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Article
Report number arXiv:1102.4748 ; CERN-PH-EP-2010-057 ; CERN-PH-EP-2010-057
Title A study of the b-quark fragmentation function with the DELPHI detector at LEP I and an averaged distribution obtained at the Z Pole
Author(s)

Abdallah, J. (Paris U., VI-VII) ; Abreu, P. (LIP, Lisbon) ; Adam, W. (Vienna, OAW) ; Adzic, P. (Democritos Nucl. Res. Ctr.) ; Albrecht, T. (KIT, Karlsruhe, EKP) ; Alemany-Fernandez, R. (CERN) ; Allmendinger, T. (KIT, Karlsruhe, EKP) ; Allport, P.P. (Liverpool U.) ; Amaldi, U. (Milan Bicocca U. ; INFN, Milan Bicocca) ; Amapane, N. (Turin U. ; INFN, Turin) ; Amato, S. (Rio de Janeiro Federal U.) ; Anashkin, E. (Padua U. ; INFN, Padua) ; Andreazza, A. (INFN, Milan ; Milan U.) ; Andringa, S. (LIP, Lisbon) ; Anjos, N. (LIP, Lisbon) ; Antilogus, P. (Paris U., VI-VII) ; Apel, W.D. (KIT, Karlsruhe, EKP) ; Arnoud, Y. (LPSC, Grenoble) ; Ask, S. (CERN) ; Asman, B. (Stockholm U.) ; Augustin, J.E. (Paris U., VI-VII) ; Augustinus, A. (CERN) ; Baillon, P. (CERN) ; Ballestrero, A. (INFN, Turin ; Turin U.) ; Bambade, P. (Orsay, LAL) ; Barbier, R. (Lyon, IPN) ; Bardin, D. (Dubna, JINR) ; Barker, G.J. (Rome III U. ; INFN, Rome3) ; Baroncelli, A. (Rome III U. ; INFN, Rome3) ; Battaglia, M. (CERN) ; Baubillier, M. (Paris U., VI-VII) ; Becks, K.H. (Wuppertal U.) ; Begalli, M. (Rio de Janeiro State U.) ; Behrmann, A. (Wuppertal U.) ; Ben-Haim, E. (Paris U., VI-VII) ; Benekos, N. (Natl. Tech. U., Athens) ; Benvenuti, A. (INFN, Bologna ; Bologna U.) ; Berat, C. (LPSC, Grenoble) ; Berggren, M. (Paris U., VI-VII) ; Bertrand, D. (Brussels U., IIHE) ; Besancon, M. (DAPNIA, Saclay) ; Besson, N. (DAPNIA, Saclay) ; Bloch, D. (Strasbourg, IPHC) ; Blom, M. (NIKHEF, Amsterdam) ; Bluj, M. (Warsaw, Inst. Nucl. Studies ; Warsaw U.) ; Bonesini, M. (Milan Bicocca U. ; INFN, Milan Bicocca) ; Boonekamp, M. (DAPNIA, Saclay) ; Booth, P.S.L. (Liverpool U.) ; Borisov, G. (Lancaster U.) ; Botner, O. (Uppsala U.) ; Bouquet, B. (Orsay, LAL) ; Bowcock, T.J.V. (Liverpool U.) ; Boyko, I. (Dubna, JINR) ; Bracko, M. (Stefan Inst., Ljubljana) ; Brenner, R. (Uppsala U.) ; Brodet, E. (Oxford U.) ; Bruckman, P. (Cracow, INP) ; Brunet, J.M. (College de France) ; Buschbeck, B. (Vienna, OAW) ; Buschmann, P. (Wuppertal U.) ; Calvi, M. (Milan Bicocca U. ; INFN, Milan Bicocca) ; Camporesi, T. (CERN) ; Canale, V. (Rome U., Tor Vergata ; INFN, Rome2) ; Carena, F. (CERN) ; Castro, N. (LIP, Lisbon) ; Cavallo, F. (INFN, Bologna ; Bologna U.) ; Chapkin, M. (Serpukhov, IHEP) ; Charpentier, Ph. (CERN) ; Checchia, P. (Padua U. ; INFN, Padua) ; Chierici, R. (CERN) ; Chliapnikov, P. (Serpukhov, IHEP) ; Chudoba, J. (CERN) ; Chung, S.U. (CERN) ; Cieslik, K. (Cracow, INP) ; Collins, P. (CERN) ; Contri, R. (Genoa