| Autor: |
Andrea Formica, Sandro Palestini, Monica Pepe, Olaf Steinkamp, Guillaume Unal, Paolo Calafiura, Augusto Ceccucci, Alberto Gianoli, Roberta Arcidiacono, Roger Moore, Joerg Scheidt, Cinzia Talamonti, Patrizia Cenci |
| Jazyk: |
angličtina |
| Rok vydání: |
1997 |
| Předmět: |
|
| Popis: |
The rate of the decay of the neutral K meson into KL0 → 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+-0.21+0.24. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
