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15 papers · 1 filter
Integration of Lie bialgebroids
Kirill C. H. Mackenzie, Ping Xu
We prove that under certain mild assumptions a Lie bialgebroid integrates to a Poisson groupoid. This includes, in particular, a new proof of the existence of local symplectic grou…
Quantum affine Toda solitons
N. J. Mackay
We review some of the progress in affine Toda field theories in recent years, explain why known dualities cannot easily be extended, and make some suggestions for what should be so…
Conserved Charges and Supersymmetry in Principal Chiral Models
J. M. Evans, M. Hassan, N. J. MacKay +1
We report on investigations of local (and non-local) charges in bosonic and supersymmetric principal chiral models in 1+1 dimensions. In the bosonic PCM there is a classically cons…
Classical lifting processes and multiplicative vector fields
Kirill Mackenzie, Ping Xu
We extend the calculus of multiplicative vector fields and differential forms and their intrinsic derivatives from Lie groups to Lie groupoids; this generalization turns out to inc…
Updated measurement of the tau lepton lifetime
The ALEPH Collaboration
A new measurement of the mean lifetime of the tau lepton is presented. Three different analysis methods are applied to a sample of 90000 tau pairs, collected in 1993 and 1994 with…
Searches for Supersymmetry in the photon(s) plus missing energy channels at = 161 GeV and 172 GeV
ALEPH Collaboration
Searches for supersymmetric particles in channels with one or more photons and missing energy have been performed with data collected by the ALEPH detector at LEP. The data consist…