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Lepton universality test with K+ --> l+ nu decays
The NA62 experiment at CERN collected a large sample of $K^+\to e^+\nu$ decays during a dedicated run in 2007, which allows a precise test of lepton universality by measurement of the helicity suppressed ratio $R_K = \Gamma(K^+\to e^+\nu)/\Gamma(K^+\to\mu^+\nu)$. The preliminary result of the analys...
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| Lenguaje: | eng |
| Publicado: |
2009
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| Acceso en línea: | https://dx.doi.org/10.22323/1.083.0025 http://cds.cern.ch/record/1203174 |
| _version_ | 1780917796176134144 |
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| author | Goudzovski, Evgueni |
| author_facet | Goudzovski, Evgueni |
| author_sort | Goudzovski, Evgueni |
| collection | CERN |
| description | The NA62 experiment at CERN collected a large sample of $K^+\to e^+\nu$ decays during a dedicated run in 2007, which allows a precise test of lepton universality by measurement of the helicity suppressed ratio $R_K = \Gamma(K^+\to e^+\nu)/\Gamma(K^+\to\mu^+\nu)$. The preliminary result of the analysis of a partial data sample of 51089 $K^+\to e^+\nu$ candidates is $R_K=(2.500\pm0.016)\times10^{-5}$, consistent with the Standard Model expectation. |
| id | cern-1203174 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2009 |
| record_format | invenio |
| spelling | cern-12031742019-09-30T06:29:59Zdoi:10.22323/1.083.0025http://cds.cern.ch/record/1203174engGoudzovski, EvgueniLepton universality test with K+ --> l+ nu decaysParticle Physics - ExperimentThe NA62 experiment at CERN collected a large sample of $K^+\to e^+\nu$ decays during a dedicated run in 2007, which allows a precise test of lepton universality by measurement of the helicity suppressed ratio $R_K = \Gamma(K^+\to e^+\nu)/\Gamma(K^+\to\mu^+\nu)$. The preliminary result of the analysis of a partial data sample of 51089 $K^+\to e^+\nu$ candidates is $R_K=(2.500\pm0.016)\times10^{-5}$, consistent with the Standard Model expectation.arXiv:0908.3858oai:cds.cern.ch:12031742009-08-27 |
| spellingShingle | Particle Physics - Experiment Goudzovski, Evgueni Lepton universality test with K+ --> l+ nu decays |
| title | Lepton universality test with K+ --> l+ nu decays |
| title_full | Lepton universality test with K+ --> l+ nu decays |
| title_fullStr | Lepton universality test with K+ --> l+ nu decays |
| title_full_unstemmed | Lepton universality test with K+ --> l+ nu decays |
| title_short | Lepton universality test with K+ --> l+ nu decays |
| title_sort | lepton universality test with k+ --> l+ nu decays |
| topic | Particle Physics - Experiment |
| url | https://dx.doi.org/10.22323/1.083.0025 http://cds.cern.ch/record/1203174 |
| work_keys_str_mv | AT goudzovskievgueni leptonuniversalitytestwithklnudecays |