2020 Impact factor 3.043
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


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

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.

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

© Società Italiana di Fisica, Springer-Verlag 2001