Joint decay distribution in double-resonance production
نویسندگان
چکیده
منابع مشابه
Angular Distribution of Leptons in General tt̄ Production and Decay
Angular distribution of the secondary lepton in top-quark production followed by subsequent semi-leptonic decay is studied assuming general top-quark couplings. It is shown that the distribution does not depend on any possible anomalous tbW couplings and is determined only by the standard V −A decay vertex for any production mechanism if certain well-justified conditions are satisfied. PACS: 13...
متن کاملAre the production and decay of a resonance always independent?
The widely accepted assumption that the decay of a resonance proceeds independently of its production, quantitatively expressed as a factorizing formula for the differential cross section in the invariant mass of unpolarized resonance debris, is put under scrutiny. It is shown that the factorization is always valid for scalar and pseudoscalar resonances, although the usual version of the formul...
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 کاملDouble Beta Decay
The motivation, present status, and future plans of the search for ββ(0ν) decay are reviewed. It is argued that, motivated by the recent observations of neutrino oscillations, there is a reasonable hope that ββ(0ν) decay corresponding to the neutrino mass scale suggested by oscillations, mν ≈ 50 meV, actually exists. The challenges to achieve the sensitivity corresponding to this mass scale, an...
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: Il Nuovo Cimento
سال: 1965
ISSN: 0029-6341,1827-6121
DOI: 10.1007/bf02750479