Original scientific paper

Quark off-shellness in K,B → γγ decays

Jan O. Eeg ; TH Division, CERN, CH-1211 Geneva 23, Switzerland
Ivica Picek ; Department of Physics, Faculty of Science, University of Zagreb, POB 162, HR-41000 Zagreb, Croatia

Abstract

We demonstrate the importance of the quark off-shellness on examples of the radiative pseudoscalar meson decays, characterized by the simplest hadronic matrix elements. We point out that roughly a quarter of the empirical KL → γγ amplitude originates in the quark off-shellness in kaon. For BS → γγ we also find non-negligible contributions that increase the decay rate by a factor of 1.5 to 3.

Keywords

Hrčak ID:

303451

URI

https://hrcak.srce.hr/303451

Publication date:

1.6.1994.

Article data in other languages: croatian

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