  A helicity entangled tripartite state is considered in which the degree of
entanglement is preserved in non-inertial frames. It is shown that Quantum
Entanglement remains observer independent. As another measure of quantum
correlation, Quantum Discord has been investigated. It is explicitly shown that
acceleration has no effect on the degree of quantum correlation for the
bipartite and tripartite helicity entangled states. Geometric Quantum Discord
as a Hilbert-Schmidt distance is computed for helicity entangled states. It is
shown that living in non-inertial frames does not make any influence on this
distance, either. In addition, the analysis has been extended beyond single
mode approximation to show that acceleration does not have any impact on the
quantum features in the limit beyond the single mode. As an interesting result,
while the density matrix depends on the right and left Unruh modes, the
Negativity as a measure of Quantum Entanglement remains constant. Also, Quantum
Discord does not change beyond single mode approximation.
