A data sample corresponding to almost two million hadronic Z decays collected by the ALEPH detector at LEP has been searched for monojet events. Three events were found, in agreement with the expectation from the process e+e- → γ*vv, with γ*→fp. Two events are hadronic, the third one being an e+e- pair. All monojet masses are in excess of 3 GeV/c2, and two of the event have large transverse momenta: 18.5 and 20.3 GeV/c. These kinematic characteristics are quite unlikely in the process e+e-→γ*νν. The probability of their occurence increases substantially when processes involving further Z or W exchanges are taken into account, but still remains at the 5% level.

Buskulic, D., Casper, D., Debonis, I., Decamp, D., Ghez, P., Goy, C., et al. (1994). Observation of monojet events and tentative interpretation. PHYSICS LETTERS. SECTION B, 334(1-2), 244-252 [10.1016/0370-2693(94)90619-X].

Observation of monojet events and tentative interpretation

CARPINELLI, Massimo;
1994

Abstract

A data sample corresponding to almost two million hadronic Z decays collected by the ALEPH detector at LEP has been searched for monojet events. Three events were found, in agreement with the expectation from the process e+e- → γ*vv, with γ*→fp. Two events are hadronic, the third one being an e+e- pair. All monojet masses are in excess of 3 GeV/c2, and two of the event have large transverse momenta: 18.5 and 20.3 GeV/c. These kinematic characteristics are quite unlikely in the process e+e-→γ*νν. The probability of their occurence increases substantially when processes involving further Z or W exchanges are taken into account, but still remains at the 5% level.
Articolo in rivista - Articolo scientifico
Physics
English
244
252
9
Buskulic, D., Casper, D., Debonis, I., Decamp, D., Ghez, P., Goy, C., et al. (1994). Observation of monojet events and tentative interpretation. PHYSICS LETTERS. SECTION B, 334(1-2), 244-252 [10.1016/0370-2693(94)90619-X].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/390392
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