U. ; INFN, Genoa) ; Cosme, G. (Orsay, LAL) ; Cossutti, F. (Trieste U. ; INFN, Trieste) ; Costa, M.J. (Valencia U. ; Valencia U., IFIC) ; Crennell, D. (Rutherford) ; Cuevas, J. (Oviedo U.) ; D'Hondt, J. (Brussels U., IIHE) ; da Silva, T. (Rio de Janeiro Federal U.) ; Da Silva, W. (Paris U., VI-VII) ; Della Ricca, G. (Trieste U. ; INFN, Trieste) ; De Angelis, A. (Udine U. ; INFN, Udine) ; De Boer, W. (KIT, Karlsruhe, EKP) ; De Clercq, C. (Brussels U., IIHE) ; De Lotto, B. (Udine U. ; INFN, Udine) ; De Maria, N. (Turin U. ; INFN, Turin) ; De Min, A. (Padua U. ; INFN, Padua) ; de Paula, L. (Rio de Janeiro Federal U.) ; Di Ciaccio, L. (Rome U., Tor Vergata ; INFN, Rome2) ; Di Simone, A. (Rome III U. ; INFN, Rome3) ; Doroba, K. (Warsaw, Inst. Nucl. Studies ; Warsaw U.) ; Drees, J. (CERN ; Wuppertal U.) ; Eigen, G. (Bergen U.) ; Ekelof, T. (Uppsala U.) ; Ellert, M. (Uppsala U.) ; Elsing, M. (CERN) ; Espirito Santo, M.C. (LIP, Lisbon) ; Fanourakis, G. (Democritos Nucl. Res. Ctr.) ; Fassouliotis, D. (Athens U. ; Democritos Nucl. Res. Ctr.) ; Feindt, M. (KIT, Karlsruhe, EKP) ; Fernandez, J. (Cantabria Inst. of Phys.) ; Ferrer, A. (Valencia U. ; Valencia U., IFIC) ; Ferro, F. (Genoa U. ; INFN, Genoa) ; Flagmeyer, U. (Wuppertal U.) ; Foeth, H. (CERN) ; Fokitis, E. (Natl. Tech. U., Athens) ; Fulda-Quenzer, F. (Orsay, LAL) ; Fuster, J. (Valencia U. ; Valencia U., IFIC) ; Gandelman, M. (Rio de Janeiro Federal U.) ; Garcia, C. (Valencia U. ; Valencia U., IFIC) ; Gavillet, Ph. (CERN) ; Gazis, E. (Natl. Tech. U., Athens) ; Gokieli, R. (CERN ; Warsaw, Inst. Nucl. Studies ; Warsaw U.) ; Golob, B. (Stefan Inst., Ljubljana ; Ljubljana U.) ; Gomez-Ceballos, G. (Cantabria Inst. of Phys.) ; Goncalves, P. (LIP, Lisbon) ; Graziani, E. (Rome III U. ; INFN, Rome3) ; Grosdidier, G. (Orsay, LAL) ; Grzelak, K. (Warsaw, Inst. Nucl. Studies ; Warsaw U.) ; Guy, J. (Rutherford) ; Haag, C. (KIT, Karlsruhe, EKP) ; Hallgren, A. (Uppsala U.) ; Hamacher, K. (Wuppertal U.) ; Hamilton, K. (Oxford U.) ; Haug, S. (Oslo U.) ; Hauler, F. (KIT, Karlsruhe, EKP) ; Hedberg, V. (Lund U.) ; Hennecke, M. (KIT, Karlsruhe, EKP) ; Hoffman, J. (Warsaw, Inst. Nucl. Studies ; Warsaw U.) ; Holmgren, S.O. (Stockholm U.) ; Holt, P.J. (CERN) ; Houlden, M.A. (Liverpool U.) ; Jackson, J.N. (Liverpool U.) ; Jarlskog, G. (Lund U.) ; Jarry, P. (DAPNIA, Saclay) ; Jeans, D. (Oxford U.) ; Johansson, E.K. (Stockholm U.) ; Jonsson, P. (Lyon, IPN) ; Joram, C. (CERN) ; Jungermann, L. (KIT, Karlsruhe, EKP) ; Kapusta, F. (Paris U., VI-VII) ; Katsanevas, S. (Lyon, IPN) ; Katsoufis, E. (Natl. Tech. U., Athens) ; Kernel, G. (Stefan Inst., Ljubljana) ; Kersevan, B.P. (Stefan Inst., Ljubljana ; Ljubljana U.) ; Kerzel, U. (KIT, Karlsruhe, EKP) ; King, B.T. (Liverpool U.) ; Kjaer, N.J. (CERN) ; Kluit, P. (NIKHEF, Amsterdam) ; Kokkinias, P. (Democritos