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Longitudinal double-spin asymmetries for dijet production at intermediate pseudorapidity in polarized <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi><mml:mi>p</mml:mi></mml:math> collisions at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>200</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>GeV</mml:mi></mml:math>
We present the first measurements of the longitudinal double-spin asymmetry ${A}_{LL}$ for dijets with at least one jet reconstructed within the pseudorapidity range $0.8<\ensuremath{\eta}<1.8$. The dijets were measured in polarized $pp$ collisions at a center-of-mass energy $\sqrt{s}=200\text{ }\text{ }\mathrm{GeV}$. Values for ${A}_{LL}$ are determined for several distinct event topologies, defined …