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J/ψ production in pp̄ collisions at √s = 1.8 TeV

  • S. Abachi*
  • , B. Abbott
  • , M. Abolins
  • , B. S. Acharya
  • , I. Adam
  • , D. L. Adams
  • , M. Adams
  • , S. Ahn
  • , H. Aihara
  • , J. Alitti
  • , G. Álvarez
  • , G. A. Alves
  • , E. Amidi
  • , N. Amos
  • , E. W. Anderson
  • , S. H. Aronson
  • , R. Astur
  • , R. E. Avery
  • , A. Baden
  • , V. Balamurali
  • J. Balderston, B. Baldin, J. Bantly, J. F. Bartlett, K. Bazizi, J. Bendich, S. B. Beri, I. Bertram, V. A. Bezzubov, P. C. Bhat, V. Bhatnagar, M. Bhattacharjee, A. Bischoff, N. Biswas, G. Blazey, S. Blessing, P. Bloom, A. Boehnlein, N. I. Bojko, F. Borcherding, J. Borders, C. Boswell, A. Brandt, R. Brock, A. Bross, D. Buchholz, V. S. Burtovoi, J. M. Butler, W. Carvalho, D. Casey, H. Castilla-Valdez, D. Chakraborty, S. M. Chang, S. V. Chekulaev, L. P. Chen, W. Chen, S. Chopra, B. C. Choudhary, J. H. Christenson, M. Chung, D. Claes, A. R. Clark, W. G. Cobau, J. Cochran, W. E. Cooper, C. Cretsinger, D. Cullen-Vidal, M. A.C. Cummings, D. Cutts, O. I. Dahl, K. De, M. Demarteau, R. Demina, K. Denisenko, N. Denisenko, D. Denisov, S. P. Denisov, H. T. Diehl, M. Diesburg, G. di Loreto, R. Dixon, P. Draper, J. Drinkard, Y. Ducros, S. R. Dugad, S. Durston-Johnson, D. Edmunds, J. Ellison, V. D. Elvira, R. Engelmann, S. Eno, G. Eppley, P. Ermolov, O. V. Eroshin, V. N. Evdokimov, S. Fahey, T. Fahland, M. Fatyga, M. K. Fatyga, J. Featherly, S. Feher, D. Fein, T. Ferbel, G. Finocchiaro, H. E. Fisk, Y. Fisyak, E. Flattum, G. E. Forden, M. Fortner, K. C. Frame, P. Franzini, S. Fuess, E. Gallas, A. N. Galyaev, T. L. Geld, R. J. Genik, K. Genser, C. E. Gerber, B. Gibbard, V. Glebov, S. Glenn, J. F. Glicenstein, B. Gobbi, M. Goforth, A. Goldschmidt, B. Gómez, P. I. Goncharov, J. L. Gonzalez Solís, H. Gordon, L. T. Goss, N. Graf, P. D. Grannis, D. R. Green, J. Green, H. Greenlee, G. Griffin, N. Grossman, P. Grudberg, S. Grünendahl, W. X. Gu, G. Guglielmo, J. A. Guida, J. M. Guida, W. Guryn, S. N. Gurzhiev, P. Gutierrez, Y. E. Gutnikov, N. J. Hadley, H. Haggerty, S. Hagopian, V. Hagopian, K. S. Hahn, R. E. Hall, S. Hansen, R. Hatcher, J. M. Hauptman, D. Hedin, A. P. Heinson, U. Heintz, R. Hernández-Montoya, T. Heuring, R. Hirosky, J. D. Hobbs, B. Hoeneisen, J. S. Hoftun, F. Hsieh, H. Tao, H. Ting, H. Tong, T. Huehn, S. Igarashi, A. S. Ito, E. James, J. Jaques, S. A. Jerger, J. Z.Y. Jiang, T. Joffe-Minor, H. Johari, K. Johns, M. Johnson, H. Johnstad, A. Jonckheere, M. Jones, H. Jöstlein, S. Y. Jun, C. K. Jung, S. Kahn, G. Kalbfleisch, J. S. Kang, R. Kehoe, M. L. Kelly, L. Kerth, C. L. Kim, S. K. Kim, A. Klatchko, B. Klima, B. I. Klochkov, C. Klopfenstein, V. I. Klyukhin, V. I. Kochetkov, J. M. Kohli, D. Koltick, A. V. Kostritskiy, J. Kotcher, J. Kourlas, A. V. Kozelov, E. A. Kozlovski, M. R. Krishnaswamy, S. Krzywdzinski, S. Kunori, S. Lami, G. Landsberg, J. F. Lebrat, A. Leflat, H. Li, J. Li, Y. K. Li, Q. Z. Li-Demarteau, J. G.R. Lima, D. Lincoln, S. L. Linn, J. Linnemann, R. Lipton, Y. C. Liu, F. Lobkowicz, S. C. Loken, S. Lökös, L. Lueking, A. L. Lyon, A. K.A. Maciel, R. J. Madaras, R. Madden, S. Mani, H. S. Mao, S. Margulies, R. Markeloff, L. Markosky, T. Marshall, M. I. Martin, M. Marx, B. May, A. A. Mayorov, R. McCarthy, T. McKibben, J. McKinley, T. McMahon, H. L. Melanson, J. R.T. de Mello Neto, K. W. Merritt, H. Miettinen, A. Mincer, J. M. de Miranda, C. S. Mishra, M. Mohammadi-Baarmand, N. Mokhov, N. K. Mondal, H. E. Montgomery, P. Mooney, H. da Motta, M. Mudan, C. Murphy, C. T. Murphy, F. Nang, M. Narain, V. S. Narasimham, A. Narayanan, H. A. Neal, J. P. Negret, E. Neis, P. Nemethy, D. Nešić, M. Nicola, D. Norman, L. Oesch, V. Oguri, E. Oltman, N. Oshima, D. Owen, P. Padley, M. Pang, A. Para, C. H. Park, Y. M. Park, R. Partridge, N. Parua, M. Paterno, J. Perkins, A. Peryshkin, M. Peters, H. Piekarz, Y. Pischalnikov, V. M. Podstavkov, B. G. Pope, H. B. Prosper, S. Protopopescu, D. Pušeljić, J. Qian, P. Z. Quintas, R. Raja, S. Rajagopalan, O. Ramirez, M. V.S. Rao, P. A. Rapidis, L. Rasmussen, A. L. Read, S. Reucroft, M. Rijssenbeek, T. Rockwell, N. A. Roe, P. Rubinov, R. Ruchti, J. Rutherfoord, A. Santoro, L. Sawyer, R. D. Schamberger, H. Schellman, J. Sculli, E. Shabalina, C. Shaffer, H. C. Shankar, Y. Y. Shao, R. K. Shivpuri, M. Shupe, J. B. Singh, V. Sirotenko, W. Smart, A. Smith, R. P. Smith, R. Snihur, G. R. Snow, S. Snyder, J. Solomon, P. M. Sood, M. Sosebee, M. Souza, A. L. Spadafora, R. W. Stephens, M. L. Stevenson, D. Stewart, D. A. Stoianova, D. Stoker, K. Streets, M. Strovink, A. Sznajder, A. Taketani, P. Tamburello, J. Tarazi, M. Tartaglia, T. L. Taylor, J. Thompson, T. G. Trippe, P. M. Tuts, N. Varelas, E. W. Varnes, P. R.G. Virador, D. Vititoe, A. A. Volkov, A. P. Vorobiev, H. D. Wahl, G. Wang, J. Warchol, G. Watts, M. Wayne, H. Weerts, F. Wen, A. White, J. T. White, J. A. Wightman, J. Wilcox, S. Willis, S. J. Wimpenny, J. V.D. Wirjawan, J. Womersley, E. Won, D. R. Wood, H. Xu, R. Yamada, P. Yamin, C. Yanagisawa, J. Yang, T. Yasuda, C. Yoshikawa, S. Youssef, J. Yu, Y. Yu, D. H. Zhang, Q. Zhu, Z. H. Zhu, D. Zieminska, A. Zieminski, E. G. Zverev, A. Zylberstejn
*Corresponding author for this work
  • Fermi National Accelerator Laboratory
  • New York University
  • Michigan State University
  • Tata Institute of Fundamental Research, Mumbai
  • Columbia University
  • Rice University
  • University of Illinois at Chicago
  • Lawrence Berkeley National Laboratory
  • DAPNIA/Service de Physique des Particules
  • Indiana University Bloomington
  • Centro Brasileiro de Pesquisas Fisicas
  • Northeastern University
  • University of Michigan, Ann Arbor
  • Iowa State University
  • Brookhaven National Laboratory
  • Stony Brook University
  • Northwestern University
  • University of Maryland, College Park
  • University of Notre Dame
  • University of Hawaiʻi at Mānoa
  • Brown University
  • University of Rochester
  • Panjab University
  • Institute for High Energy Physics
  • University of Delhi
  • University of California at Riverside
  • Florida State University
  • University of California, Davis
  • Boston University
  • Centro de Investigacion y de Estudios Avanzados del Instituto Politécnico Nacional
  • University of Texas at Arlington
  • University of California at Irvine
  • Universidad de Buenos Aires
  • Lomonosov Moscow State University
  • University of Arizona
  • Northern Illinois University
  • Universidad de los Andes Colombia
  • Texas AandM University
  • University of Oklahoma Bioengineering Center
  • Superconducting Super Collider Laboratory
  • Korea University
  • Seoul National University
  • Purdue University
  • Universidade do Estado do Rio de Janeiro
  • Kyungsung University
  • Institute of High Energy Physics Chinese Academy of Science
  • University of Nebraska-Lincoln

