Differential cross sections, charge production asymmetry, and spin-density matrix elements for D*±(2010) produced in 500 GeV/c π--nucleon interactions

E. M. Aitala*, S. Amato, J. C. Anjos, J. A. Appel, D. Ashery, S. Banerjee, I. Bediaga, G. Blaylock, S. B. Bracker, P. R. Burchat, R. A. Burnstein, T. Carter, H. S. Carvalho, N. K. Copty, L. M. Cremaldi, C. Darling, K. Denisenko, S. Devmal, A. Fernandez, G. F. FoxP. Gagnon, C. Gobel, K. Gounder, A. M. Halling, G. Herrera, G. Hurvits, C. James, P. A. Kasper, S. Kwan, D. C. Langs, J. Leslie, B. Lundberg, J. Magnin, A. Massafferri, S. MayTal-Beck, B. Meadows, J. R.T. De Mello Neto, D. Mihalcea, R. H. Milburn, J. M. De Miranda, A. Napier, A. Nguyen, A. B. D'Oliveira, K. O'Shaughnessy, K. C. Peng, L. P. Perera, M. V. Purohit, B. Quinn, S. Radeztsky, A. Rafatian, N. W. Reay, J. J. Reidy, A. C. Dos Reis, H. A. Rubin, D. A. Sanders, A. K.S. Santha, A. F.S. Santoro, A. J. Schwartz, M. Sheaff, R. A. Sidwell, A. J. Slaughter, M. D. Sokoloff, C. J. Solano Salinas, N. R. Stanton, R. J. Stefanski, K. Stenson, D. J. Summers, S. Takach, K. Thorne, A. K. Tripathi, S. Watanabe, R. Weiss-Babai, J. Wiener, N. Witchey, E. Wolin, S. M. Yang, D. Yi, S. Yoshida, R. Zaliznyak, C. Zhang

*Corresponding author for this work

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14 Scopus citations

Abstract

We report differential cross sections for the production of D*±(2010) produced in 500 GeV/c π--nucleon interactions from experiment E791 at Fermilab, as functions of Feynman-χ (χF) and transverse momentum squared (pT2). We also report the D*± charge asymmetry and spin-density matrix elements as functions of these variables. Investigation of the spin-density matrix elements shows no evidence of polarization. The average values of the spin alignment are (η) = 0.01 ± 0.02 and -0.01 ± 0.02 for leading and non-leading particles, respectively.

Original languageEnglish
Pages (from-to)218-226
Number of pages9
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume539
Issue number3-4
DOIs
StatePublished - 18 Jul 2002

Keywords

  • Charm hadroproduction
  • Differential cross section
  • Polarization
  • Spin alignment

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