An S matrix analysis of the Z resonance
- Autores
- Dova, María Teresa; L3 Collaboration
- Año de publicación
- 1993
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The S matrix ansatz is a rigorously model independent approach to describe the cross-sections and asymmetries in e+e- annihilation. Using the cross-sections and asymmetries measured with the L3 detector during the 1990 and 1991 running period, we determine the mass and the width of the Z boson, the contributions of the Z exchange and of the yZ interference. Including the polarization of the t lepton in the analysis, the leptonic helicity amplitudes of the scattering process are determined assuming lepton universality. The results are compared with other model independent ansatzes as realized in ZFITTER. A systematic bias of the Z mass due to the yZ interference term is detected, which leads to an underestimation of the error on mz for model independent determinations.
Facultad de Ciencias Exactas - Materia
-
Ciencias Exactas
Física
Z boson
S matrix - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/81607
Ver los metadatos del registro completo
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An S matrix analysis of the Z resonanceDova, María TeresaL3 CollaborationCiencias ExactasFísicaZ bosonS matrixThe S matrix ansatz is a rigorously model independent approach to describe the cross-sections and asymmetries in e+e- annihilation. Using the cross-sections and asymmetries measured with the L3 detector during the 1990 and 1991 running period, we determine the mass and the width of the Z boson, the contributions of the Z exchange and of the yZ interference. Including the polarization of the t lepton in the analysis, the leptonic helicity amplitudes of the scattering process are determined assuming lepton universality. The results are compared with other model independent ansatzes as realized in ZFITTER. A systematic bias of the Z mass due to the yZ interference term is detected, which leads to an underestimation of the error on m<sub>z</sub> for model independent determinations.Facultad de Ciencias Exactas1993-10-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf494-502http://sedici.unlp.edu.ar/handle/10915/81607enginfo:eu-repo/semantics/altIdentifier/issn/0370-2693info:eu-repo/semantics/altIdentifier/doi/10.1016/0370-2693(93)91646-5info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T16:56:01Zoai:sedici.unlp.edu.ar:10915/81607Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 16:56:01.896SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
An S matrix analysis of the Z resonance |
| title |
An S matrix analysis of the Z resonance |
| spellingShingle |
An S matrix analysis of the Z resonance Dova, María Teresa Ciencias Exactas Física Z boson S matrix |
| title_short |
An S matrix analysis of the Z resonance |
| title_full |
An S matrix analysis of the Z resonance |
| title_fullStr |
An S matrix analysis of the Z resonance |
| title_full_unstemmed |
An S matrix analysis of the Z resonance |
| title_sort |
An S matrix analysis of the Z resonance |
| dc.creator.none.fl_str_mv |
Dova, María Teresa L3 Collaboration |
| author |
Dova, María Teresa |
| author_facet |
Dova, María Teresa L3 Collaboration |
| author_role |
author |
| author2 |
L3 Collaboration |
| author2_role |
author |
| dc.subject.none.fl_str_mv |
Ciencias Exactas Física Z boson S matrix |
| topic |
Ciencias Exactas Física Z boson S matrix |
| dc.description.none.fl_txt_mv |
The S matrix ansatz is a rigorously model independent approach to describe the cross-sections and asymmetries in e+e- annihilation. Using the cross-sections and asymmetries measured with the L3 detector during the 1990 and 1991 running period, we determine the mass and the width of the Z boson, the contributions of the Z exchange and of the yZ interference. Including the polarization of the t lepton in the analysis, the leptonic helicity amplitudes of the scattering process are determined assuming lepton universality. The results are compared with other model independent ansatzes as realized in ZFITTER. A systematic bias of the Z mass due to the yZ interference term is detected, which leads to an underestimation of the error on m<sub>z</sub> for model independent determinations. Facultad de Ciencias Exactas |
| description |
The S matrix ansatz is a rigorously model independent approach to describe the cross-sections and asymmetries in e+e- annihilation. Using the cross-sections and asymmetries measured with the L3 detector during the 1990 and 1991 running period, we determine the mass and the width of the Z boson, the contributions of the Z exchange and of the yZ interference. Including the polarization of the t lepton in the analysis, the leptonic helicity amplitudes of the scattering process are determined assuming lepton universality. The results are compared with other model independent ansatzes as realized in ZFITTER. A systematic bias of the Z mass due to the yZ interference term is detected, which leads to an underestimation of the error on m<sub>z</sub> for model independent determinations. |
| publishDate |
1993 |
| dc.date.none.fl_str_mv |
1993-10-07 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/81607 |
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http://sedici.unlp.edu.ar/handle/10915/81607 |
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eng |
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eng |
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info:eu-repo/semantics/altIdentifier/issn/0370-2693 info:eu-repo/semantics/altIdentifier/doi/10.1016/0370-2693(93)91646-5 |
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openAccess |
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