Recent bottomonium measurement in pp, p–Pb and Pb-Pb collisions

Bottomonium measurement in the heavy ion collisions provide a useful tool to study both initial-state effects on heavy-quark production and final-state interactions between heavy quarks and the deconfined medium, quark-gluon plasma (QGP). At the LHC, bottomonium production has been measured in pp, p–Pb and Pb–Pb collisions at various centre-of-mass energy per nucleon. This manuscript reports the recent bottomonium measurements. The modification of J/ψ production at LHC energies with respect to the binary-scaled yield in pp collisions has been explained as an interplay of the suppression and the regeneration mechanisms commonly studied using the nuclear modification factor (RAA). For bottomonium states, RAA measurements have been reported by the LHC and RICH experiments. The results show significant suppression of Υ(1S) mesons in heavy ion collisions, while the Υ(2S) meson are even more suppressed