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3pi photo-production with CLAS

Mina Nozar
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Abstract

The $3π$ system produced in the reaction $γp \to π^{+}π^{+}π^{-} n$ at $4.8-5.4$ GeV is investigated from the E01-017 (g6c) running of CLAS. This energy range allows for the study of excited mesons in the 1-2 GeV mass range, in their decay to $3π$, proceeding through $ρπ$ and $f_2 π$ emissions. At these energies, there is significant overlap in phase space for events with $ρ$ and $f_2$ production, recoiling off an excited baryon, such as the $Δ(1232)$, $N^*(1520)$ and $N^*(1680)$. We show that after few kinematic selections, events of the latter type are suppressed in the final data set, allowing us to perform a PWA on the $3π$ system.

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Mina Nozar. 2003-12-10. 3pi photo-production with CLAS. https://arxiv.org/abs/hep-ex/0312037

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