| Página principal > The investigation of $K^+\pi^−, \pi^+K^−$ and $\pi^+\pi^−$ atoms |
| Published Articles | |
| Report number | DIRAC-CONF-2016-01 |
| Title | The investigation of $K^+\pi^−, \pi^+K^−$ and $\pi^+\pi^−$ atoms |
| Author(s) | Yazkov, Valeriy (SINP, Moscow) |
| Publication | 2016 |
| Number of pages | 6 |
| In: | EPJ Web Conf. 130 (2016) 01015 |
| In: | 14th International Workshop on Meson Production, Properties and Interaction, Krakow, Poland, 2 - 7 Jun 2016, pp.01015 |
| DOI | 10.1051/epjconf/201613001015 |
| Subject category | Nuclear Physics - Experiment |
| Accelerator/Facility, Experiment | CERN PS ; DIRAC PS212 |
| Abstract | Theory, using Low Energy QCD, predicts with high precision the pion-pion and pion-kaon scattering lengths. There is accurate relation between $K^+\pi^−$ and $\pi^+K^-$ atoms lifetime and pion-kaon S-wave scattering lengths with isospin 1/2 and 3/2. Experiment DIRAC at CERN PS detects $345 \pm 61$ pairs from $K^+\pi^-$ and $\pi^+K^-$ atoms breakup. It allows to achieve the first observation of exotic atoms consisted of pion and kaon. Measured values of $\pi K$ atom lifetime and corresponding pion-kaon scattering length difference are presented. It is shown, that experimental accuracy for pion-kaon scattering length difference could be significantly improved with an experiment at SPS energy. |
| Copyright/License | © 2016-2024 The Authors (License: CC-BY-4.0) |