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arXiv · hep-ex/9706013

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

ALEPH Collaboration
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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 \sqrt{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 0.2-0.4pb is derived for masses between 45 and 86 GeV/c^2. This cross section limit implies, assuming the MSSM, a lower limit of 67 (69) GeV/c^2 on the mass of right- (left-) handed long-lived scalar taus or scalar muons and of 86 GeV/c^2 on the mass of long-lived charginos.

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ALEPH Collaboration. 1997-06-13. Search for pair-production of long-lived heavy charged particles in e+e- annihilation. https://doi.org/10.1016/s0370-2693(97)00715-6

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