Nucl. Res. Ctr.) ; Kourkoumelis, C. (Athens U.) ; Kouznetsov, O. (Dubna, JINR) ; Krumstein, Z. (Dubna, JINR) ; Kucharczyk, M. (Cracow, INP) ; Lamsa, J. (Iowa State U.) ; Leder, G. (Vienna, OAW) ; Ledroit, F. (LPSC, Grenoble) ; Leinonen, L. (Stockholm U.) ; Leitner, R. (Charles U.) ; Lemonne, J. (Brussels U., IIHE) ; Lepeltier, V. (Orsay, LAL) ; Lesiak, T. (Cracow, INP) ; Liebig, W. (Wuppertal U.) ; Liko, D. (Vienna, OAW) ; Lipniacka, A. (Stockholm U.) ; Lopes, J.H. (Rio de Janeiro Federal U.) ; Lopez, J.M. (Oviedo U.) ; Loukas, D. (Democritos Nucl. Res. Ctr.) ; Lutz, P. (DAPNIA, Saclay) ; Lyons, L. (Oxford U.) ; MacNaughton, J. (Vienna, OAW) ; Malek, A. (Wuppertal U.) ; Maltezos, S. (Natl. Tech. U., Athens) ; Mandl, F. (Vienna, OAW) ; Marco, J. (Cantabria Inst. of Phys.) ; Marco, R. (Cantabria Inst. of Phys.) ; Marechal, B. (Rio de Janeiro Federal U.) ; Margoni, M. (Padua U. ; INFN, Padua) ; Marin, J.C. (CERN) ; Mariotti, C. (CERN) ; Markou, A. (Democritos Nucl. Res. Ctr.) ; Martinez-Rivero, C. (Cantabria Inst. of Phys.) ; Masik, J. (Prague, Inst. Phys.) ; Mastroyiannopoulos, N. (Democritos Nucl. Res. Ctr.) ; Matorras, F. (Cantabria Inst. of Phys.) ; Matteuzzi, C. (Milan Bicocca U. ; INFN, Milan Bicocca) ; Mazzucato, F. (Padua U. ; INFN, Padua) ; Mazzucato, M. (Padua U. ; INFN, Padua) ; McNulty, R. (Liverpool U.) ; Meroni, C. (INFN, Milan ; Milan U.) ; Migliore, E. (Turin U. ; INFN, Turin) ; Mitaroff, W. (Vienna, OAW) ; Mjoernmark, U. (Lund U.) ; Moa, T. (Stockholm U.) ; Moch, M. (KIT, Karlsruhe, EKP) ; Moenig, K. (CERN) ; Monge, R. (Genoa U. ; INFN, Genoa) ; Montenegro, J. (NIKHEF, Amsterdam) ; Moraes, D. (Rio de Janeiro Federal U.) ; Moreno, S. (LIP, Lisbon) ; Morettini, P. (Genoa U. ; INFN, Genoa) ; Mueller, U. (Wuppertal U.) ; Muenich, K. (Wuppertal U.) ; Mulders, M. (NIKHEF, Amsterdam) ; Mundim, L. (Rio de Janeiro State U.) ; Murray, W. (Rutherford) ; Muryn, B. (AGH-UST, Cracow) ; Myatt, G. (Oxford U.) ; Myklebust, T. (Oslo U.) ; Nassiakou, M. (Democritos Nucl. Res. Ctr.) ; Navarria, F. (INFN, Bologna ; Bologna U.) ; Nawrocki, K. (Warsaw, Inst. Nucl. Studies ; Warsaw U.) ; Nemecek, S. (Prague, Inst. Phys.) ; Nicolaidou, R. (DAPNIA, Saclay) ; Nikolenko, M. (Strasbourg, IPHC ; Dubna, JINR) ; Oblakowska-Mucha, A. (AGH-UST, Cracow) ; Obraztsov, V. (Serpukhov, IHEP) ; Olshevski, A. (Dubna, JINR) ; Onofre, A. (LIP, Lisbon) ; Orava, R. (Helsinki Inst. of Phys. ; Helsinki U.) ; Osterberg, K. (Helsinki Inst. of Phys. ; Helsinki U.) ; Ouraou, A. (DAPNIA, Saclay) ; Oyanguren, A. (Valencia U. ; Valencia U., IFIC) ; Paganoni, M. (Milan Bicocca U. ; INFN, Milan Bicocca) ; Paiano, S. (INFN, Bologna ; Bologna U.) ; Palacios, J.P. (Liverpool U.) ; Palka, H. (Cracow, INP) ; Papadopoulou, Th.D. (Natl. Tech. U., Athens) ; Pape, L. (CERN) ; Parkes, C. (Glasgow