slac-pub-2605 - SLAC - Stanford University

where
4 non-pert(xi) = I
-21-
[d2kl] $non-pert(i?,xi) . (2.16)
Assuming the wavefunction' given by Eqs. (2.7) and (2.9), the shape and
the normalization of $non-pert (xi> depends only upon the quark mass. The
application of perturbative QCD for [e~/y,(l-y,)] ) is reasonable here,
since w 0.7 GeV2 for this wavefunction is much larger than QCD A:,,.
An (approximate) connection between the equal-time wavefunction in the
center of mass frame and the infinite momentum frame wavefunction can be
established by equating the energy propagator M2 -
the two frames:
M2-& =
M2-
g 'yi) 2 2