Title: Search for extra spatial dimensions at LEP 


Extra spatial dimensions are proposed by recent
theories that postulate the scale of gravity to be  of the same order
of the electroweak scale. 

These theories predict a sizable interaction between gravitons and
Standard Model particles. Effects of the interference of this  new
interactions with the Standard Model amplitudes of boson and fermion
pair production are searched for in the  data sample collected 
in  e+e- collisions at centre-of-mass energies between 192 GeV and 202 GeV 
corresponding to an integrated luminosity of 233 pb-1 by the L3 detector. 

No statistically significant hints for the existence of these effects
are found, disfavouring the hypothesis that the scale of
this new theory of gravity is of the order of the TeV.


Parallel session: 5, 11
Plenary Talks   : 7a, 9