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A new determination of the $K^{0} \rightarrow \pi^{+} \pi^{-}$ decay parameters
In a short neutral beam the proper time-dependence of the decay K/sup 0/ to pi /sup +/ pi /sup -/ is measured. This time structure exhibits the interference between the short- and long-lived states and is in agreement with the general expectations of the CP violation phenomenology. This experiment g...
| Autores principales: | , , , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
1974
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/0370-2693(74)90385-2 http://cds.cern.ch/record/873714 |
| _version_ | 1780907716774985728 |
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| author | Geweniger, C Eisele, F Filthuth, Heinz Gjesdal, S Kleinknecht, K Lüth, V Presser, G Steffen, P Steinberger, J Vannucci, François Wahl, H Zech, G |
| author_facet | Geweniger, C Eisele, F Filthuth, Heinz Gjesdal, S Kleinknecht, K Lüth, V Presser, G Steffen, P Steinberger, J Vannucci, François Wahl, H Zech, G |
| author_sort | Geweniger, C |
| collection | CERN |
| description | In a short neutral beam the proper time-dependence of the decay K/sup 0/ to pi /sup +/ pi /sup -/ is measured. This time structure exhibits the interference between the short- and long-lived states and is in agreement with the general expectations of the CP violation phenomenology. This experiment gives new and more precise measurements of the following three parameters: (i) the decay width of the short- lived K/sub S/ component: Gamma /sub S/=(1.119+or-0.006)*10/sup 10/ sec/sup -1/; (ii) the modulus of the CP violating parameter eta /sub +-/: mod eta /sub +-/ mod =(2.3+or-0.035)*10/sup -3/; (iii) the phase of eta /sub +-/ as a function of the K/sub S/-K/sub L/ mass difference Delta m: phi /sub +-/=(49.4+or-1.0)/sup 0/+(( Delta m-0.540)/0.540) *305/sup 0/. (9 refs). |
| id | cern-873714 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 1974 |
| record_format | invenio |
| spelling | cern-8737142019-09-30T06:29:59Zdoi:10.1016/0370-2693(74)90385-2http://cds.cern.ch/record/873714engGeweniger, CEisele, FFilthuth, HeinzGjesdal, SKleinknecht, KLüth, VPresser, GSteffen, PSteinberger, JVannucci, FrançoisWahl, HZech, GA new determination of the $K^{0} \rightarrow \pi^{+} \pi^{-}$ decay parametersParticle Physics - PhenomenologyIn a short neutral beam the proper time-dependence of the decay K/sup 0/ to pi /sup +/ pi /sup -/ is measured. This time structure exhibits the interference between the short- and long-lived states and is in agreement with the general expectations of the CP violation phenomenology. This experiment gives new and more precise measurements of the following three parameters: (i) the decay width of the short- lived K/sub S/ component: Gamma /sub S/=(1.119+or-0.006)*10/sup 10/ sec/sup -1/; (ii) the modulus of the CP violating parameter eta /sub +-/: mod eta /sub +-/ mod =(2.3+or-0.035)*10/sup -3/; (iii) the phase of eta /sub +-/ as a function of the K/sub S/-K/sub L/ mass difference Delta m: phi /sub +-/=(49.4+or-1.0)/sup 0/+(( Delta m-0.540)/0.540) *305/sup 0/. (9 refs).oai:cds.cern.ch:8737141974 |
| spellingShingle | Particle Physics - Phenomenology Geweniger, C Eisele, F Filthuth, Heinz Gjesdal, S Kleinknecht, K Lüth, V Presser, G Steffen, P Steinberger, J Vannucci, François Wahl, H Zech, G A new determination of the $K^{0} \rightarrow \pi^{+} \pi^{-}$ decay parameters |
| title | A new determination of the $K^{0} \rightarrow \pi^{+} \pi^{-}$ decay parameters |
| title_full | A new determination of the $K^{0} \rightarrow \pi^{+} \pi^{-}$ decay parameters |
| title_fullStr | A new determination of the $K^{0} \rightarrow \pi^{+} \pi^{-}$ decay parameters |
| title_full_unstemmed | A new determination of the $K^{0} \rightarrow \pi^{+} \pi^{-}$ decay parameters |
| title_short | A new determination of the $K^{0} \rightarrow \pi^{+} \pi^{-}$ decay parameters |
| title_sort | new determination of the $k^{0} \rightarrow \pi^{+} \pi^{-}$ decay parameters |
| topic | Particle Physics - Phenomenology |
| url | https://dx.doi.org/10.1016/0370-2693(74)90385-2 http://cds.cern.ch/record/873714 |
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