Production of Massive Muon Pairs in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi>π</mi></mrow><mrow><mo>−</mo></mrow></msup></mrow></math></span>-Nucleus Collisions

H. B. Greenlee; H. J. Frisch; C. Grosso-Pilcher; K. F. Johnson; M. D. Mestayer; L. Schachinger; M. J. Shochet; M. L. Swartz; P. A. Piroué; B. G. Pope; D. P. Stickland; R. L. Sumner

doi:10.1103/PhysRevLett.55.1555

Production of Massive Muon Pairs in $π^{-}$ -Nucleus Collisions

H. B. Greenlee, H. J. Frisch, C. Grosso-Pilcher, K. F. Johnson, M. D. Mestayer, L. Schachinger, M. J. Shochet, M. L. Swartz, P. A. Piroué, B. G. Pope, D. P. Stickland, and R. L. Sumner

Phys. Rev. Lett. 55, 1555 – Published 7 October 1985

Abstract

We present measurements of the differential cross section for the production of massive muon pairs in 225-GeV/c $π^{-}$ -nucleus collisions. We have used the data between the $ψ$ and $ϒ$ resonances in the framework of the Drell-Yan quark-antiquark annihilation model to predict the behavior of the cross section in the high-mass ( $m_{μ μ} > 11$ GeV/ $c^{2}$ ) region. The data are consistent with this extrapolation provided that a QCD leading-logarithmic evolution is included in the structure functions.

Received 23 July 1985

DOI:https://doi.org/10.1103/PhysRevLett.55.1555

Authors & Affiliations

H. B. Greenlee^*, H. J. Frisch, C. Grosso-Pilcher, K. F. Johnson, M. D. Mestayer^†, L. Schachinger^‡, M. J. Shochet, and M. L. Swartz^§

The Enrico Fermi Institute and Department of Physics, University of Chicago, Chicago, Illinois 60637

P. A. Piroué, B. G. Pope^∥, D. P. Stickland, and R. L. Sumner

Department of Physics, Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08544

^*Present address: Department of Physics, Yale University, New Haven, Conn. 06511.
^†Present address: Department of Physics and Astronomy, Vanderbilt University, Nashville, Tenn. 37235.
^‡Present address: Superconducting Super Collider, Lawrence Berkeley Laboratory, Berkeley, Calif. 94720.
^§Present address: EP Division, CERN, CH1211 Geneva 23, Switzerland.
^∥Present address: Department of Physics and Astronomy, Michigan State University, East Lansing, Mich. 48824.