学术报告：Matter-Antimatter Molecules
题目： Matter-Antimatter Molecules报告人: Prof. Cheuk-Yin Wong [Oak Ridge National Laboratory]
时间： 2011年10月14日 上午10：00－11：00
地点： 学术活动中心302房间
The study of matter-antimatter molecules has a long history, starting
with the pioneering work of John A. Wheeler in 1946. Molecular states
appears not only in atomic and molecular physics, but also in
sub-atomic physics such as the X(3872) state as a heavy-quark meson
molecule [1]. Because a large number of particles and antiparticles
are produced in high-energy heavy-ion collisions and in (e+)-(e-)
annihilations, we examine further the stability of matter-antimatter
molecules with constituents (m1+, m2-, m2bar+, m1bar-) under their
mutual electromagnetic interactions [2]. We find that
matter-antimatter molecules possess bound states if their constituent
mass ratio m1/m2 is greater than about 4. This stability condition
suggests that the binding of matter-antimatter molecules is a rather
common phenomenon.
[1] Cheuk-Yin Wong, Phys. Rev. C69, 055202 (2004)
[2] Cheuk-Yin Wong and Teck-Ghee Lee, Annals of Physics,326 2138 (2011),
Brief Biographical Sketch: Cheuk-Yin Wong
-----------------------------------------
Cheuk-Yin Wong was born in China, grew up in Hong Kong, and studied at
Princeton University, where he received his Bachelor, Master and
Ph.D. degrees in physics under Prof. John Wheeler. He has been
working at Oak Ridge National Laboratory since leaving Princeton, with
sabatical leaves at Niels Bohr Institute, M.I.T., and the University
of Tokyo. He was a former Chairman of the Overseas Chinese Physics
Association and the author of "Introduction to High Energy heavy-Ion
Collisions".
相关附件