Phys. Rev. D
49,
R4317–R4320
(1994)
D*± production in 250 GeV π±N interactions
G. A. Alves et al. (Fermilab E769 Collaboration)
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G. A. Alves1, S. Amato1,*, J. C. Anjos1, J. A. Appel2, J. Astorga5, S. B. Bracker4, L. M. Cremaldi3, C. L. Darling7, R. L. Dixon2, D. Errede6,†, H. C. Fenker2,‡, C. Gay4,§, D. R. Green2, A. M. Halling2, R. Jedicke4, P. E. Karchin7, S. Kwan2, L. H. Lueking2, P. M. Mantsch2, J. R. T. de Mello Neto1,**, J. Metheny5, R. H. Milburn5, J. M. de Miranda1,*, H. da Motta Filho1, A. Napier5, D. Passmore5, A. Rafatian3, A. C. dos Reis1, W. R. Ross7,††, A. F. S. Santoro1, M. Sheaff6, M. H. G. Souza1, W. J. Spalding2, C. Stoughton2, M. E. Streetman2, D. J. Summers3, S. F. Takach7, A. Wallace7, and Z. Wu7 (Fermilab E769 Collaboration)
1Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro, Brazil 2Fermi National Accelerator Laboratory, Batavia, Illinois 60510 3University of Mississippi, Oxford, Mississippi 38677 4University of Toronto, Toronto, Ontario, Canada M5S 1A7 5Tufts University, Medford, Massachusetts 02155 6University of Wisconsin, Madison, Wisconsin 53706 7Yale University, New Haven, Connecticut 06511
Received 10 September 1993; published in the issue dated 1 May 1994
We report results from Fermilab experiment E769 on the differential cross sections of D*± charm vector mesons with respect to Feynman-x (xF) and transverse momentum (PT), and on the atomic mass dependence of the production. The D* mesons were produced by a 250 GeV π beam on a target of Be, Al, Cu, and W foils. The dσ/dxF distribution is fit by the form ((1-xF)n) with n=3.5±0.3±0.1, the dσ/dPT2 distribution by exp(-b×PT2) with b=0.70±0.07±0.04 GeV-2, and the cross section A dependence by Aα with α=1.00±0.07±0.02. These results are compared to the equivalent parameters for the production of pseudoscalar D0 and D± charm mesons.
© 1994 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.49.R4317
DOI:
10.1103/PhysRevD.49.R4317
PACS:
13.85.Ni, 12.38.Qk, 25.80.Ls
*Now at: Pontificia Universidade Católica do Rio de Janeiro, Rio de Janeiro, Brazil. †Now at: University of Illinois, Urbana, IL 61801. ‡Now at: SSC Laboratory, Dallas, TX 75237. §Now at: CERN, CH-1211, Genève 23, Switzerland. **Now at: Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil. ††Now at: University of Oklahoma, Norman, OK 73071.
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