In order to enable an iCal export link, your account needs to have an API key created. This key enables other applications to access data from within Indico even when you are neither using nor logged into the Indico system yourself with the link provided. Once created, you can manage your key at any time by going to 'My Profile' and looking under the tab entitled 'HTTP API'. Further information about HTTP API keys can be found in the Indico documentation.
Additionally to having an API key associated with your account, exporting private event information requires the usage of a persistent signature. This enables API URLs which do not expire after a few minutes so while the setting is active, anyone in possession of the link provided can access the information. Due to this, it is extremely important that you keep these links private and for your use only. If you think someone else may have acquired access to a link using this key in the future, you must immediately create a new key pair on the 'My Profile' page under the 'HTTP API' and update the iCalendar links afterwards.
Permanent link for public information only:
Permanent link for all public and protected information:
Precision spectroscopy of pionic atoms to study pion-nucleus interaction in medium
An established approach for quantitative evaluation of the chiral symmetry breaking in finite density is study of pion-nucleus interaction through the experimental measurement of pionic atoms. Theories predict strength of isovector interaction between pion and nucleus, represented by a parameter b1, is enhanced by nuclear medium effects of the strong interaction, which is related to the partial restoration of the chiral symmetry breaking. So far the value of b1 at finite density was measured at GSI, Germany, through the spectroscopy of deeply-bound pionic atoms. From the comparison with the b1 in vacuum, the partial restoration of chiral symmetry breaking was suggested, while the precision of the obtained b1 is still not enough compared with that in vacuum.
For the further study of b1, we performed a precision measurement of deeply bound pionic states in 121, 116Sn using BigRIPS as a high-precision spectrometer. After the fine tuning of the experimental conditions, we achieved unprecedented resolution and measured high quality excitation spectra of 121, 116Sn near the charged pion emission threshold. In these spectra, the 1s, 2p and 2s pionic states in 121, 116Sn atoms are observed. From the obtained binding energies and widths, we evaluated optical potential parameters.
The detail of the experiment and its preliminary results will be presented.