<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>J</mml:mi><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi></mml:mrow></mml:math>production at low transverse momentum in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>p</mml:mi><mml:mo>+</mml:mo><mml:mi>p</mml:mi></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>d</mml:mi></mml:math>+ Au collisions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msqrt><mml:msub><mml:mi>s</mml:mi><mml:mrow><mml:mi>N</mml:mi><mml:mi>N</mml:mi></mml:mrow></mml:msub></mml:msqrt><mml:mo>=</mml:mo><mml:mn>200</mml:mn></mml:mrow></mml:math>GeV

We report on the measurement of $J/\ensuremath{\psi}$ production in the dielectron channel at midrapidity $(|y|&lt;1)$ in $p+p$ and $d+\mathrm{Au}$ collisions at $\sqrt{{s}_{NN}}=200\phantom{\rule{4pt}{0ex}}\mathrm{GeV}$ from the STAR experiment at the Relativistic Heavy Ion Collider. The transverse momentum ${p}_{T}$ spectra in $p+p$ for ${p}_{T}&lt;4\phantom{\rule{4pt}{0ex}}\mathrm{GeV}/c$ and $d+\mathrm{Au}$ collisions for ${p}_{T}&lt;3\phantom{\rule{4pt}{0ex}}\mathrm{GeV}/c$ are presented. These measurements extend the STAR coverage for $J/\ensuremath{\psi}$ production in $p+p$ collisions to low ${p}_{T}$. The $\ensuremath{\langle}{p}_{T}^{2}\ensuremath{\rangle}$ from the measured $J/\ensuremath{\psi}$ invariant cross section in $p+p$ and $d+\mathrm{Au}$ collisions are evaluated and compared to similar measurements at other collision energies. The nuclear modification factor for $J/\ensuremath{\psi}$ is extracted as a function of ${p}_{T}$ and collision centrality in $d+\mathrm{Au}$ and compared to model calculations using the modified nuclear parton distribution function and a final-state $J/\ensuremath{\psi}$ nuclear absorption cross section.