Journal article icon

Journal article

PRECISION TEST OF QED BY DIRECT COMPARISON OF E+E--]GAMMA-GAMMA AND E+E-]E+E-AT 29 GEV

Abstract:
The ratio of differential cross sections for the reactions e+e- → γγ and e+e- → e+e- is measured at s = 29 GeV in the central polar angle region, |cos θ| < 0.55, and compared to the same ratio calculated by QED to order α3. The ratio of these ratios, integrated over this angular region, is 1.007±0.009±0.008, demonstrating excellent agreement between theory and experiment. The 95% confidence limits on the QED cut-off parameters for the γγ final state are Λ+ > 59 GeV and Λ- > 59 GeV. © 1986.
Publication status:
Published

Actions


Access Document


Authors


Expand authors...
Journal:
PHYSICS LETTERS B
Volume:
166
Issue:
4
Pages:
468-472
Publication date:
1986-01-23
DOI:
ISSN:
0370-2693
URN:
uuid:be61abf5-abcd-48d4-b73c-752dcb2f9eeb
Source identifiers:
20947
Local pid:
pubs:20947
Language:
English

Terms of use


Metrics


Views and Downloads






If you are the owner of this record, you can report an update to it here: Report update to this record

TO TOP