Cross Section Measurement of μ Pair Production at √ {S} = 161 - 208\ GEV in γγ Collisions at Lep with L3

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 161 <= √ {s} <= 208\ GeV. The cross sections are measured as a function of the two-photon invariant mass for 3 ≤ W_γγ ≤ 40 GeV. Good agreement is found between these measurement and the O(α⁴) QED expectations.