Richter, Klaus and Rost, J. and Thürwächter, R. and Briggs, J. and Wintgen, Dieter and Solov'ev, E.
New State of Binding of Antiprotons in Atoms.
Physical Review Letters (PRL) 66 (2), pp. 149-152.
Other URL: http://link.aps.org/abstract/PRL/v66/p149
It is suggested that there exists a novel ''molecular'' state of binding of antiprotons to atoms in which an excited highly polarized electron is located between the nucleus and the antiproton. The lifetime of this state is expected to be decided by the radiative lifetime of the excited electronic state.