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π±, K±, p and p̄ production in Z0 → qq̄, Z0 bb̄, Z0 → uū, dd̄, ss̄

  • P. Abreu
  • , W. Adam
  • , T. Adye
  • , P. Adzic
  • , I. Ajinenko
  • , G. D. Alekseev
  • , R. Alemany
  • , P. P. Allport
  • , S. Almehed
  • , U. Amaldi
  • , S. Amato
  • , E. G. Anassontzis
  • , P. Andersson
  • , A. Andreazza
  • , P. Antilogus
  • , W. D. Apel
  • , Y. Arnoud
  • , B. Åsman
  • , J. E. Augustin
  • , A. Augustinus
  • P. Baillon, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D. Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K. H. Becks, M. Begalli, P. Beilliere, Y. Belokopytov, K. Belous, A. C. Benvenuti, C. Berat, M. Berggren, D. Bertini, D. Bertrand, M. Besancon, F. Bianchi, M. Bigi, M. S. Bilenky, M. A. Bizouard, D. Bloch, M. Bonesini, W. Bonivento, M. Boonekamp, P. S.L. Booth, A. W. Borgland, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, C. Bourdarios, T. J.V. Bowcock, I. Boyko, I. Bozovic, M. Bozzo, P. Branchini, T. Brenke, R. A. Brenner, P. Bruckman, J. M. Brunet, L. Bugge, T. Buran, T. Burgsmueller, P. Buschmann, S. Cabrera, M. Caccia, M. Calvi, A. J. Camacho Rozas, T. Camporesi, V. Canale, M. Canepa, F. Carena, L. Carroll, C. Caso, M. V. Castillo Gimenez, A. Cattai, F. R. Cavallo, C. Cerruti, V. Chabaud, P. Charpentier, L. Chaussard, P. Checchia, G. A. Chelkov, M. Chen, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, P. Collins, M. 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Roudeau, T. Rovelli, V. Ruhlmann-Kleider, A. Ruiz, H. Saarikko, Y. Sacquin, A. Sadovsky, G. Sajot, J. Salt, D. Sampsonidis, M. Sannino, H. Schneider, P. Schwemling, U. Schwickerath, M. A.E. Schyns, F. Scuri, P. Seager, Y. Sedykh, A. M. Segar, R. Sekulin, V. Senko, R. C. Shellard, A. Sheridan, R. Silvestre, L. Simard, F. Simonetto, A. N. Sisakian, T. B. Skaali, G. Smadja, O. Smirnova, G. R. Smith, O. Solovianov, A. Sopczak, R. Sosnowski, T. Spassov, E. Spiriti, P. Sponholz, S. Squarcia, D. Stampfer, C. Stanescu, S. Stanic, S. Stapnes, K. Stevenson, A. Stocchi, J. Strauss, R. Strub, B. Stugu, M. Szczekowski, M. Szeptycka, T. Tabarelli, F. Tegenfeldt, F. Terranova, J. Thomas, A. Tilquin, J. Timmermans, L. G. Tkatchev, T. Todorov, S. Todorova, D. Z. Toet, A. Tomaradze, B. Tome, A. Tonazzo, L. Tortora, G. Transtromer, D. Treille, G. Tristram, A. Trombini, C. Troncon, A. Tsirou, M. L. Turluer, I. A. Tyapkin, S. Tzamarias, B. Ueberschaer, O. Ullaland, V. Uvarov, G. Valenti, E. Vallazza, C. 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  • Faculdade de Ciências, Universidade de Lisboa
  • Institut für Hochenergiephysik
  • CCLRC Rutherford Appleton Laboratory
  • Institute of Nuclear Physics Demokritos
  • Kurchatov Institute
  • Joint Institute for Nuclear Research, Dubna
  • University of Valencia
  • University of Liverpool
  • Lund University
  • European Organization for Nuclear Research
  • Instituto de Biofisica da UFRJ
  • University of Athens
  • Stockholm University
  • IGFL, Université de Lyon, Université Lyon 1
  • Universität Karlsruhe/Forschungszentrum Karlsruhe
  • Université Paris-Sud
  • Université Paris-Saclay
  • University of Trieste
  • and Physics University of Udine
  • University Roma Tre
  • Helsinki Institute of Physics
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  • Bergische Universität Gesamthochschule Wuppertal
  • Centro Brasileiro de Pesquisas Fisicas
  • Pontifícia Universidade Católica do Rio de Janeiro
  • Rua São Francisco de Xavier
  • University of Bologna
  • University of Antwerp
  • Inter-University Institute for High Energies ULB-VUB
  • Université de Mons
  • Institut Pierre Simon Laplace, CNRS and CEA
  • University of Turin
  • University of Milano
  • University of Bergen
  • University of Rome
  • Uppsala University
  • Science Park 105
  • University of Genoa
  • University of Padova
  • University of Oslo
  • Instituto de Fisica de Cantabria (CSIC-UC)
  • University of Rome “Tor Vergata”
  • Comenius University
  • Charles University
  • Iowa State University
  • University of Oviedo
  • Niels Bohr Institutet
  • Aix Marseille Université
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  • National Technical University of Athens
  • Department of Biochemistry and Molecular and Structural Biology
  • School of Environmental Sciences Ljubljana
  • University of Ljubljana
  • University of Florida
  • University of Oxford
  • Agh University of Science and Technology Faculty of Computer Science
  • Institute of Physics of the Czech Academy of Sciences
  • Lancaster University

Résultats de recherche: Contribution à un journalArticleRevue par des pairs

Résumé

The DELPHI experiment at LEP uses Ring Imaging Cherenkov detectors for particle identification. The good understanding of the RICH detectors allows the identification of charged pions, kaons and protons, covering the full momentum range from 0.7 < p < 45.6GeV/c. The π±, K±, p and p̄ normalised production rates, their differential cross sections, multiplicities and the maxima ξ*p of_the ξp = ln (1/Xp) distributions are measured for three event samples Z0 → qq̄, Z0 → bb̄, Z0 → uū, dd̄, ss̄, selected from ∼ 1 400 000 Z0 decays collected by DELPHI in 1994. The results are compared to the predictions of the JETSET string fragmentation model and the HERWIG cluster fragmentation model. The Modified Leading Logarithm Approximation with Local Parton-Hadron Duality is tested. The ξ*p dependence on the primary quark flavour is investigated and quantified for the different particle distributions. The π± , K±, p and p̄ multiplicities are measured with precisions from ±4% to ±6%. Forche Z0 → qq̄, and Z0 → bb̄, event samples, these improve on previous measurements. The π±, K±, p and p̄ multiplicities for Z0 → uū, dd̄, ss̄ are presented for the first time.

langue originaleAnglais
Pages (de - à)585-620
Nombre de pages36
journalEuropean Physical Journal C
Volume5
Numéro de publication4
étatPublié - 1 janv. 1998
Modification externeOui

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