U.) ; Parodi, F. (Genoa U. ; INFN, Genoa) ; Parzefall, U. (CERN) ; Passeri, A. (Rome III U. ; INFN, Rome3) ; Passon, O. (Wuppertal U.) ; Peralta, L. (LIP, Lisbon) ; Perepelitsa, V. (Valencia U. ; Valencia U., IFIC) ; Perrotta, A. (INFN, Bologna ; Bologna U.) ; Petrolini, A. (Genoa U. ; INFN, Genoa) ; Piedra, J. (Cantabria Inst. of Phys.) ; Pieri, L. (Rome III U. ; INFN, Rome3) ; Pierre, F. (DAPNIA, Saclay) ; Pimenta, M. (LIP, Lisbon) ; Piotto, E. (CERN) ; Podobnik, T. (Stefan Inst., Ljubljana ; Ljubljana U.) ; Poireau, V. (CERN) ; Pol, M.E. (Rio de Janeiro, CBPF) ; Polok, G. (Cracow, INP) ; Pozdniakov, V. (Dubna, JINR) ; Pukhaeva, N. (Dubna, JINR) ; Pullia, A. (Milan Bicocca U. ; INFN, Milan Bicocca) ; Radojicic, D. (Oxford U.) ; Rebecchi, P. (CERN) ; Rehn, J. (KIT, Karlsruhe, EKP) ; Reid, D. (NIKHEF, Amsterdam) ; Reinhardt, R. (Wuppertal U.) ; Renton, P. (Oxford U.) ; Richard, F. (Orsay, LAL) ; Ridky, J. (Prague, Inst. Phys.) ; Rivero, M. (Cantabria Inst. of Phys.) ; Rodriguez, D. (Cantabria Inst. of Phys.) ; Romero, A. (Turin U. ; INFN, Turin) ; Ronchese, P. (Padua U. ; INFN, Padua) ; Roudeau, P. (Orsay, LAL) ; Rovelli, T. (INFN, Bologna ; Bologna U.) ; Ruhlmann-Kleider, V. (DAPNIA, Saclay) ; Ryabtchikov, D. (Serpukhov, IHEP) ; Sadovsky, A. (Dubna, JINR) ; Salmi, L. (Helsinki Inst. of Phys. ; Helsinki U.) ; Salt, J. (Valencia U. ; Valencia U., IFIC) ; Sander, C. (KIT, Karlsruhe, EKP) ; Savoy-Navarro, A. (Paris U., VI-VII) ; Schwickerath, U. (CERN) ; Sekulin, R. (Rutherford) ; Siebel, M. (Wuppertal U.) ; Sisakian, A. (Dubna, JINR) ; Smadja, G. (Lyon, IPN) ; Smirnova, O. (Lund U.) ; Sokolov, A. (Serpukhov, IHEP) ; Sopczak, A. (Lancaster U.) ; Sosnowski, R. (Warsaw, Inst. Nucl. Studies ; Warsaw U.) ; Spassov, T. (CERN) ; Stanitzki, M. (KIT, Karlsruhe, EKP) ; Stocchi, A. (Orsay, LAL) ; Strauss, J. (Vienna, OAW) ; Stugu, B. (Bergen U.) ; Szczekowski, M. (Warsaw, Inst. Nucl. Studies ; Warsaw U.) ; Szeptycka, M. (Warsaw, Inst. Nucl. Studies ; Warsaw U.) ; Szumlak, T. (AGH-UST, Cracow) ; Tabarelli, T. (Milan Bicocca U. ; INFN, Milan Bicocca) ; Tegenfeldt, F. (Uppsala U.) ; Timmermans, J. (NIKHEF, Amsterdam) ; Tkatchev, L. (Dubna, JINR) ; Tobin, M. (Liverpool U.) ; Todorovova, S. (Prague, Inst. Phys.) ; Tome, B. (LIP, Lisbon) ; Tonazzo, A. (Milan Bicocca U. ; INFN, Milan Bicocca) ; Tortosa, P. (Valencia U. ; Valencia U., IFIC) ; Travnicek, P. (Prague, Inst. Phys.) ; Treille, D. (CERN) ; Tristram, G. (College de France) ; Trochimczuk, M. (Warsaw, Inst. Nucl. Studies ; Warsaw U.) ; Troncon, C. (INFN, Milan ; Milan U.) ; Turluer, M.L. (DAPNIA, Saclay) ; Tyapkin, I.A. (Dubna, JINR) ; Tyapkin, P. (Dubna, JINR) ; Tzamarias, S. (Democritos Nucl. Res. Ctr.) ; Uvarov, V. (Serpukhov, IHEP) ; Valenti, G. (INFN, Bologna ; Bologna U.) ; Van Dam, P. (NIKHEF, Amsterdam) ; Van