bogolubove, T. Bologneseag, M. Bonesinil, W. Boniventol, P. S. L. Boothah, P. Borgeaudag, G. Borisovz, H. Bornerj, C. Bosiot, B. Bostjancicai, S. Bosworths, O. Botneraj, B. Bouquetp, C. Bourdarionp, T. J. V. Bowcockah, M. Bozzoak, S. Braibantad, ad, ad, P. Branchinit, K. D. 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Torassaae, L. Tortorat, D. Treillea, U. Trevisanak, W. Trischukj, G. Tristramy, C. Tronconl, A. Tsirouj, E. N. Tsyganove, M. -L. Turluerag, T. Tuuvaf, I. A. Tyapkinv, M. Tyndelc, S. Tzamariasj, S. Ueberschaerw, O. Ullalandj, V. Uvarovz, G. Valentiac, E. Vallazzaae, J. A. Valls Ferrerg, C. Vander Veldead, ad, ad, G. W. Van Apeldoornd, P. Van Damd, M. Van Der Heijdend, W. K. Van Doninckad, ad, ad, P. Vazj, G. Vegnil, L. Venturaaℓ, W. Venusc, F. Verbeuread, ad, ad, L. S. Vertogradove, D. Vilanovaag, P. Vincentm, L. Vitalef, E. Vlasovz, A. S. Vodopyanove, M. Vollmerw, G. Voulgarisk, M. Voutilainenf, V. Vrbat, H. Wahlenw, C. Walcko, F. Waldnerr, r, M. Wayneao, A. Wehrw, M. Weierstallw, P. Weilhammerj, J. Wernerw, A. M. Wetherellj, J. H. Wickensad, ad, ad, G. R. Wilkinsons, W. S. C. Williamss, M. Winterab, M. Witekat, G. Wormserp, K. Woschnaggaj, N. Yamdagnio, P. Yepesj, A. Zaitsevz, A. Zalewskaat, P. Zalewskip, D. Zavrtanikai, E. Zevgolatakosaa, G. Zhangw, N. I. Zimine, M. Zitoag, R. Zuberis, R. Zukanovich Funchaly, G. Zumerleaℓ and J. Zunigag

a LIP, IST, FOUL, Av. Elias Garcia 14-1°, P-1000, Lisbon Codex, Portugal

b Institut für Hochenergiephysik, Österreichische Akademie der Wissenschaften, Nikolsdorfergasse 18, A-1050, Vienna, Austria

c Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX, UK

d NIKHEF-H, Postbus 41882, NL-1009 DB, Amsterdam, The Netherlands

e Joint Institute for Nuclear Research, Dubna, Head Post Office, P.O. Box 79, 101 000, Moscow, Russian Federation

f Research Institute for High Energy Physics, SEFT, Siltavuorenpenger 20 C, SF-00170, Helsinki 17, Finland

g IFIC, Valencia-CSIC, and DFAMN, Universidad de Valencia, Avda. Dr. Moliner 50, E-46100 Burjassot, Valencia, Spain

h Department of Physics, University of Lund, Sölvegatan 14, S-223 63, Lund, Sweden

i Department of Physics, University of Bergen, Allégaten 55, N-5007, Bergen, Norway

j CERN, CH-1211, Geneva 23, Switzerland

k Physics Laboratory, University of Athens, Solonos Street 104, GR-10680, Athens, Greece

l Dipartimento di Fisica, Università di Milano and INFN, Via Celoria 16, I-20133, Milan, Italy

m Université Claude Bernard de Lyon, IPNL, IN2P3-CNRS, 43 boulevard du 11 Novembre 1918, F-69622, Villeurbanne Cedex, France

n Institut für Experimentelle Kernphysik, Universität Karlsruhe, Pf. 6980, W-7500, Karlsruhe 1, FRG

o Institute of Physics, University of Stockholm, Vanadisvägen 9, S-113 46, Stockholm, Sweden

p Laboratoire de l'Accélérateur Linéaire, Université de Paris-Sud, Bâtiment 200, F-91405, Orsay, France

q Institut des Sciences Nucléaires, IN2P3-CNRS, Université de Grenoble 1, F-38026, Grenoble, France

r Dipartimento di Fisica, Università di Trieste and INFN, Via A. Valeria 2, I-34127, Trieste, Italy

r Istituto di Fisica, Università di Udine, I-33100, Udine, Italy

s Nuclear Physics Laboratory, University of Oxford, Keble Road, Oxford OX1 3RH, UK

t Istituto Superiore di Sanità, Istituto Nazionale di Fisica Nucleare (INFN), Viale Regina Elena 299, I-00161, Rome, Italy

u Universidad Complutense, Avda. Complutense s/n, E-28040, Madrid, Spain

v LPNHE, IN2P3-CNRS, Universités Paris VI et VII, Tour 33 (RdC), 4 place Jussieu, F-75252, Paris Cedex 05, France

