en
Scientific article
Open access
English

Double-tag events in two-photon collisions at LEP

ContributorsL3 Collaboration
Published inPhysics letters. B, vol. 531, no. 1-2, p. 39-51
Publication date2002
Abstract

Double-tag events in two-photon collisions are studied using the L3 detector at LEP centre-of-mass energies from QY*Y* GeV to 209 GeV. The cross sections of the e+e−→e+e−hadrons and QY*Y* processes are measured as a function of the product of the photon virtualities, QY*Y*, of the two-photon mass, Wγγ, and of the variable Y=ln(W2γγ/Q2). The average photon virtuality is 〈Q21〉=〈Q22〉=16 GeV2. The results are in agreement with next-to-leading order calculations for the process √s=189 in the interval 2⩽Y⩽5. An excess is observed in the interval 5

Citation (ISO format)
L3 Collaboration. Double-tag events in two-photon collisions at LEP. In: Physics letters. B, 2002, vol. 531, n° 1-2, p. 39–51. doi: 10.1016/S0370-2693(02)01340-0
Main files (1)
Article (Published version)
accessLevelPublic
Identifiers
ISSN of the journal0370-2693
501views
186downloads

Technical informations

Creation12/12/2014 2:03:00 PM
First validation12/12/2014 2:03:00 PM
Update time03/14/2023 10:26:01 PM
Status update03/14/2023 10:26:00 PM
Last indexation01/16/2024 3:08:52 PM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack