Broad resonances and beta-decay
نویسندگان
چکیده
منابع مشابه
Transport Dynamics of Broad Resonances
The propagation of short life time particles with consequently broad mass width are discussed in the context of transport descriptions. In the first part some known properties of finite life time particles such as resonances are reviewed and discussed at the example of the ρ-meson. Grave deficiencies in some of the transport treatment of broad resonances are disclosed and quantified. The second...
متن کاملVector Meson Decay of Baryon Resonances
One of the evidences for the discovery of a new state of matter that was quoted by the CERN press release in 2000 was the result of the CERES experiment that showed an excess of dileptons at invariant masses below the vector meson mass. In order to understand this phenomenon it is essential to consider the effect of conventional hadronic interactions on the vector mesons. We emphasize the relev...
متن کاملFast Symplectic Mapping and Long-term Stability Near Broad Resonances
Fast symplectic mapping, based on a canonical generator of the full-turn map in polar coordinates (I; ), is a powerful tool to study long-term stability in large hadron storage rings. Accurate maps for realistic lattices can be constructed in a few hours on a workstation computer, and can be iterated to follow orbits for 10 turns in less than 4 hours. Orbits of the map can also be used in a non...
متن کاملDouble beta decay
Double beta decay is a rare nuclear process changing the nuclear charge by two units leaving atomic number unchanged. The detection of the neutrino accompanied mode (A,Z)?(A,Z+2)+2e+ 2n e: with half-lives around 10 20 years is among the rarest decays ever observed. Of outmost importance for particle physics and especially neutrino physics, is the neutrinoless mode (A,Z)?(A,Z+2)+2e. This process...
متن کاملSuperallowed Fermi Beta Decay
Superallowed 0 → 0 nuclear beta decay provides a direct measure of the weak vector coupling constant, GV. We survey current world data on the nine accurately determined transitions of this type, which range from the decay of C to that of Co, and demonstrate that the results confirm conservation of the weak vector current (CVC) but differ at the 98% confidence level from the unitarity condition ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2015
ISSN: 0375-9474
DOI: 10.1016/j.nuclphysa.2015.04.003