نتایج جستجو برای: weak interaction molecular physics

تعداد نتایج: 1426709  

1988
C. KENNEDY

A comprehensive review is provided of the electroweak polarization asymmetry at the Z”, a highly accurate measure of the 2’ coupling to fermions. Its significance as a precision test of the Standard Model is explored in detail. Empha.sized are the role of electroweak symmetry-breaking and radiative corrections; the nondecoupling of new physics beyond the 2’; and the testing of extensions of the...

2001

The role of atomic, molecular and plasma wall interaction processes in divertor plasmas of magnetic fusion devices is briefly outlined. Some critical issues in the atomic physics and plasma wall interaction databases, which determine the accuracy and predictive capabilities of divertor plasma modeling codes, are discussed in more detail.

2002
Johan Bijnens JOHAN BIJNENS

This talk contains a short overview of the history of the interplay of the weak and the strong interaction and CP -violation. It describes the phenomenology and the basic physics mechanisms involved in the Standard Model calculations of K → ππ decays with an emphasis on the evaluation of Penguin operator matrix-elements. a Presented at the Symposium and Workshop ”Continuous Advances in QCD 2002...

2000
Richard F. Lebed

We discuss a little-studied class of weak decay modes sensitive to only one quark topology at leading order in GF : M → mγ, where M,m are mesons with completely distinct flavor quantum numbers. Specifically, they proceed via the annihilation of the valence quarks through a W and the emission of a single hard photon, and thus provide a clear separation between CKM and strong interaction physics....

2015
Yisong Yang YISONG YANG

This paper considers the Einstein equations coupled with the nonabelian gauge and Higgs fields. It is shown that, when cosmic string solutions are sought in the Einstein-Georgi-Glashow system and the Einstein-Weinberg-Salam system governing the gravitational-electromagnetic-weak interaction forces, the self duality conditions lead to positive values of the cosmological constant which can be exp...

2005
David W. Maybury

New interactions with Lorentz scalar structure, arising from physics beyond the standard model of electroweak interactions, will induce effective pseudoscalar interactions after renormalization by weak interaction loop corrections. Such induced pseudoscalar interactions are strongly constrained by data on π → lνl decay. These limits on induced pseudoscalar interactions imply limits on the under...

2002
Zhiqiang Shi

In order to include massive neutrino theoretically, a new concept of the weak charges of the particles, fundamental fermions, intermediate bosons and hadrons, is introduced. A new conservation law of the weak charge is first reported. According to the chirality of the weak charge the origin of parity nonconservation in the weak interactions is reasonably explained. According to the symmetry of ...

2001
Shi-Jian Gu You-Quan Li

On the basis of Bethe ansatz solution of bosons with d-function interaction in a one-dimensional potential well, the thermodynamics equilibrium of the system in finite temperature is studied by using the strategy of Yang and Yang. The thermodynamics quantities, such as specific heat, etc., are obtained for the cases of the strong coupling and weak coupling limits respectively. © 2001 American I...

2012
MURRAY GELL-MANN

A new approach to the problem of the singularity of the weak interactions is presented. Its aim is to provide a theoretical interpretation of the extreme smallness of the violation of selection rules associated with the weak-vector-current operator appearing in the conventional Fermi or intermediate-vector-boson interaction Lagrangian. To illustrate what we have in mind, we note that on account...

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