SCOAP3 Repository 3 records found  Search took 0.24 seconds. 
1. First Measurement of a Long-Lived π+π Atom Lifetime / Adeva, B. ; Afanasyev, L. ; Anania, A. ; Aogaki, S. ; et al
The adapted DIRAC experiment at the CERN PS accelerator observed for the first time long-lived hydrogenlike π+π atoms, produced by protons hitting a beryllium target. [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.082003 arXiv:1811.08659
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2. First observation of long-lived π + π − atoms / Adeva, B. ; Afanasyev, L. ; Anania, A. ; Aogaki, S. ; et al
After observing and investigating the double-exotic (a double-exotic atom is a bound system, in which both oppositely charged components are unstable particles like μ,π,K,… ) π+π− atom with the ground state lifetime τ of about 3×10−15 s , the upgraded DIRAC experiment at the CERN PS accelerator observes for the first time long-lived states of the same atom with lifetimes of about 10−11 s and more. [...]
Published in Physics letters B (2015) 10.1016/j.physletb.2015.09.060
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3. First πK atom lifetime and πK scattering length measurements / Adeva, B. ; Afanasyev, L. ; Allkofer, Y. ; Amsler, C. ; et al
The results of a search for hydrogen-like atoms consisting of π∓K± mesons are presented. [...]
Published in Physics letters B 735 (2014) 288-294 10.1016/j.physletb.2014.06.043
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