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EnglishWe search, in the context of extra-dimension scenarios, for the possible existence of brane fluctuations, called branons. Events with a single photon or a single Z-boson and missing energy and momentum collected with the L3 detector in e+e- collisions at centre-of-mass energies √(2)=189-209 GeV are analysed. No excess over the Standard Model expectations is found and a lower limit at 95% confidence level of 103 GeV is derived for the mass of branons, for a scenario with small brane tensions. Alternatively, under the assumption of a light branon, brane tensions below 180 GeV are excluded.
| Titolo: | Search for branons at LEP |
| Autori: | |
| Data di pubblicazione: | 2004 |
| Rivista: | |
| Abstract: | We search, in the context of extra-dimension scenarios, for the possible existence of brane fluctuations, called branons. Events with a single photon or a single Z-boson and missing energy and momentum collected with the L3 detector in e+e- collisions at centre-of-mass energies √(2)=189-209 GeV are analysed. No excess over the Standard Model expectations is found and a lower limit at 95% confidence level of 103 GeV is derived for the mass of branons, for a scenario with small brane tensions. Alternatively, under the assumption of a light branon, brane tensions below 180 GeV are excluded. |
| Handle: | http://hdl.handle.net/11563/8283 |
| Appare nelle tipologie: | 1.1 Articolo su Rivista |
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