From the analysis of the reactions e+e- --> l+l- (ngamma) (l = e,mu, tau) we observe four events, one e+e-gammagamma and three mu +mu - gammagamma, with the invariant mass of the photon pairs close to 60 GeV. These events were selected from a data sample collected in the L3 detector corresponding to 950000 produced Z0's. More data are necessary to ascertain the origin of these events.

High Mass Photon Pairs In L+l-gamma-gamma Events At Lep / Adriani, O., Aguilarbenitez, M., Ahlen, S., Alcaraz, J., Aloisio, A., Alverson, G., Alviggi, M., Ambrosi, G., An, Q., Anderhub, H., Anderson, A.L., Andreev, V.P., Antonov, L., Antreasyan, D., Arce, P., Arefiev, A., Atamanchuk, A., Azemoon, T., Aziz, T., P. V. K., ., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 295:(1992), pp. 337-346. [10.1016/0370-2693(92)91576-U]

High Mass Photon Pairs In L+l-gamma-gamma Events At Lep

ALOISIO, ALBERTO;ALVIGGI, MARIAGRAZIA;CHIEFARI, GIOVANNI;L. LISTA;MEROLA, LEONARDO;NAPOLITANO, MARCO;PATRICELLI, SERGIO;SCIACCA, CRISOSTOMO;
1992

Abstract

From the analysis of the reactions e+e- --> l+l- (ngamma) (l = e,mu, tau) we observe four events, one e+e-gammagamma and three mu +mu - gammagamma, with the invariant mass of the photon pairs close to 60 GeV. These events were selected from a data sample collected in the L3 detector corresponding to 950000 produced Z0's. More data are necessary to ascertain the origin of these events.
1992
High Mass Photon Pairs In L+l-gamma-gamma Events At Lep / Adriani, O., Aguilarbenitez, M., Ahlen, S., Alcaraz, J., Aloisio, A., Alverson, G., Alviggi, M., Ambrosi, G., An, Q., Anderhub, H., Anderson, A.L., Andreev, V.P., Antonov, L., Antreasyan, D., Arce, P., Arefiev, A., Atamanchuk, A., Azemoon, T., Aziz, T., P. V. K., ., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 295:(1992), pp. 337-346. [10.1016/0370-2693(92)91576-U]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/481293
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