Cargando…
Studies of e+e- -> Zgamma -> mu+ mu- gamma events at sqrt{s} = 189-208 GeV
Radiative returns to the Z peak decaying to muon pairs are selected at 189 to 208 GeV centre-of-mass energies, and event kinematic variables are analysed . The results are interpreted in terms of a possible bias of the Z mass peak position, or of a shift in the LEP centre-of-mass energy, yielding De...
| Autor principal: | |
|---|---|
| Lenguaje: | eng |
| Publicado: |
2003
|
| Materias: | |
| Acceso en línea: | http://cds.cern.ch/record/644914 |
| _version_ | 1780900817705893888 |
|---|---|
| author | CERN. Geneva |
| author_facet | CERN. Geneva |
| author_sort | CERN. Geneva |
| collection | CERN |
| description | Radiative returns to the Z peak decaying to muon pairs are selected at 189 to 208 GeV centre-of-mass energies, and event kinematic variables are analysed . The results are interpreted in terms of a possible bias of the Z mass peak position, or of a shift in the LEP centre-of-mass energy, yielding Delta mZ = +209 +- 79 MeV (stat.) +- 35 MeV (syst.) with 94% chi-square probability, Delta E(LEP) = -334 +- 182 MeV (stat.) +- 96 MeV (syst.) with 14% chi-square probability. |
| id | cern-644914 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2003 |
| record_format | invenio |
| spelling | cern-6449142022-01-27T08:58:19Zhttp://cds.cern.ch/record/644914engCERN. GenevaStudies of e+e- -> Zgamma -> mu+ mu- gamma events at sqrt{s} = 189-208 GeVXXRadiative returns to the Z peak decaying to muon pairs are selected at 189 to 208 GeV centre-of-mass energies, and event kinematic variables are analysed . The results are interpreted in terms of a possible bias of the Z mass peak position, or of a shift in the LEP centre-of-mass energy, yielding Delta mZ = +209 +- 79 MeV (stat.) +- 35 MeV (syst.) with 94% chi-square probability, Delta E(LEP) = -334 +- 182 MeV (stat.) +- 96 MeV (syst.) with 14% chi-square probability.CERN-ALEPH-2003-002CERN-ALEPH-CONF-2003-001oai:cds.cern.ch:6449142003-03-11 |
| spellingShingle | XX CERN. Geneva Studies of e+e- -> Zgamma -> mu+ mu- gamma events at sqrt{s} = 189-208 GeV |
| title | Studies of e+e- -> Zgamma -> mu+ mu- gamma events at sqrt{s} = 189-208 GeV |
| title_full | Studies of e+e- -> Zgamma -> mu+ mu- gamma events at sqrt{s} = 189-208 GeV |
| title_fullStr | Studies of e+e- -> Zgamma -> mu+ mu- gamma events at sqrt{s} = 189-208 GeV |
| title_full_unstemmed | Studies of e+e- -> Zgamma -> mu+ mu- gamma events at sqrt{s} = 189-208 GeV |
| title_short | Studies of e+e- -> Zgamma -> mu+ mu- gamma events at sqrt{s} = 189-208 GeV |
| title_sort | studies of e+e- -> zgamma -> mu+ mu- gamma events at sqrt{s} = 189-208 gev |
| topic | XX |
| url | http://cds.cern.ch/record/644914 |
| work_keys_str_mv | AT cerngeneva studiesofeezgammamumugammaeventsatsqrts189208gev |