Production of e, μ and τ pairs in untagged two-photon collisions at LEP

M. Acciarri, O. Adriani, M. Aguilar-Benitez, S. Ahlen, J. Alcaraz, G. Alemanni, J. Allaby, A. Aloisio, G. Alverson, M. G. Alviggi, G. Ambrosi, H. Anderhub, V. P. Andreev, T. Angelescu, F. Anselmo, A. Arefiev, T. Azemoon, T. Aziz, P. Bagnaia, L. BaksayR. C. Ball, S. Banerjee, Sw Banerjee, K. Banicz, A. Barczyk, R. Barillère, L. Barone, P. Bartalini, A. Baschirotto, M. Basile, R. Battiston, A. Bay, F. Becattini, U. Becker, F. Behner, J. Berdugo, P. Berges, B. Bertucci, B. L. Betev, S. Bhattacharya, M. Biasini, A. Biland, G. M. Bilei, J. J. Blaising, S. C. Blyth, G. J. Bobbink, R. Bock, A. Böhm, L. Boldizsar, B. Borgia, A. Boucham, D. Bourilkov, M. Bourquin, D. Boutigny, S. Braccini, J. G. Branson, V. Brigljevic, I. C. Brock, A. Buffini, A. Buijs, J. D. Burger, W. J. Burger, J. Busenitz, X. D. Cai, M. Campanelli, M. Capell, G. Cara Romeo, G. Carlino, A. M. Cartacci, J. Casaus, G. Castellini, F. Cavallari, N. Cavallo, C. Cecchi, M. Cerrada, F. Cesaroni, M. Chamizo, Y. H. Chang, U. K. Chaturvedi, S. V. Chekanov, M. Chemarin, A. Chen, G. Chen, G. M. Chen, H. F. Chen, H. S. Chen, M. Chen, G. Chiefari, C. Y. Chien, L. Cifarelli, F. Cindolo, C. Civinini, I. Clare, R. Clare, H. O. Cohn, G. Coignet, A. P. Colijn, N. Colino, V. Commichau

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Abstract

The two-photon collision reaction e+e- → e+e-l+l- has been studied at √s ≈ 91 GeV using the L3 detector at LEP for l = e, μ, τ. We have analysed untagged configurations where the two photons are quasi-real. Good agreement is found between our measurements and the script O sign(α4) QED expectation.

Original languageEnglish
Pages (from-to)341-350
Number of pages10
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume407
Issue number3-4
DOIs
Publication statusPublished - Sep 4 1997

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Acciarri, M., Adriani, O., Aguilar-Benitez, M., Ahlen, S., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, A., Alverson, G., Alviggi, M. G., Ambrosi, G., Anderhub, H., Andreev, V. P., Angelescu, T., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., ... Commichau, V. (1997). Production of e, μ and τ pairs in untagged two-photon collisions at LEP. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 407(3-4), 341-350. https://doi.org/10.1016/S0370-2693(97)00731-4