2018_EJRNL_PP_A__B__LARIONOV_1.pdf
Terbatas Ratnasari
» ITB
Terbatas Ratnasari
» ITB
We study the manifestation of the
++-
? component of the deuteron wave function in the exclusive reaction
p¯d ? ?
?
?
?
++. Due to the large binding energy the internal motion in the - system is relativistic. We
take this into account within the light-cone (LC) wave function formalism and, indeed, found large differences
between calculations based on the LC and nonrelativistic (NR) wave functions. We demonstrate that the
consistent LC treatment of the - system plays the key role in the separation of the signal and background.
Within the LC approach, the characteristic shape of the momentum distribution of the - bound system
predicted by the meson-exchange model is well visible on the background of usual annihilations at beam
momenta between 10 and 15 GeV/c.