The four-jet final state is analyzed to search for hadronic decays of pair-produced heavy particles. The analysis uses the ALEPH data collected at LEP in November 1995 at centre-of-mass energies of 130 and 136 GeV, corresponding to a total integrated luminosity of 5.7 pb-1. An excess of four jet events is observed with respect to the standard model predictions. In addition, these events exhibit an enhancement in the sum of the two di-jet masses around 105 GeV/c2. The properties of these events are studied and compared to the expectations from standard processes and to pair production hypotheses.

Buskulic, D., de Bonis, I., Decamp, D., Ghez, P., Goy, C., Lees, J.P., et al. (2011). Four-jet final state production in e+e- collisions at centre-of-mass energies of 130 and 136 GeV. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 71(1), 179-197.

Four-jet final state production in e+e- collisions at centre-of-mass energies of 130 and 136 GeV

RASO, Giuseppe;
2011

Abstract

The four-jet final state is analyzed to search for hadronic decays of pair-produced heavy particles. The analysis uses the ALEPH data collected at LEP in November 1995 at centre-of-mass energies of 130 and 136 GeV, corresponding to a total integrated luminosity of 5.7 pb-1. An excess of four jet events is observed with respect to the standard model predictions. In addition, these events exhibit an enhancement in the sum of the two di-jet masses around 105 GeV/c2. The properties of these events are studied and compared to the expectations from standard processes and to pair production hypotheses.
Settore FIS/01 - Fisica Sperimentale
Buskulic, D., de Bonis, I., Decamp, D., Ghez, P., Goy, C., Lees, J.P., et al. (2011). Four-jet final state production in e+e- collisions at centre-of-mass energies of 130 and 136 GeV. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 71(1), 179-197.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/75471
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