Tau lepton physics at LEP
نویسنده
چکیده
The talk covers three contributions on (i) the final measurement of branching ratios and spectral functions of τ decays using the full LEP-I data from ALEPH, (ii) a preliminary measurement of the τ hadronic branching ratios from DELPHI and (iii) a measurement of the strange spectral function in hadronic τ decays from OPAL. These measurements are discussed and the relevant physics topics are briefly reviewed.
منابع مشابه
How to Interpret a Tau Excess at LEP2 within the MSSM
Neutralino and tau slepton pair production can naturally produce an excess of tau lepton pairs at the current LEP collider energies. We describe the constraints this has on the values of the mass parameters in the softly broken Supersymmetric Lagrangian, and consider the consequences for superpartner production at LEP and at the Fermilab Tevatron collider. The pair production of the LSP and a h...
متن کاملTau Physics Prospects at the Tau-charm Factory and at Other Machines
The prospects for tau physics at future high-luminosity facilities are briefly discussed. Although important (and often complementary) contributions will be made from other machines, the unique experimental environment near threshold makes the Tau-Charm Factory the best experimental tool for τ physics. Talk given at the Marbella Workshop on the Tau-Charm Factory Marbella, Spain, June 1993 ∗ On ...
متن کاملtau -pair production via photon-photon collisions at the CERN e+e- collider LEP.
The results obtained by the four experiments at the CERN e+ecollider LEP since they started taking data hwe allowed for precision studies of Z-boson physics that have confirmed the standard model predictions at the level of a few per mil [l]. This was, certainly, the main purpose of LEP and, up to now, all the efforts have been focused in this direction. However, LEP has other physics potential...
متن کاملDipole moments of tau as a sensitive probe for beyond standard model physics
CP violating dipole moments of leptons vanish at least to three loop order and are estimated to be ( ml Mev )×1.6×10−40 e-cm in the standard model (SM), whereml is the mass of the lepton. However they can receive potentially large contributions in some beyond SM scenarios and this makes them very sensitive probes of new physics. In this article we show that a non universal interaction, involvin...
متن کاملTau spin correlations and the anomalous magnetic moment
We show that the precise determination of the Tau magnetic properties is possible in the next generation accelerators, specially at B/Flavour factories. We define spin correlation observables suitable to extract the real part of the magnetic form factor that, for the first time, will allow to test the standard model-QED predictions. In particular, the predicted QED-dependence with both the mome...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2005