Skip to main content
SpringerLink
Log in

Measurement of the decay rate and the parameter αK* of the decay KL → μμγ

  • Published:
Zeitschrift für Physik C Particles and Fields

Abstract

The rate of the decay of the neutral K meson into K 0L → μμγ has been measured with the NA48 detector at the CERN SPS. A total of 59 events has been observed with an estimated background of 14 events. The overall Kaon flux was determined to be 1.2 × 109. This observation corresponds to a branching ratio of (3.4 ± 0.6stat ± 0.4sys × 10-7. Using this branching ratio the parameter αK* describing the relative strength of the two contributing amplitudes to this decay, through intermediate pseudoscalar or vectorlike mesons, was measured to be αK* = -0.04+ +0.24-0.21 .

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

Author information

Authors and Affiliations

  1. Dipartimento di Fisica dell’Università e Sezione dell’INFN di Cagliari, I-09100, Cagliari, Italy

    V. Fanti, A. Lai, L. Musa, A. Nappi & M.G. Setzu

Authors
  1. V. Fanti
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. A. Lai
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. L. Musa
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. A. Nappi
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. M.G. Setzu
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Fanti, V., Lai, A., Musa, L. et al. Measurement of the decay rate and the parameter αK* of the decay KL → μμγ . Z Phys C - Particles and Fields 76, 653–657 (1997). https://doi.org/10.1007/s002880050587

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s002880050587

Keywords

Search

Navigation