Search for narrow high-mass resonances in radiative decays of the Z<sup>0</sup>
We search for new resonances, Y, with mass M<sub>Y</sub>, in the range from 30 to 89 GeV, produced via the reaction e+e− → Z<sup>0</sup> →γY, where Y subsequently decays into e+e−, μ+μ− or hadrons. We use 5.5.pb<sup>−1</sup> of data collected in the energy range 8...
Guardado en:
Autores principales: | , |
---|---|
Formato: | Articulo |
Lenguaje: | Inglés |
Publicado: |
1991
|
Materias: | |
Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/81642 |
Aporte de: |
id |
I19-R120-10915-81642 |
---|---|
record_format |
dspace |
institution |
Universidad Nacional de La Plata |
institution_str |
I-19 |
repository_str |
R-120 |
collection |
SEDICI (UNLP) |
language |
Inglés |
topic |
Ciencias Exactas Física large electron positron collider Resonancia Higgs boson |
spellingShingle |
Ciencias Exactas Física large electron positron collider Resonancia Higgs boson Dova, María Teresa L3 Collaboration Search for narrow high-mass resonances in radiative decays of the Z<sup>0</sup> |
topic_facet |
Ciencias Exactas Física large electron positron collider Resonancia Higgs boson |
description |
We search for new resonances, Y, with mass M<sub>Y</sub>, in the range from 30 to 89 GeV, produced via the reaction e+e− → Z<sup>0</sup> →γY, where Y subsequently decays into e+e−, μ+μ− or hadrons. We use 5.5.pb<sup>−1</sup> of data collected in the energy range 88.2 ≤ √s ≤ 94.2 GeV, near the Z<sup>0</sup> peak. We obtain the following upper limits, at the 95% confidence level, on the product of the branching ratios: BR(Z<sup>0</sup> → γY) × BR(Y → e+e−) < 2.8 × 10<sup>−4</sup> for 30 < M<sub>Y</sub> < 89, BR(Z<sup>0</sup> →γY × BR(Y → μ+μ−) < 2.3 × 10<sup>−4</sup> for 30 < M<sub>Y</sub> < 89, BR(Z<sup>0</sup>→ γY) × BR(Y → hadrons) < 4.7 × 10<sup>−4</sup> for 30 < M<sub>Y</sub> < 86. These limits are valid for resonances with widths smaller than our mass resolution. |
format |
Articulo Articulo |
author |
Dova, María Teresa L3 Collaboration |
author_facet |
Dova, María Teresa L3 Collaboration |
author_sort |
Dova, María Teresa |
title |
Search for narrow high-mass resonances in radiative decays of the Z<sup>0</sup> |
title_short |
Search for narrow high-mass resonances in radiative decays of the Z<sup>0</sup> |
title_full |
Search for narrow high-mass resonances in radiative decays of the Z<sup>0</sup> |
title_fullStr |
Search for narrow high-mass resonances in radiative decays of the Z<sup>0</sup> |
title_full_unstemmed |
Search for narrow high-mass resonances in radiative decays of the Z<sup>0</sup> |
title_sort |
search for narrow high-mass resonances in radiative decays of the z<sup>0</sup> |
publishDate |
1991 |
url |
http://sedici.unlp.edu.ar/handle/10915/81642 |
work_keys_str_mv |
AT dovamariateresa searchfornarrowhighmassresonancesinradiativedecaysofthezsup0sup AT l3collaboration searchfornarrowhighmassresonancesinradiativedecaysofthezsup0sup |
bdutipo_str |
Repositorios |
_version_ |
1764820488284012545 |