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Direct semiexclusive production of energetic mesons
Phys. Rev. D 48, 147 – Published 1 July, 1993
DOI: https://doi.org/10.1103/PhysRevD.48.147
Abstract
The formation of color-singlet hadrons in hard-scattering processes is governed by process-independent distribution amplitudes. Such amplitudes may be measured in a class of processes we call semiexclusive, where one hadron is formed directly in hard scattering and the other QCD partons hadronize in jets. These processes can be identified experimentally by requiring a large angular or rapidity gap around a directly produced meson. We present cross sections for such processes, and show that experimental results, especially the ratio of charged to neutral production, are highly sensitive to the hadronic distribution amplitude. We discuss methods and prospects for thus gaining information about hadronic wave functions at present and future colliders.
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