Remarks on the amplitude of the decay Upsilon(3S) -> Upsilon(1S) pi pi

Details Remarks on the amplitude of the decay Upsilon(3S) -> Upsilon(1S) pi pi Remarks on the amplitude of the decay Upsilon(3S) -> Upsilon(1S) pi pi

2007-07-09

arxiv.org/abs/0707.1272v2

Phys.Rev.D76:094004,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages

Scientific paper

10.1103/PhysRevD.76.094004

We point out some properties of the amplitude of the dipion transition $\Upsilon(3S) \to \Upsilon(1S) \pi \pi$ in relation to the recently reported results of a CLEO analysis of form factors in this amplitude. We find that the reported significant complex phase between two of the form factors under the assumption that the third form factor is zero, is not consistent with the picture where the phase shifts arise due to the final state interaction in the $\pi \pi$ channel. It is also shown that in an analysis that uses no information on the polarization of both the initial and the final $\Upsilon$ resonances it is impossible in principle to determine all the relevant terms. We suggest that a study of a simple correlation between the direction of the total momentum of the two pions and the axis of the initial beams is sufficient to resolve the ambiguity in the fit for the form factors.

Affiliated with

Also associated with

No associations

Rating

Remarks on the amplitude of the decay Upsilon(3S) -> Upsilon(1S) pi pi 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 Remarks on the amplitude of the decay Upsilon(3S) -> Upsilon(1S) pi pi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Remarks on the amplitude of the decay Upsilon(3S) -> Upsilon(1S) pi pi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-159334