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Measurement of the W mass at LEP2 from the WW cross-section
In 1996, the LEP e+ e- collider at CERN was operated for the first time above the kinematic threshold for the production of pairs of W bosons, at center-of-mass energies of 161 and 172 GeV. The W mass was determined from the measurement of the W pair cross-section at threshold, yielding Mw = 80.40:!...
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| Lenguaje: | eng |
| Publicado: |
1997
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| Acceso en línea: | http://cds.cern.ch/record/369607 |
| _version_ | 1780893050687455232 |
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| author | Valassi, Andrea |
| author_facet | Valassi, Andrea |
| author_sort | Valassi, Andrea |
| collection | CERN |
| description | In 1996, the LEP e+ e- collider at CERN was operated for the first time above the kinematic threshold for the production of pairs of W bosons, at center-of-mass energies of 161 and 172 GeV. The W mass was determined from the measurement of the W pair cross-section at threshold, yielding Mw = 80.40:!:g:�� GeV for the average of the four LEP experiments. The first direct measurement of W leptonic and hadronic branching ratios was also performed: in the assumption of lepton universality, a value of B(W -4 hadrons) = 67.0 ± 2.0% was obtained. |
| id | cern-369607 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 1997 |
| record_format | invenio |
| spelling | cern-3696072019-09-30T06:29:59Zhttp://cds.cern.ch/record/369607engValassi, AndreaMeasurement of the W mass at LEP2 from the WW cross-sectionParticle Physics - ExperimentIn 1996, the LEP e+ e- collider at CERN was operated for the first time above the kinematic threshold for the production of pairs of W bosons, at center-of-mass energies of 161 and 172 GeV. The W mass was determined from the measurement of the W pair cross-section at threshold, yielding Mw = 80.40:!:g:�� GeV for the average of the four LEP experiments. The first direct measurement of W leptonic and hadronic branching ratios was also performed: in the assumption of lepton universality, a value of B(W -4 hadrons) = 67.0 ± 2.0% was obtained.oai:cds.cern.ch:3696071997 |
| spellingShingle | Particle Physics - Experiment Valassi, Andrea Measurement of the W mass at LEP2 from the WW cross-section |
| title | Measurement of the W mass at LEP2 from the WW cross-section |
| title_full | Measurement of the W mass at LEP2 from the WW cross-section |
| title_fullStr | Measurement of the W mass at LEP2 from the WW cross-section |
| title_full_unstemmed | Measurement of the W mass at LEP2 from the WW cross-section |
| title_short | Measurement of the W mass at LEP2 from the WW cross-section |
| title_sort | measurement of the w mass at lep2 from the ww cross-section |
| topic | Particle Physics - Experiment |
| url | http://cds.cern.ch/record/369607 |
| work_keys_str_mv | AT valassiandrea measurementofthewmassatlep2fromthewwcrosssection |