Production of $a_0^+$-mesons in the reaction $pp \to da_0^+$

H. Müller

doi:doi:10.1007/s100500170101

EPJ

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2023 Impact factor 2.6

Hadrons and Nuclei

Eur. Phys. J. A 11, 113-119 (2001)

Production of a₀⁺-mesons in the reaction $pp \to da_0^+$

H. Müller

Institut für Kern- und Hadronenphysik, Forschungszentrum Rossendorf, Postfach 510119, 01314 Dresden, Germany

H.Mueller@fz-rossendorf.de

(Received: 20 December 2000 / Revised version: 7 May 2001 Communicated by M. Garçon)

Abstract
We investigate the reaction $pp \to da_0^+$ at COSY and SIS energies together with accompanying background reactions and inclusive particle yields. The a₀⁺ is considered as a usual $u\bar{d}$ quark model state with two decay channels $a_0^+ \to K^+\bar{K^0}$ and $a_0^+ \to \pi^+ \eta$ . Calculated cross-sections for a₀⁺ production as well as for the corresponding non-resonant channels $pp \to dK^+\bar{K^0}$ and $pp \to d\pi^+\eta$ are compared. Especially, in case of the final channel $d\pi^+\eta$ , high statistics measurements are necessary to extract the a₀⁺ signal from the high non-resonant background.

PACS
13.75.Cs - Nucleon-nucleon interactions (including antinucleons, deuterons, etc.).
13.25.-k - Hadronic decays of mesons.

© Società Italiana di Fisica, Springer-Verlag 2001