  The slowest reaction in the CNO cycle 14N(p, gamma)15O has been studied by
populating the E^lab_p =278 keV (E^r_c.m.=259 keV) proton capture resonant
state of ^{15}O at 7556 keV. The strength of the resonance has been determined
from the experimental data. The level lifetime of the sub-threshold resonant
state at Ex=6792 keV, as well as the lifetimes of the 5181 keV and 6172 keV
states, have been measured using the Doppler shift attenuation method (DSAM).
The structural properties of the nucleus ^{15}O, such as, the level energies,
transition strengths, level lifetimes, and spectroscopic factors, have been
calculated theoretically by using the large basis shell model, which agrees
reasonably well with the present as well as the previous experimental data.
