  Two recent experiments [I. P. Radu et al., Science 320, 899 (2008) and X. Lin
et al., Phys. Rev. B 85, 165321 (2012)] measured the temperature and voltage
dependence of the quasiparticle tunneling through a quantum point contact in
the \nu= 5/2 quantum Hall liquid. The results led to conflicting conclusions
about the nature of the quantum Hall state. In this paper, we show that the
conflict can be resolved by recognizing different geometries of the devices in
the experiments. We argue that in some of those geometries there is significant
unscreened electrostatic interaction between the segments of the quantum Hall
edge on the opposite sides of the point contact. Coulomb interaction affects
the tunneling current. We compare experimental results with theoretical
predictions for the Pfaffian, SU(2)_2, 331 and K=8 states and their
particle-hole conjugates. After Coulomb corrections are taken into account,
measurements in all geometries agree with the spin-polarized and
spin-unpolarized Halperin 331 states.
