Production of e, μ and τ pairs in untagged two-photon collisions at LEP
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Zalite, P. Zemp, Y. Zeng,Z. Zhang,Z.P. Zhang,B. Zhou,Y. Zhou,G.Y. Zhu,R.Y. Zhu, A. Zichichi,F. Ziegler
PHYSICS LETTERS B（1997）
Cited 21|Views176
Abstract
The two-photon collision reaction e(+)e(-) --> e(+)e(-)l(+)l(-) has been studied at root s approximate to 91 GeV using the L3 detector at LEP for l = e, mu, tau. We have analysed untagged configurations where the two photons are quasi-real. Good agreement is found between our measurements and the O(alpha(4)) QED expectation. (C) 1997 Elsevier Science B.V.
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Key words
collisions,lep,two-photon
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