2 research outputs found
A Measurement of the Tau Hadronic Branching Ratios
The exclusive and semi-exclusive branching ratios of the tau lepton hadronic
decay modes (h- v_t, h- pi0 v_t, h- pi0 pi0 v_t, h- \geq 2pi0 v_t, h- \geq 3pi0
v_t, 2h- h+ v_t, 2h- h+ pi0 v_t, 2h- h+ \geq 2pi0 v_t, 3h- 2h+ v_t and 3h- 2h+
\geq 1pi0 v_t) were measured with data from the DELPHI detector at LEP.Comment: 53 pages, 18 figures, Accepted by Eur. Phys. J.
Study of double-tagged gamma gamma events at LEPII
Double-tagged interactions of photons with virtualities Q^2 between 10 GeV^2
and 200 GeV^2 are studied with the data collected by DELPHI at LEPII from 1998
to 2000, corresponding to an integrated luminosity of 550 pb^{-1}. The gam*
gam* -> mu+mu- data agree with QED predictions. The cross-section of the
reaction gam* gam* -> hadrons is measured and compared to the LO and NLO BFKL
calculations.Comment: 17 pages, 9 figures, Accepted by Eur. Phys. J.