w Fachbereich Physik, University of Wuppertal, Pf. 100 127, W-5600, Wuppertal 1, FRG

x Departamento de Fisica, Pontificia Universidade Católica, CP 38071 RJ-22453, Rio de Janeiro, Brazil

y Laboratoire de Physique Corpusculaire, Collège de France, F-75231, Paris Cedex 5, France

z Institute for High Energy Physics, Serpukhov, P.O. Box 35, 142 284 Protvino, Moscow Region, Russian Federation

aa Institute of Nuclear Physics, NCSR Demokritos, P.O. Box 60228, GR-15310, Athens, Greece

ab Centre de Rercherche Nucléaire, IN2P3-CNRS/ULP, B.P. 20, F-67037, Strasbourg Cedex, France

ac Dipartimento di Fisica, Università di Bologna and INFN, Via Irnerio 46, I-40126, Bologna, Italy

ad Physics Department, Universitaire Instelling Antwerpen, Universiteitsplein 1, B-2610, Wilrijk, Belgium

ad IIHE, ULB-VUB, Pleinlaan 2, B-1050, Brussels, Belgium

ad Faculté des Sciences, Université de l'Etat Mons, Av. Maistriau 19, B-7000, Mons, Belgium

ae Dipartimento di Fisica Sperimentale, Università di Torino and INFN, Via P. Giuria 1, I-10125, Turin, Italy

af Dipartimento di Fisica, Università di Roma II and INFN, Tor Vergata, I-00173, Rome, Italy

ag Centre d'Etude de Saclay, DSM/DAPNIA, F-91191, Gif-sur-Yvette Cedex, France

ah Department of Physics, University of Liverpool, P.O. Box 147, Liverpool L69 3BX, UK

ai J. Stefan Institute and Department of Physics, University of Ljubljana, Jamova 39, SI-61000, Ljubljana, Slovenia

aj Department of Radiation Sciences, University of Uppsala, P.O. Box 535, S-751 21, Uppsala, Sweden

ak Dipartimento di Fisica, Università di Genova and INFN, Via Dodecaneso 33, I-16146, Genoa, Italy

aℓ Dipartimento di Fisica, Università di Padova and INFN, Via Marzolo 8, I-35131, Padua, Italy

am Physics Department, University of Oslo, Blindern, N-1000, Oslo 3, Norway

an Facultad de Ciencias, Universidad de Santander, av. de los Castros, E-39005, Santander, Spain

ao Ames Laboratory and Department of Physics, Iowa State University, Ames IA 50011, USA

ap Niels Bohr Institute, Blegdamsvej 17, DK-2100, Copenhagen Ø, Denmark

aq Institute for Nuclear Studies, and University of Warsaw, Ul. HoImage a 69, PL-006 81, Warsaw, Poland

ar Physics Department, National Technical University, Zografou Campus, GR-15773, Athens, Greece

as Université d'Aix, Marseille II - CPP, IN2P3-CNRS, Case 907, F-13288, Marseille Cedex 09, France

at High Energy Physics Laboratory, Institute of Nuclear Physics, Ul. Kawiory 26 a, PL-300 55, Cracow 30, Poland

au NC, Nuclear Centre of MFF, Charles University, Areal MFF, V Holesovickach 2, CS-180 00, Praha 8, Czechoslovakia

av School of Physics and Materials, University of Lancaster, Lancaster LA1 4YB, UK

aw FZU, Institute of Physics, High Energy Physics Division, Czechoslovak Academy of Sciences, Na Slovance 2, CS-180 40, Praha 8, Czechoslovakia

ay Centro Brasileiro de Pesquisas, rua Xavier Sigaud 150, RJ-22290, Rio de Janeiro, Brazil


Received 13 November 1992. 
Available online 15 October 2002.

Abstract

A study of inclusive production of the meson resonances ρ0, K*0 (892), ƒ0 (975) and ƒ2 (1270) in hadronic decays of the Z0 is presented. The measured mean meson multiplicity per hadronic event is 0.83 ± 0.14 for the ρ0 0.64 ± 0.24 for the K*0 (892), 0.10 ± 0.04 for the ƒ0 (975) in the momentum range p > 0.05pbeam (xp > 0.05) and 0.11 ± 0.05 for the ƒ2 (1270) for xp > 0.1. These values and the corresponding differential cross sections (1/σhadr) dσ/dxp for the vector mesons are in good agreement with the predictions of the JETSET 7.3 PS and HERWIG 5.4 models. The ƒ2 (1270) production is overestimated by HERWIG but its xp-shape is correctly reproduced. The measured ratios of the production cross sections σ(ƒ2(1270))/σ(ρ0) = 0.22 ± 0.08 and σ(ƒ2(1270))/σ(ƒ0(975)) = 3−1+7 for xp > 0.1 are consistent with the results obtained in hadronic reactions.

Article Outline

• References

Physics Letters B
Volume 298, Issues 1-2, 7 January 1993, Pages 236-246
 
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