Gluon-Spin Contribution to the Proton Spin from the Double-Helicity Asymmetry in Inclusive π 0 Production in Polarized p + p Collisions at s = 200 GeV
A. Adare, S. Afanasiev, C. Aidala, N. N. Ajitanand et autres
The double helicity asymmetry in neutral pion production for ${p}_{T}=1$ to $12\text{ }\text{ }\mathrm{GeV}/c$ was measured with the PHENIX experiment to access the gluon-spin contribution, $\ensuremath{\Delta}G$, to the proton spin. Measured asymmetries are consistent with zero, and at a theory scale of …
us, ru, jp, fr, hu, de, in, kr, tw, br, il, cz (code pays fourni par la source)
90 citations
Physical Review Letters