Elsevier

Nuclear Physics B

Volume 145, Issue 1, 27 November 1978, Pages 67-84
Nuclear Physics B

Inclusive π0 and η production in the all neutral mode from 100 GeV/c πp collisions

https://doi.org/10.1016/0550-3213(78)90413-3Get rights and content

Abstract

Results are givenfor π0 and η production in 100 GeV/c πp collisions, summed over all final states with no charged particles present (the all neutral final states). The data are fitted for x≳0.6 to a modification of triple Regge theory suggested by the multiperipheral model. We find good agreement between the values of the ϱ and A2 trajectories determined in the all neutral process, the full inclusive mode, πp → (π0, η)X, and the exclusive reactions, πp → (π0, η)n. The ϱ exchange residue function shows evidence for a dip at t ≈ −0.5 (GeV/c)2 (the ϱ wrong signature nonsense zero), whereas the η data are quite smooth in this region. These successful predictions for both the trajectory and residue function are striking evidence for the validity of triple Regge theory.

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    Work supported in part by the Department of Energy under Contract No. EY76-C-03-0068 (Caltech) and Contract No. W-7405-Eng-48 (Lawrence Berkeley Laboratory).

    ★★

    Supported in part by the Alfred P. Sloan Foundation.

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