Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-05-19
Eur.Phys.J.C59:683-689, 2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
6 pages, 3 figures, 1 table. More references added. Typos corrected
Scientific paper
10.1140/epjc/s10052-008-0811-3
To testify the validity of the perturbative QCD (pQCD) and investigate its application range, one should look for a suitable process to do the job. $B\to J/\psi D$ is a promising candidate. The linear momentum of the products is relatively small, so that there may exist a region where exchanged gluons are soft and the perturbative treatment may fail, so that the non-perturbative effect would be significant. We attribute such non-perturbative QCD effects into the long-distance final state interaction (FSI) which is estimated in this work. We find that the contribution from the FSI to the branching ratio is indeed sizable and may span a rather wide range of $10^{-6}\sim 10^{-5}$, and cover a region where the pQCD prediction has the same order. A more accurate measurement on its branching ratio may provide important information about the application region of pQCD and help to clarify the picture of the inelastic rescattering (i.e. FSI) which is generally believed to play an important role in B decays.
Li Xue-Qian
Liu Xiang
Wei Zheng-Tao
No associations
LandOfFree
Contribution of final state interaction to the branching ratio of $B\to J/ψD$ 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 Contribution of final state interaction to the branching ratio of $B\to J/ψD$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Contribution of final state interaction to the branching ratio of $B\to J/ψD$ will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-647779