We present measurements of the production symmetric high-mass hadron and pion pairs by protons of 200, 300, and 400 GeV, incident on a beryllium target. The two-particle invariant cross section for pion production can be described by the function E₁E₂d⁶σdp₁³dp₂³=(1.7×10^-28)pₜ^-8.4(1-xₜ)¹⁴ cm²/GeV⁴ (where pₜ is the mean pₜ of the two hadrons). Functions of the same form have been used in describing single-pion inclusive production. Equality of the exponents of pₜ in the two processes is observed, confirming the role of smearing contributions to single-hadron cross sections.
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Jöstlein et al. (1979) studied this question.
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