A search for pair-production of long-lived, heavy, singly-charged particles has been performed with data collected by the ALEPH detector at a centre-of-mass energy of 172 GeV. Data at √s = 161, 136, and 130 GeV are also included to improve the sensitivity to lower masses. No candidate is found in the data. A model-independent 95% confidence level upper limit on the production cross section at 172 GeV of 0.2-0.4 pb is derived for masses between 45 and 86 GeV/c2. This cross section limit implies, assuming the MSSM, a lower limit of 67 (69) GeV/c2 on the mass of right-(left-) handed long-lived scalar taus or scalar muons and of 86 GeV/c2 on the mass of long-lived charginos.

Barate, R., Buskulic, D., Decamp, D., Ghez, P., Goy, C., Lees, J., et al. (1997). Search for pair-production of long-lived heavy charged particles in e+e- annihilation. PHYSICS LETTERS. SECTION B, 405(3-4), 379-388 [10.1016/S0370-2693(97)00715-6].

Search for pair-production of long-lived heavy charged particles in e+e- annihilation

CARPINELLI, Massimo;
1997

Abstract

A search for pair-production of long-lived, heavy, singly-charged particles has been performed with data collected by the ALEPH detector at a centre-of-mass energy of 172 GeV. Data at √s = 161, 136, and 130 GeV are also included to improve the sensitivity to lower masses. No candidate is found in the data. A model-independent 95% confidence level upper limit on the production cross section at 172 GeV of 0.2-0.4 pb is derived for masses between 45 and 86 GeV/c2. This cross section limit implies, assuming the MSSM, a lower limit of 67 (69) GeV/c2 on the mass of right-(left-) handed long-lived scalar taus or scalar muons and of 86 GeV/c2 on the mass of long-lived charginos.
Articolo in rivista - Articolo scientifico
Physics
English
379
388
10
Barate, R., Buskulic, D., Decamp, D., Ghez, P., Goy, C., Lees, J., et al. (1997). Search for pair-production of long-lived heavy charged particles in e+e- annihilation. PHYSICS LETTERS. SECTION B, 405(3-4), 379-388 [10.1016/S0370-2693(97)00715-6].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/390209
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