NRQCD Analysis of Bottomonium Production at the Tevatron

Recent data from the CDF collaboration on the production of spin-triplet bottomonium states at the Tevatron pp̄ collider are analyzed within the NRQCD factorization formalism. The color-singlet matrix elements are determined from electromagnetic decays and from potential models. The color-octet matrix elements are determined by fitting the CDF data on the cross sections for Υ(1S), Υ(2S), and Υ(3S) at large pT and the fractions of Υ(1S) coming from χb(1P ) and χb(2P ). We use the resulting matrix elements to predict the cross sections at the Tevatron for the spin-singlet states ηb(nS) and hb(nP ). We argue that ηb(1S) should be observable in Run II through the decay ηb → J/ψ + J/ψ. Typeset using REVTEX