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10 papers · 2 filters
Photo-production of psi' Mesons at HERA
C. Adloff
Quasi-elastic (z >0.95) photo-production of psi' mesons has been observed at HERA for photon-proton centre-of-mass energies in the range 40 to 160 GeV. The psi' mesons were identif…
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…
Confirmation of a soft photon signal in excess of Q.E.D. expectations in pi p interactions at 280 GeV/c
A. Belogianni et al
Photons produced in pi p interactions at 280 GeV/c were detected by reconstructing the e+e- pairs produced via the materialisation of the photons in a 1 mm thick lead sheet placed…
Low Q^2 Jet Production at HERA and Virtual Photon Structure
C. Adloff
The transition between photoproduction and deep-inelastic scattering is investigated in jet production at the HERA ep collider, using data collected by the H1 experiment. Measureme…
Searches for Scalar Top and Scalar Bottom Quarks at LEP2
The ALEPH Collaboration
Searches for scalar top and bottom quarks have been performed with data collected by the ALEPH detector at LEP. The data sample consists of 21.7 pb^-1 taken at sqrt{s} = 161, 170,…