Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-07-21
Physics
High Energy Physics
High Energy Physics - Phenomenology
Ph.D. thesis, 170 pages
Scientific paper
Effective field theory techniques are used to describe the interaction of heavy hadrons in a model independent way. Predictability is obtained by exploiting the symmetries of QCD. Heavy hadron chiral perturbation theory is reviewed and used to describe $D^*$ decays. The phenomenologically important $D^*D\pi$ coupling is extracted from data working to first order in the chiral and heavy quark symmetry breaking parameters. A method is described for determining $|V_{ub}|$ from exclusive semileptonic $B$ and $D$ decays with 10% uncertainty. An effective field theory for two-nucleon systems is then discussed. The large S-wave scattering lengths necessitate expanding around a non-trivial fixed point. A detailed discussion of the interplay between renormalization and the power counting is given. In power counting pion interactions with nucleons it is useful to consider three classes of pion: potential, radiation, and soft. A power counting for massive radiation is developed. Finally, it is shown that the leading terms in the effective theory for nucleon-nucleon interactions are invariant under Wigner's SU(4) spin-isospin symmetry in the infinite scattering length limit.
No associations
LandOfFree
Applications of Chiral Perturbation Theory in Reactions with Heavy Particles does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Applications of Chiral Perturbation Theory in Reactions with Heavy Particles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Applications of Chiral Perturbation Theory in Reactions with Heavy Particles will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-286257