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research article
Search for branons at LEP
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. © 2004 Published by Elsevier B.V.
Type
research article
Scopus ID
2-s2.0-4143134156
Authors
Achard, P.
•
Adriani, O.
•
Aguilar-Benitez, M.
•
Alcaraz, J.
•
Alemanni, G.
•
Allaby, J.
•
Aloisio, A.
•
Alviggi, M.G.
•
Anderhub, H.
•
Andreev, V.P.
Publication date
2004
Volume
597
Issue
2
Start page
145
End page
154
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
November 5, 2010
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