Measurement of the running of the fine-structure constant

Small-angle Bhabha scattering data recorded at the Z resonance and large-angle Bhabha scattering data recorded at 's s189 GeV by the L3 detector at LEP are used to measure the running of the effective fine-structure constant for spacelike momentum transfers. The results are <math><...

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Detalles Bibliográficos
Autores principales: Dova, María Teresa, L3 Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2000
Materias:
Ciencias Exactas
Física
fine-structure
Bhabha scattering data
LEP
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/75551
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-75551
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
fine-structure
Bhabha scattering data
LEP
spellingShingle Ciencias Exactas
Física
fine-structure
Bhabha scattering data
LEP
Dova, María Teresa
L3 Collaboration
Measurement of the running of the fine-structure constant
topic_facet Ciencias Exactas
Física
fine-structure
Bhabha scattering data
LEP
description Small-angle Bhabha scattering data recorded at the Z resonance and large-angle Bhabha scattering data recorded at 's s189 GeV by the L3 detector at LEP are used to measure the running of the effective fine-structure constant for spacelike momentum transfers. The results are <math><mtext>α</mtext><msup><mi></mi><mn>−1</mn></msup><mtext>(−2.1</mtext><mspace sp="0.4" width="2px" linebreak="nobreak" is="true"></mspace><mtext>GeV</mtext><msup><mi></mi><mn>2</mn></msup><mtext>)−α</mtext><msup><mi></mi><mn>−1</mn></msup><mtext>(−6.25</mtext><mspace sp="0.4" width="2px" linebreak="nobreak" is="true"></mspace><mtext>GeV</mtext><msup><mi></mi><mn>2</mn></msup><mtext>)=0.78±0.26</mtext></math> <math><mtext>α</mtext><msup><mi></mi><mn>−1</mn></msup><mtext>(−12.25</mtext><mspace sp="0.4" width="2px" linebreak="nobreak" is="true"></mspace><mtext>GeV</mtext><msup><mi></mi><mn>2</mn></msup><mtext>)−α</mtext><msup><mi></mi><mn>−1</mn></msup><mtext>(−3434</mtext><mspace sp="0.4" width="2px" linebreak="nobreak" is="true"></mspace><mtext>GeV</mtext><msup><mi></mi><mn>2</mn></msup><mtext>)=3.80±1.29,</mtext></math> in agreement with theoretical predictions.
format Articulo
Articulo
author Dova, María Teresa
L3 Collaboration
author_facet Dova, María Teresa
L3 Collaboration
author_sort Dova, María Teresa
title Measurement of the running of the fine-structure constant
title_short Measurement of the running of the fine-structure constant
title_full Measurement of the running of the fine-structure constant
title_fullStr Measurement of the running of the fine-structure constant
title_full_unstemmed Measurement of the running of the fine-structure constant
title_sort measurement of the running of the fine-structure constant
publishDate 2000
url http://sedici.unlp.edu.ar/handle/10915/75551
work_keys_str_mv AT dovamariateresa measurementoftherunningofthefinestructureconstant
AT l3collaboration measurementoftherunningofthefinestructureconstant
bdutipo_str Repositorios
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