Single spin asymmetries in forward p-p/A collisions revisited: the role of color entanglement

We calculate the single transverse spin asymmetries (SSA) for forward inclusive particle production in pp and pA collisions using a hybrid approach. It is shown that the Sivers type contribution to the SSA drops out due to the color entanglement effect, whereas the fragmentation contribution to the spin asymmetry is not affected by the color entanglement effect. This finding offers a natural solution for the sign mismatch problem.

Note:

5 pages, 2 figures

spin: asymmetry
spin: transverse
entanglement
color
Sivers function
fragmentation
hybrid
p p
hadron: production

References(64)

Figures(0)

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