Measurement of the spectral functions of vector current hadronic tau decays
作者： R. Barate et al.
关键词: Meson 、 Lepton 、 Isospin 、 Particle physics 、 Form factor (quantum field theory) 、 Nuclear physics 、 Physics 、 Pion 、 Hadron 、 Current (mathematics) 、 Electron–positron annihilation
摘要: A measurement of the spectral functions non-strange tau vector current final states is presented, using 124 358 pairs recorded by ALEPH detector at LEP during years 1991 to 1994. The dominant two-and four-pion decay channels are compared published results ece-annihilation experiments via isospin rotation. combined fit pion form factor from decays and e(+)e(-)data performed different parameaizations. mass width rho(+/-)(770) p(0)(770) separately determined in order extract possible violating effects. differences measured be M
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