1. chinaXiv:201609.01043 [pdf]

Measurements of $\pi^0\pi^0$ production and form factors for $f_0(980)$ and $f_2(1270)$ in single-tag two-photon process

Belle Collaboration
Subjects: Physics >> Nuclear Physics

We report a measurement of differential cross section of?π0?pair production in single-tag two-photon collisions. These results are obtained with 759fb?1?of the data collected with the Belle detector at the KEKB asymmetric energy?e+e?collider. The cross section is measured for?Q2?up to 30 GeV2, where?Q2?is the negative of the invariant mass squared of the tagged virtual photon, in the kinematic range 0.5 GeV

submitted time 2016-09-14 Hits1088， Downloads635， Comment 0