Abstract
We have observed highly virtual ( Q 2 > 1.05 GeV 2) photon-photon collisions to hadronic final states at S e+e−= 58 GeV . The integrated luminosity of the data sample was 241 pb −1. Both scattered beam-electrons and scattered beam-positrons were detected using low-angle calorimeters (i.e., both photons were highly virtual, “ouble-tag”); we obtained 115 hadronic events with an estimated background of 10.2 ± 1.1. The cross section obtained was 4.11 ± 0.66 pb in the 2 < W γγ < 25 GeV and Q γ,min 2 >2 GeV region, while the lowest order quark-parton model predicted 3.00 pb.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
