782 articles – 3159 Notices  [english version]
 HAL : in2p3-00005698, version 1
 arXiv : hep-ex/9706013
 Physics Letters B 405 (1997) 379-388
 Search for pair-production of long-lived heavy charged particles in $e^+ e^-$ annihilation
 ALEPH Collaboration(s)
 (1997)
 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 0.2-0.4 pb 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.
 Thème(s) : Physique/Physique des Hautes Energies - Expérience
 Lien vers le texte intégral : http://fr.arXiv.org/abs/hep-ex/9706013
 in2p3-00005698, version 1 http://hal.in2p3.fr/in2p3-00005698 oai:hal.in2p3.fr:in2p3-00005698 Contributeur : Magali Damoiseaux <> Soumis le : Mardi 25 Juillet 2000, 12:09:44 Dernière modification le : Jeudi 2 Juin 2005, 17:13:51