Cross section for $b\bar{b}$ production via dielectrons in d$+$Au   collisions at $\sqrt{s_{_{NN}}}=200$ GeV
  We report a measurement of $e^+e^-$ pairs from semileptonic heavy-flavor decays in $d$$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV. Exploring the mass and transverse-momentum dependence of the yield, the bottom decay contribution can be isolated from charm, and quantified by comparison to {\sc pythia} and {\sc mc@nlo} simulations. The resulting $b\bar{b}$-production cross section is $\sigma^{d{\rm Au}}_{b\bar{b}}=1.37{\pm}0.28({\rm stat}){\pm}0.46({\rm syst})$~mb, which is equivalent to a nucleon-nucleon cross section of $\sigma^{NN}_{bb}=3.4\pm0.8({\rm stat}){\pm}1.1({\rm syst})\ \mu$b. 
A. Adare, C. Aidala, N.N. Ajitanand, Y. Akiba, H. Al-Bataineh, J.   Alexander, A. Angerami, K. Aoki, N. Apadula, Y. Aramaki,...
nucl-ex