Measurement of $\Upsilon(\mathrm{nS})$ production with $p$+Pb collisions at $\sqrt{s_{\rm NN}} = 5.02~\mathrm {TeV}$ and $pp$ collisions at $\sqrt{s} = 2.76~\mathrm {TeV}$

A measurement of $\Upsilon(\mathrm{nS})$ production in proton-lead collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02 \mathrm{~TeV}$ and proton-proton collisions at $\sqrt{s} = 2.76 \mathrm{~TeV}$ is presented. The measurement is based on data collected by the ATLAS detector in 2013, corresponding to integrated luminosity of $28.1~\mathrm{nb}^{-1}$ and $4.0~\mathrm{pb}^{-1}$ in $p$+Pb and $pp$, respectively. The measurements of $\Upsilon(\mathrm{nS})$ production cross section, nuclear modification factors, excited-to-ground state ratios and self-normalized ratios are presented for the di-muon decay channel differentially as a function of transverse momentum, center-of-mass rapidity and event centrality.