| Title: | CROSS SECTION MEASUREMENT OF μ PAIR PRODUCTION AT  IN γγ COLLISIONS AT LEP WITH L3 |
| DOI No: | 10.1142/9789812777157_0042 |
| Source: | PHOTON 2001 (pp 213-216)
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| Author(s): | GERGELY DEBRECZENI
Eötvös Lorán University, 1117 Budapest, Pázmány Péter Sétány 1/A, Hungary
on the behalf of the L3 Collaboration |
| Abstract: | The QED reaction e+e- → e+e-l+l- is a dominant channel at LEP2. It has been studied with the L3 detector for l = μ using an untagged data sample collected at  . The cross sections are measured as a function of the two-photon invariant mass for 3 ≤ Wγγ ≤ 40 GeV. Good agreement is found between these measurement and the O(α4) QED expectations. |
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