Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-06-21
Phys.Rev.D83:114037,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
Published in PRD, 18 pages, 8 figures
Scientific paper
10.1103/PhysRevD.83.114037
$\chi_{cJ}$ (J=0,1,2) production associated with a charm quark pair in hadron collisions is calculated in the framework of nonrelativistic QCD at the Tevatron and LHC. It is found that the color-singlet contribution is small and the color-octet contribution may be dominant in the large $p_T$ region. The differential cross section of $p\bar p\to\chi_c+c\bar{c}$ is at least one order of magnitude smaller than the next-to-leading order result of $\chi_{cJ}$ inclusive production $p\bar p\to\chi_c+X$, therefore $\chi_{cJ}$ production in $p\bar p\to\chi_c+c\bar{c}$ may have negligible influence on the ratio $R_{\chi_c}=\frac{\sigma_{\chi_{c2}}}{\sigma_{\chi_{c1}}}$ measured by CDF at the Tevatron. The feeddown contribution from $\chi_{cJ}+c+\bar{c}$ to $J/\psi+c+\bar{c}$ is found to be large compared with $J/\psi$ direct production and may have important influence on the measurement of $J/\psi+c+\bar{c}$. The validity of fragmentation approximation for the process is also discussed.
Chao Kuang-Ta
Li Dan
Ma Yan-Qing
No associations
LandOfFree
$χ_{cJ}$ production associated with a $c\bar c$ pair at hadron colliders does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with $χ_{cJ}$ production associated with a $c\bar c$ pair at hadron colliders, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and $χ_{cJ}$ production associated with a $c\bar c$ pair at hadron colliders will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-179425