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.


Published in:
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 597, 2, 145-154
Year:
2004
ISSN:
03702693
Other identifiers:
Scopus: 2-s2.0-4143134156
Laboratories:




 Record created 2010-11-05, last modified 2018-01-28


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