Research output: Contribution to journalArticlepeer-review

133 Scopus citations

Abstract

We have studied J/ψ production in pp̄ collisions at √s = 1.8 TeV with the DØ detector at Fermilab using μ+- data. We have measured the inclusive J/ψ production cross section as a function of J/ψ transverse momentum, pT. For the kinematic range pT > 8 GeV/c and |η\ < 0.6 we obtain σ(pp̄ → J/ψ + X) ·Br(J/ψ → μ+μ-) = 2.08 ± 0.17(stat) ± 0.46(syst) nb. Using the muon impact parameter we have estimated the fraction of J/ψ mesons coming from B meson decays to be fb = 0.35 ± 0.09(stat)±0.10(syst) and inferred the inclusive b production cross section. From the information on the event topology the fraction of nonisolated J/ψ events has been measured to be fnonisol = 0.64 ± 0.08(stat)±0.06(syst). We have also obtained the fraction of J/ψ events resulting from radiative decays of χc states, fχ = 0.32 ± 0.07(stat)±0.07(syst). We discuss the implications of our measurements for charmonium production processes.

Original languageEnglish
Pages (from-to)239-248
Number of pages10
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume370
Issue number1-2
DOIs
StatePublished - 7 Mar 1996

Keywords

  • Beauty
  • Charmonium
  • QCD
  • Tevatron

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