Parity determination for the new generation of heavy neutral mesons

Ngee-Pong Chang, C. A. Nelson
1979 Physical Review D, Particles and fields  
NOTKESTRASSE 85 2 HAMBURG 52 To he Sl.i're that your preprints ;trt~ promptly incfwJed m ttw lfiGif ENEHC;Y PHYSICS INDEX, s.end them to the following .1ddrcs·• ( if ptJssiblc by air mail ) We consider how best to experimentally determine the parity quantum number of a new heavy neutral meson, JPC. Multiquark and gluoriium states including the possibility of exotic can have exotic JPC quantum numbers forbidden to the non-relativistic qq system. If only the existence of easily identifiable
more » ... identifiable two-body hadronic modes is knotm, it is not possible to establish the parity so an "exotic" meson, J > 0, could be mis-identified as a "normal" meson. Direction-linear polarization coefficients, whic~ ----+ >r~uld identify the parity, are also found to be small for ee ._ I -I y , _+ -0 )"with the high energy photon externally converting into an ee pair. However, important parity tests do exist, independent of the polarization state of the decaying particle, which can be used to settle the confusion. These are listed in Part III of this paper. + Permanent address
doi:10.1103/physrevd.20.2923 fatcat:hv3kowokivbdnmoh5337cudaom