| Issue |
EPJ Web Conf.
Volume 130, 2016
MESON 2016 – 14th International Workshop on Meson Production, Properties and Interaction
|
|
|---|---|---|
| Article Number | 03010 | |
| Number of page(s) | 3 | |
| Section | 03 Physics of the η meson - contributions | |
| DOI | https://doi.org/10.1051/epjconf/201613003010 | |
| Published online | 29 November 2016 | |
https://doi.org/10.1051/epjconf/201613003010
Determination of the analysing power for the 
→ ppη reaction using the WASA-at-COSY detector system
Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University in Kraków, 30-348, Kraków, Poland
Published online: 29 November 2016
High statistics measurements of the analyzing power for the
→ ppη reaction were performed with the WASA-at-COSY detector at the Cooler Synchrotron COSY. The η meson was produced at two excess energies: Q = 15 MeV and Q = 72 MeV, and it was registered using the missing and invariant mass techniques. The determined analyzing power is consistent with zero for Q = 15 MeV implying the dominance of s wave and an insignificant contribution of the S d partial wave. However, at Q = 72 MeV the angular distribution of the analyzing power reveals a strong interference of Ps and Pp partial waves. Moreover, the available theoretical predictions for the angular dependence of the analyzing power strongly deviate from our experimental results.
© The Authors, published by EDP Sciences, 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.