Observation of multiple hard photon final states at root s=130-140 GeV at LEP

We have studied the process e+e- → ny (n ≥ 2) at an average center-of-mass energy of 133 GeV using the L3 detector at LEP. For an integrated luminosity of 4.95 pb-1 we find one γγγγ(γ) final state with only hard photons. The rates of both γγγ and γγ events are consistent with QED expectations. The c...

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Bibliographic Details
Main Authors:	Acciarri, M, Adam, A, Adriani, O, AguilarBenitez, M, Ahlen, S, Alpat, B, Alcaraz, J, Alemanni, G, Allaby, J, Aloisio, A, Alverson, G, Alviggi, MG, Ambrosi, G, Anderhub, H, Andreev, V, Angelescu, T, Antreasyan, D, Arefiev, A, Azemoon, T, Aziz, T, Bagnaia, P, Baksay, L, Ball, R, Banerjee, S, Banicz, K
Format:	Journal article
Published:	1996

Observation of multiple hard photon final states at root s=130-140 GeV at LEP

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