The Production of K0's in p+p Reactions

14th International Conference on Strangeness in Quark Matter

Berger-Chen, Jia-Chii^1 ; Fabbietti, Laura^1

Excellence Cluster Universe, TU München, Boltzmannstr. 2, 85748 Garching b. München, Germany^1

关键词: Beam energies;    Data sample;    Mass distribution;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/509/1/012037/pdf
DOI  :  10.1088/1742-6596/509/1/012037

来源: IOP

【 摘 要 】

We present the exclusive analysis of the reactions p+p → Y + Δ++/(p + π+) + K0, where Y stands for the Λ or Σ0hyperon. The proton-proton measurement was performed with the HADES setup at GSI, Darmstadt, at a kinetic beam energy of 3.5 GeV. A dedicated sideband technique allows to reproduce the non-strange background and its kinematics in the selected data sample. Therefore, it is possible to obtain the background subtracted missing mass distribution MM(pπ+π+π-), where we can separate the Λ from the Σ0channel. From a Monte Carlo simulation of possible reactions we see contributions also by the reactions p + p → Σ+/Σ(1385)++ p + K0. The ongoing analysis should provide exclusive cross sections of the mentioned reactions and their angular distributions.