We report spectra for transverse momenta at mid-rapidity in and Au + Au collisions at . The inclusive spectrum and the extracted B-hadron feed-down are compared to models incorporating different production mechanisms. We observe significant suppression of the yields for in 0–30% central Au + Au collisions relative to the yield scaled by the number of binary nucleon–nucleon collisions in Au + Au collisions. In 30–60% mid-central collisions, no such suppression is observed. The level of suppression is consistently less than that of high- and low- at RHIC and high- at the LHC.