Explanation for Y(4140) and X(3915)

Details Explanation for Y(4140) and X(3915) Explanation for Y(4140) and X(3915)

2011-03-28

arxiv.org/abs/1103.5363v4

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 5 figures. Major revision, including new experimental information and further insight into the reaction mechanism. Wi

Scientific paper

The Y(4140) observed by CDF appears to have a novel explanation. Its mass and width coincide within experimental error with a two-step process. In the first step, Y(4140) -> D_sbar + pi + D_s where the pion is virtual. A loop diagram involving this virtual pion allows Y(4140) de-excitation to J/psi + phi. Its predicted spin-parity is JPC = 1++. The same mechanism for Dbar-D^* configurations predicts a similar structure at 3911-3918 MeV, consistent with the peak at 3915 +- 3 MeV observed in omega J/psi by Babar and Belle. Relative branching ratios observed for B+ -> phi J/psi K+ and B+ -> omega J/psi K+ require that this mechanism accelerates decays of Y(4140) by a factor ~ 10^4 compared with isospin-violating decays via Y(4140) -> D_sbar + D^*_s. Similar processes are well known in molecular chemistry.

Affiliated with

Also associated with

No associations

Rating

Explanation for Y(4140) and X(3915) 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 Explanation for Y(4140) and X(3915), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Explanation for Y(4140) and X(3915) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-707553