Pair Production of Heavy Quarkonium and $B_c(^*)$ Mesons at Hadron Colliders

Rong Li; Yu-Jie Zhang; K. Chao

Paper

Pair Production of Heavy Quarkonium and $B_c(^*)$ Mesons at Hadron Colliders

Abstract

We investigate the pair production of S-wave heavy quarkonium at the LHC in the color-singlet mechanism (CSM) and estimate the contribution from the gluon fragmentation process in the color-octet mechanism (COM) for comparison. With the matrix elements extracted previously in the leading order calculations, the numerical results show that the production rates are quite large for the pair production processes at the LHC. The

distribution of double

production in the CSM is dominant over that in the COM when

is smaller than about 8GeV. For the production of double

, the contribution of the COM is always larger than that in the CSM. The large differences in the theoretical predictions between the CSM and COM for the

distributions in the large

region are useful in clarifying the effects of COM on the quarkonium production. We also investigate the pair production of S-wave

and

mesons, and the measurement of these processes is useful to test the CSM and extract the LDMEs for the

and

mesons.