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Measurement of the bb̄ production cross section in 920 GeV fixed-target proton-nucleus collisions: The HERA - B collaboration

  • I. Abt
  • , A. Abyzov
  • , M. Adams
  • , H. Albrecht
  • , V. Amaral
  • , A. Amorim
  • , S. J. Aplin
  • , A. Arefiev
  • , I. Ariño
  • , M. Atiya
  • , V. Aushev
  • , Y. Bagaturia
  • , R. Baghshetsyan
  • , V. Balagura
  • , M. Bargiotti
  • , S. Barsuk
  • , O. Barsukova
  • , V. Bassetti
  • , J. Bastos
  • , C. Bauer
  • T. S. Bauer, M. Beck, A. Belkov, A. Belkov, I. Belotelov, I. Belyaev, K. Berkhan, A. Bertin, B. Bobchenko, M. Böcker, A. Bogatyrev, G. Bohm, C. Borgmeier, M. Bräuer, D. Broemmelsiek, M. Bruinsma, M. Bruschi, P. Buchholz, M. Buchler, T. Buran, M. Capeáns, M. Capponi, J. Carvalho, J. Chamanina, B. X. Chen, R. Chistov, M. Chmeissani, A. Christensen, P. Conde, C. Cruse, M. Dam, K. M. Danielsen, M. Danilov, S. de Castro, H. Deckers, K. Dehmelt, H. Deppe, B. Dolgoshein, X. Dong, H. B. Dreis, M. Dressel, D. Dujmic, R. Eckmann, V. Egorytchev, K. Ehret, V. Eiges, F. Eisele, D. Emeliyanov, S. Erhan, S. Essenov, L. Fabbri, P. Faccioli, W. Fallot-Burghardt, M. Feuerstack-Raible, J. Flammer, H. Fleckenstein, B. Fominykh, S. Fourletov, T. Fuljahn, M. Funcke, D. Galli, A. Garcia, L. Garrido, D. Gascon, A. Gellrich, K. E.K. Gerndt, B. Giacobbe, J. Gläß, T. Glebe, D. Goloubkov, A. Golutvin, I. Golutvin, I. Gorbounov, A. Gorišek, O. Gouchtchine, D. C. Goulart, S. Gradl, W. Gradl, Y. Guilitsky, T. Hamacher, J. D. Hansen, R. Harr, C. Hast, S. Hausmann, J. M. Hernández, M. Hildebrandt, A. Hölscher, K. Höpfner, W. Hofmann, M. Hohlmann, T. Hott, W. Hulsbergen, U. Husemann, O. Igonkina, M. Ispiryan, S. Issever, H. Itterbeck, J. Ivarsson, T. Jagla, Y. Jia, C. Jiang, A. Kaoukher, H. Kapitza, S. Karabekyan, P. Karchin, N. Karpenko, Z. Ke, S. Keller, F. Khasanov, H. Kim, Y. Kiryushin, I. Kisel, F. Klefenz, K. T. Knöpfle, V. Kochetkov, H. Kolanoski, S. Korpar, C. Krauss, P. Kreuzer, P. Križan, D. Krücker, T. Kvaratskheliia, A. Lange, A. Lanyov, K. Lau, G. Leffers, I. Legrand, B. Lewendel, Y. Q. Liu, T. Lohse, R. Loke, B. Lomonosov, J. Lüdemann, R. Männer, R. Mankel, U. Marconi, S. Masciocchi, I. Massa, I. Matchikhilian, G. Medin, M. Medinnis, M. Mevius, A. Michetti, Yu Mikhailov, R. Miquel, R. Mizuk, A. Mohapatra, A. Moshkin, B. Moshous, R. Muresan, S. Nam, M. Negodaev, I. Négri, M. Nörenberg, S. Nowak, M. T. Núñez Pardo de Vera, T. Oest, A. Oliveira, M. Ouchrif, F. Ould-Saada, C. Padilla, P. Pakhlov, Y. Pavlenko, D. Peralta, R. Pernack, T. Perschke, R. Pestotnik, B. AA Petersen, M. Piccinini, M. A. Pleier, M. Poli, V. Popov, A. Pose, D. Pose, V. Pugatch, Y. Pylypchenko, J. Pyrlik, S. Ramachandran, F. Ratnikov, K. Reeves, D. Reßing, K. Riechmann, J. Rieling, M. Rietz, I. Riu, P. Robmann, J. Rosen, Ch