2005/02/28 by Chao-Hsi Chang, Cong-Feng Qiao, Jian-Xiong Wang +1 · 1 citation
Physics and Astronomy · #hep-ph
paper · pdf · doi:10.1103/physrevd.71.074012
published as Phys.Rev.D71:074012,2005 · 14 pages, 4 figures (8 eps-files for figures), add references and correct typos
arxiv created 2005/03/13 · arxiv updated 2009/12/01
The contributions from the color-octet components |(c b)\bf 8(1S0) g> and |(c b)\bf 8(3S1) g> to the hBc or χBcJ (the P-wave Bc meson) hadroproduction are estimated in terms of the complete \cal O(αs4) calculation. As necessary inputs in the estimate, we take the values of the octet matrix elements according to the NRQCD scaling rules, and as a result, we have found that the contributions to the P-wave production may be the same in order of magnitude as those from the color-singlet ones, |(c b)\bf 1(1P1)> and |(c b)\bf 1(3PJ)> (J=1,2,3). Especially, our result indicates that the observation of the color-octet contributions to the P-wave production in the low transverse momentum region is not very far from the present experimental capability at Tevatron and LHC.