Measurement of the running of the fine-structure constant

L3 Collaboration

doi:10.1016/S0370-2693(00)00122-2

Scientific article

Open access

English

Measurement of the running of the fine-structure constant

ContributorsL3 Collaboration

CollaboratorsAchard, Pablo; Ambrosi, Giovanni; Bourquin, Maurice; Braccini, Saverio; Chamizo Llatas, Maria; Deglon, Patrick; Delmeire, Evelyne; Extermann, Pierre; Field, John; Kienzle, Maria-Novella; Muheim, Franz; Pohl, Martin; Produit, Nicolas; Sciarrino, Deborah

Published inPhysics letters. B, vol. 476, no. 1-2, p. 40-48

Publication date2000

Abstract

Small-angle Bhabha scattering data recorded at the Z resonance and large-angle Bhabha scattering data recorded at √s=189 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 α-1(-2.1 GeV2)-α-1(-6.25 GeV2)=0.78±0.26 ; α-1(-12.25 GeV2)-α-1(-3434 GeV2)=03.80±1.29 in agreement with theoretical predictions.

Affiliation

Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

Citation (ISO format)

L3 Collaboration. Measurement of the running of the fine-structure constant. In: Physics letters. B, 2000, vol. 476, n° 1-2, p. 40–48. doi: 10.1016/S0370-2693(00)00122-2

Article (Published version)

Identifiers

PID : unige:47332
DOI : 10.1016/S0370-2693(00)00122-2

Commercial URLhttp://www.sciencedirect.com/science/article/pii/S0370269300001222

ISSN of the journal0370-2693

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Measurement of the running of the fine-structure constant

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