Rothe, W. Ruckstuhl, V. Rusinov, V. Rybnikov, D. Ryzhikov, F. Saadi-Lüdemann, D. Samtleben, F. Sanchez, M. Sang, V. Saveliev, A. Sbrizzi, S. Schaller, P. Schlein, M. Schmelling, B. Schmidt, S. Schmidt, W. Schmidt-Parzefall, A. Schreiner, H. Schröder, H. D. Schultz, U. Schwanke, A. J. Schwartz, A. S. Schwarz, B. Schwenninger, B. Schwingenheuer, R. Schwitters, F. Sciacca, S. Semenov, N. Semprini-Cesari, E. Sexauer, L. Seybold, J. Shiu, S. Shuvalov, I. Siccama, D. Škrk, L. Sözüer, A. Soldatov, S. Solunin, A. Somov, S. Somov, V. Souvorov, M. Spahn, J. Spengler, R. Spighi, A. Spiridonov, S. Spratte, A. Stanovnik, M. Starič, R. StDenis, C. Stegmann, S. Steinbeck, O. Steinkamp, D. Stieler, U. Straumann, F. Sun, H. Sun, M. Symalla, S. Takach, N. Tesch, H. Thurn, I. Tikhomirov, M. Titov, U. Trunk, P. Truöl, I. Tsakov, U. Uwer, V. Vagnoni, C. van Eldik, R. van Staa, Yu Vassiliev, M. Villa, A. Vitale, I. Vukotic, G. Wagner, W. Wagner, H. Wahlberg, A. H. Walenta, M. Walter, T. Walter, J. J. Wang, Y. M. Wang, R. Wanke, D. Wegener, U. Werthenbach, P. J. Weyers, H. Wolters, R. Wurth, A. Wurz, S. Xella-Hansen, J. Yang, Y. Zaitsev, M. Zavertyaev, G. Zech, T. Zeuner, A. Zhelezov, Z. Zheng, Z. Zhu, R. Zimmermann, T. Živko, A. Zoccoli, J. Zweizig
  • Max-Planck-Institut für Physik
  • Joint Institute for Nuclear Research, Dubna
  • University of Dortmund
  • c/o DESY
  • LIP Coimbra
  • Institute for Theoretical and Experimental Physics
  • University of Barcelona
  • Brookhaven National Laboratory
  • Institute of Nuclear Research, National Academy of Sciences in Ukraine
  • High Energy Physics Institute
  • Yerevan Physics Institute
  • University of Bologna
  • Northwestern University
  • Max-Planck-Institut für Kernphysik
  • Universiteit Utrecht
  • Science Park 105
  • Universität Rostock
  • Humboldt-Universität zu Berlin
  • Wayne State University
  • University of Oslo
  • National Research Nuclear University MEPhI
  • Tsinghua University
  • Niels Bohr Institutet
  • University of Heidelberg
  • Institute of High Energy Physics, Chinese Academy of Sciences
  • The University of Texas at Austin
  • University of California, Los Angeles
  • University of Mannheim
  • Universität Siegen
  • Department of Biochemistry and Molecular and Structural Biology
  • University of Cincinnati
  • Kurchatov Institute
  • University of Houston
  • Lund University
  • University of Maribor
  • University of Ljubljana
  • P.N. Lebedev Physical Institute of the Russian Academy of Sciences
  • Universität Hamburg
  • University of Florence
  • Physik-Institut der Universität Zürich
  • Institute of Nuclear Power Engineering
  • Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences

Research output: Contribution to journalArticlepeer-review

Abstract

Using the HERA - B detector, the bb̄ production cross section has been measured in 920 GeV proton collisions on carbon and titanium targets. The bb̄ production was tagged via inclusive bottom quark decays into J/ψ by exploiting the longitudinal separation of J/ψ → l+l- decay vertices from the primary proton-nucleus interaction. Both e+e- and μ+μ- channels have been reconstructed and the combined analysis yields the cross section σ(bb̄) = 32-12+14 (stat)-7+6(sys) nb/nucleon.

Original languageEnglish
Pages (from-to)345-355
Number of pages11
JournalEuropean Physical Journal C
Volume26
Issue number3
DOIs
Publication statusPublished - 1 Jan 2003
Externally publishedYes

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