Speaker
Description
The PiHe collaboration of the Paul Scherrer Institute (PSI) have carried out laser spectroscopy of long-lived three-body pionic helium atoms made of a $^4$He nucleus, an electron, and a negative pion. Sub-nanosecond laser pulses excited a transition between a pionic state of principal and orbital angular momentum quantum number combinations $(n,\ell)=(17,16)$$\rightarrow$$(17,15)$. This may lead to future studies of the properties of pions and other mesons using quantum optics techniques, as well as precision quantum electrodynamics (QED) studies of a boson-boson atomic system. This research is complementary to our experiments on metastable antiprotonic helium atoms carried out by the ASACUSA collaboration of CERN to study the properties of a fundamental hadron-antihadron atom.
[1] M. Hori, A. Sótér, V.I. Korobov, Phys. Rev. A 89, 042515 (2014).
[1] M. Hori, H. Aghai-Khozani, A. Sótér, A. Dax and D. Barna, Nature 581, 37 (2020).
Details
Masaki Hori
Max Planck Institute of Quantum Optics
| Is this abstract from experiment? | Yes |
|---|---|
| Name of experiment and experimental site | PiHe and ASACUSA |
| Is the speaker for that presentation defined? | Yes |
| Internet talk | Yes |
