ar X iv : h ep - e x / 03 12 02 5 v 1 8 D ec 2 00 3 Absolute Branching Ratio Normalization for Rare π + and μ + Decays in the PIBETA Experiment
نویسنده
چکیده
We have used the PIBETA detector at the PSI for a precise measurement of rare pion and muon weak decays. We have collected a large statistical sample of (1) π
منابع مشابه
ar X iv : h ep - e x / 03 12 02 5 v 2 1 0 D ec 2 00 3 Absolute Branching Ratio Normalization for Rare π + and μ + Decays in the PIBETA Experiment
We have used the PIBETA detector at the PSI for a precise measurement of rare pion and muon weak decays. We have collected a large statistical sample of (1) π
متن کاملar X iv : h ep - p h / 03 12 17 7 v 1 1 5 D ec 2 00 3 Chargino contribution to the rare decay b → ssd̄
The rare decay b → ssd̄ is studied in the supersymmetric standard model by considering the contribution from the chargino box diagrams. We find that this contribution amounts to 10 in the branching ratio. PACS: 12.15.Mm, 13.90.+i, 14.40.Lb, 14.40.Nd [email protected] [email protected]
متن کاملar X iv : h ep - e x / 03 12 04 1 v 1 1 2 D ec 2 00 3 RADIATIVE AND ELECTROWEAK RARE B DECAYS
This report summarizes the latest experimental results on radiative and electroweak rare B meson decays. These rare decay processes proceed through the Flavor-Changing-Neutral-Current processes, and thus are sensitive to the postulated new particles in the theories beyond the Standard Model. Experiments at e + e − colliders, Belle, BaBar and CLEO, have been playing the dominant role, while the ...
متن کاملar X iv : h ep - p h / 05 12 10 1 v 1 8 D ec 2 00 5 Hard spectator - scattering in B → ππ decays at NNLO ∗
We compute the 1-loop (NNLO) corrections to hard spectator-scattering in tree-dominated hadronic B decays. Depending on the values of hadronic input parameters the corrections are shown to have a significant impact on the B → ππ branching fractions.
متن کاملar X iv : h ep - p h / 06 11 05 4 v 2 6 D ec 2 00 6 Lepton flavor violating semileptonic τ decays τ → lP ( V ) in a topcolor scenario
The contributions of the neutral top-pion π t and the non-universal gauge boson Z ′ predicted by topcolor scenario to the lepton flavor violating (LFV ) semileptonic τ decays τ → lP (V ) (P = π, η, η′ and V = ρ, φ) are discussed. We find that the contributions of Z ′ to these decay processes are generally larger than those from π t . π 0 t can only make the value of the branching ratio Br(τ → l...
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 2003