Eldik, J. (CERN) ; van Remortel, N. (Antwerp U.) ; Van Vulpen, I. (CERN) ; Vegni, G. (INFN, Milan ; Milan U.) ; Veloso, F. (LIP, Lisbon) ; Venus, W. (Rutherford) ; Verdier, P. (Lyon, IPN) ; Verzi, V. (Rome U., Tor Vergata ; INFN, Rome2) ; Vilanova, D. (DAPNIA, Saclay) ; Vitale, L. (Trieste U. ; INFN, Trieste) ; Vrba, V. (Prague, Inst. Phys.) ; Wahlen, H. (Wuppertal U.) ; Washbrook, A.J. (Liverpool U.) ; Weiser, C. (KIT, Karlsruhe, EKP) ; Wicke, D. (CERN) ; Wickens, J. (Brussels U., IIHE) ; Wilkinson, G. (Oxford U.) ; Winter, M. (Strasbourg, IPHC) ; Witek, M. (Cracow, INP) ; Yushchenko, O. (Serpukhov, IHEP) ; Zalewska, A. (Cracow, INP) ; Zalewski, P. (Warsaw, Inst. Nucl. Studies ; Warsaw U.) ; Zavrtanik, D. (Nova Gorica U.) ; Zhuravlov, V. (Dubna, JINR) ; Zimine, N.I. (Dubna, JINR) ; Zintchenko, A. (Dubna, JINR) ; Zupan, M. (Democritos Nucl. Res. Ctr.)

Publication 2011
Imprint 27 Oct 2010
Number of pages 50
Note Comments: 50 pages, 18 figures, version as Accepted for publication by Eur. Phys. J. C
In: Eur. Phys. J. C 71 (2011) 1557
DOI 10.1140/epjc/s10052-011-1557-x
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LEP ; DELPHI
Abstract The nature of b-quark jet hadronisation has been investigated using data taken at the Z peak by the DELPHI detector at LEP. Two complementary methods are used to reconstruct the energy of weakly decaying b-hadrons, E^weak_B. The average value of x^weak_B = E^weak_B/E_beam is measured to be 0.699 +/- 0.011. The resulting x^weak_B distribution is then analysed in the framework of two choices for the perturbative contribution (parton shower and Next to Leading Log QCD calculation) in order to extract measurements of the non-perturbative contribution to be used in studies of b-hadron production in other experimental environments than LEP. In the parton shower framework, data favour the Lund model ansatz and corresponding values of its parameters have been determined within PYTHIA 6.156 from DELPHI data: a= 1.84^{+0.23}_{-0.21} and b=0.642^{+0.073}_{-0.063} GeV^-2, with a correlation factor rho = 92.2%. Combining the data on the b-quark fragmentation distributions with those obtained at the Z peak by ALEPH, OPAL and SLD, the average value of x^weak_B is found to be 0.7092 +/- 0.0025 and the non-perturbative fragmentation component is extracted. Using the combined distribution, a better determination of the Lund parameters is also obtained: a= 1.48^{+0.11}_{-0.10} and b=0.509^{+0.024}_{-0.023} GeV^-2, with a correlation factor rho = 92.6%.
Copyright/License Preprint: © 2010-2024 CERN (License: CC-BY-3.0)

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Email contact: catherine.zimmermann@cern.ch


 Zapis kreiran 2010-11-18, zadnja izmjena 2023-08-09


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