Measurements of double-helicity asymmetries in inclusive $J/\psi$ production in longitudinally polarized $p+p$ collisions at $\sqrt{s}=510$ GeV

A. Adare, C. Aidala, N. N. Ajitanand +332

We report the double helicity asymmetry, $A_{LL}^{J/\psi }$, in inclusive $J/\psi$ production at forward rapidity as a function of transverse momentum $p_T$ and rapidity $|y|$. The data a…