Intrinsic c, b Quark Contribution For and Production

1. International Conference on QCD and Hadronic Physics June 16, 2005, Peking University, Beijing, China Intrinsic c, b Quark Contribution For and Production Jian-Xiong Wang Institute of High Energy Physics, Academia Sinica This work is incorporated with C. H. Chang, C. F. Qiao, X. G. Wu • Motivation • The results for • The results for (ccq) • The results for (bcq) • The Estimation for Sellex Experiment • Conclusion

3. The Problem for the universal NRQCD matrix elements CDF Collaboration, F.~Abe {\it et al.} PRL. 69, 3704 (1992);79, 572 (1997); 79, 578 (1997); BABAR Collaboration, B.~Aubert et al., PRL. 87, 162002 (2001). BELLE Collaboration, K.~Abe et al., PRL 88, 052001 (2002).

8. FDC-NRQCD Hevay Quark Meson: J/psi, B_c, ...... S-wave, P-wave Color-singlet, Color Octet NRQCD Formulation Fwuvy Theorem Color Factor Gauge Invariant Check

12. 2. The Results for Production P_t distribution on LHC With cut |y|<0.5 No cut

13. P_t Distribution on Tevatron With cut |y|<0.5 No cut

14. 3. The Results for Production P_t distribution on LHC No cut With cut |y|<0.5

15. P_t distribution on Tevatron With cut |y|<0.5 No cut

16. 4. The Results for Production P_t distribution on LHC With cut |y|<0.5 No cut

17. P_t distribution on Tevatron With cut |y|<0.5 No cut

18. 5. The Estimation for Sellex Experiment

20. Conclusion • The Intrinsic heavy quark c and b contribute • a larger part to and • The Intrinsic c and b quark make large contribution • (about 100 times than gluon fusion process) • to the production at Sellex experiment

21. P_t Distribution at LHC No cut With cut |y|<0.5

22. P_t Distribution at Tevatron With cut |y|<0.5 No cut