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K+K- and KsKs Production in Two-Photon Collisions at Belle

Hsuan-Cheng Huang
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Abstract

The production of a kaon pair ($K^+ K^-$ and $K^0_S K^0_S$) in two-photon processes has been measured using the Belle detector at the electron-positron collider KEKB. We have obtained the invariant-mass distribution of the processes between 1.3 and 2.3 GeV. A broad bump structure around 1.7 GeV in the $K^0_S K^0_S$ channel is confirmed, while, in the $K^+ K^-$ channel, a bump structure is seen near 1.9 GeV. The angular distribution of the final-state kaons is analyzed to explore the spin(-helicity) structure in each invariant-mass region for the two processes. Contributions from existing and postulated resonances are discussed.

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Hsuan-Cheng Huang. 2001-04-13. K+K- and KsKs Production in Two-Photon Collisions at Belle. https://doi.org/10.1142/9789812811219_0078

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