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:
Study of charge symmetry breaking in A=4 hypernuclear system
201 (RIBF Hall)
=Date and Place=
Feb. 7th(Tue.), 13:30~ at RIBF Hall(room 201)
Study of charge symmetry breaking in A=4 hypernuclear system via the gamma-ray spectroscopy experiment at J-PARC
The charge symmetry breaking (CSB) effect reported in the A=4 mirror hypernuclei (4ΛH and 4ΛHe) is one of the hot topics in strangeness nuclear physics. Unexpectedly large CSB effect reported in old experiments was long standing puzzle and may become key to understand ΛN interaction. High accuracy data, with modern experimental technique, was long time awaited to confirm existence of CSB effect. Precise gamma-ray spectroscopy with an energy resolution of a few keV is a powerful tool to investigate such an effect. In fact, a gamma-ray spectroscopy study of 4ΛHe was performed at the J-PARC K1.8 beam line (J-PARC E13, 2015) for this purpose. 4ΛHe hypernuclei were produced by the direct 4He(K−, π−)4ΛHe reaction with a high intensity kaon beam. Gamma rays were measured with a newly developed Ge detector array, Hyperball-J. The excitation energy of ﬁrst excited state of 4ΛHe(1+) was successfully determined to be 1.406±0.004 MeV. By comparing to that of the mirror hypernucleus (4ΛH) from previous old studies, we confirmed the existence of CSB eﬀect and its spin dependence. Our next step is a more precise and conclusive measurement of the excitation energy of 4ΛH(1+) to experimentally establish the A=4 mirror hypernuclei system. We are planning gamma-ray spectroscopy of 4ΛH at the J-PARC K1.1 beam line (J-PARC E63) via the 7Li(K−, π−) reaction. The results of the gamma-ray spectroscopy of 4Λ He and an outline of the future experiment will be given.