DYNAMICAL MODEL OF ELECTROWEAK PION PRODUCTION REACTION
نویسندگان
چکیده
منابع مشابه
Dynamical Model of Coherent Electroweak Pion Production Reactions on Nuclei
We have developed a dynamical model for a unified description of the pion-nucleus scattering and photoand neutrino-induced coherent pion production on nuclei. Our approach is based on a combined use of the Sato-Lee model for the electroweak pion production on a single nucleon and the ∆-hole model of pion-nucleus scattering. Numerical calculations are carried out for the case of the 12C target. ...
متن کامل0 Dynamical model for Pion − Nucleon Bremsstrahlung
A dynamical model based on effective Lagrangians is proposed to describe the bremsstrahlung reaction πN → πNγ at low energies. The ∆(1232) degrees of freedom are incorporated in a way consistent with both, electromagnetic gauge invariance and invariance under contact transformations. The model also includes the initial and final state rescattering of hadrons via a T-matrix with off-shell effect...
متن کاملLeptonic Pion Decay And Physics Beyond The Electroweak Standard Model
The ratio of branching ratios in leptonic pion decay Rπ ≡ (Γ(π− → eνe))/(Γ(π − → μνμ)) is a powerfully sensitive probe of new interactions beyond the electroweak standard model. This is due to the chirality suppression of the standard model amplitude for the decay, which results in a precise prediction for the ratio, and suppressed amplitudes for new contributions to interfere with. We calculat...
متن کاملDynamical Pion Production via Parametric Resonance from Disoriented Chiral Condensate
We discuss a dynamical mechanism of pion production from disoriented chiral condensates (DCC). It leads to an explosive production of pions via the parametric amplification mechanism, which is similar to the reheating mechanism in inflationary cosmology. Classically, it is related with the instability in the solutions of the Mathieu equation and we explore the quantum aspects of the mechanism. ...
متن کاملDynamical Electroweak Symmetry Breaking
We review the status of and recent developments in dynamical electroweak symmetry breaking, concentrating on the ideas of technicolour and top quark condensates. The emphasis is on the essential physical ideas and experimental implications rather than on detailed mathematical formalism. After a general overview of the subject, we give a first introduction to technicolour, and extended technicol...
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: International Journal of Modern Physics A
سال: 2005
ISSN: 0217-751X,1793-656X
DOI: 10.1142/s0217751x05023153