Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8185576 | Nuclear Physics B - Proceedings Supplements | 2013 | 4 Pages |
Abstract
We report a measurement of the exclusive Ï0 production in the process of e+eâ scattering in kinematic region where the Ï0 and the final-state electron or positron are detected (i.e., tagged). We use 759 fbâ1 data sample recorded with the Belle detector at the KEKB asymmetric-energy e+eâ collider to measure the γγââÏ0 transition form factor F(Q2) in the momentum transfer region 4 GeV2⩽Q2⩽40 GeV2. The reported values of Q2|F(Q2)| agree well with previous measurements at Q2⩽9 GeV2, are reasonably consistent with recent results reported by the BaBar experiment but do not support their hypothesis of the rapid increase of Q2|F(Q2)| at higher Q2 values.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Vladimir Savinov, Belle Collaboration Belle Collaboration,