Long vs. short distance dispersive two-photon K_L->µ^+ µ^- amplitude

Eeg, Jan O. and Kumerički, Krešimir and Picek, Ivica (1999) Long vs. short distance dispersive two-photon K_L->µ^+ µ^- amplitude. Fizika B, 8 (2). pp. 395-400. ISSN 1330-0016

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Abstract

We report on the calculation of the two-loop electroweak, two-photon mediated short-distance dispersive K_L->µ^+ µ^- decay amplitude. QCD corrections change the sign of this contribution and reduce it by an order of magnitude. The resulting amplitude enables us to provide a constraint on the otherwise uncertain long-distance dispersive amplitude.

Item Type: Article
Date: 1999
Subjects: NATURAL SCIENCES > Physics
Divisions: Faculty of Science > Department of Physics
Publisher: Hrvatsko fizikalno društvo
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 14 Mar 2014 18:43
Last Modified: 14 Mar 2014 18:43
URI: http://digre.pmf.unizg.hr/id/eprint/599

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