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EnglishA search for single sneutrino production under the assumption that R-parity is violated via a single dominant LL (E) over bar coupling is presented. This search considers the process egamma --> (nu) over tildel and is performed using the data collected by the ALEPH detector at centre-of-mass energies from 189 GeV up to 209 GeV corresponding to an integrated luminosity of 637.1 pb(-1). The numbers of observed candidate events are in agreement with Standard Model expectations and 95% confidence level upper limits on five of the LLP couplings are given as a function of the assumed sneutrino mass.
http://hdl.handle.net/11384/4839| Titolo: | Search for R-parity violating production of single sneutrinos in e(+)e(-) collisions at root s=189-209 GeV |
| Autori interni: | LIGABUE, FRANCO ROLANDI, LUIGI |
| Data di pubblicazione: | 2002 |
| Rivista: | THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS |
| Abstract: | A search for single sneutrino production under the assumption that R-parity is violated via a single dominant LL (E) over bar coupling is presented. This search considers the process egamma --> (nu) over tildel and is performed using the data collected by the ALEPH detector at centre-of-mass energies from 189 GeV up to 209 GeV corresponding to an integrated luminosity of 637.1 pb(-1). The numbers of observed candidate events are in agreement with Standard Model expectations and 95% confidence level upper limits on five of the LLP couplings are given as a function of the assumed sneutrino mass. |
| Handle: | http://hdl.handle.net/11384/4839 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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