Hadronic parity violation and effective field theory
نویسندگان
چکیده
منابع مشابه
Overview of hadronic parity violation
The subject of hadronic parity violation is nearly fifty years old, but a good deal of uncertainty remains, despite many efforts both theoretical and experimental. A brief summary of the field is presented and a plan is proposed for new experimental work which, when combined with a new theoretical tack based on effective field theory, should lead to resolution of the present difficulties. PACS....
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Our present understanding of the AS=O hadronic weak interaction is based on a collection of high precision experiments in the two-nucleon system and light nuclei, which isolate the weak interaction via its parity-violating signature. The weak nucleon-nucleon interaction at low and intermediate energies is described in terms of a meson exchange model involving n, p and W mesons, with one strong ...
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Effective field theory, including pions, provides a consistent and systematic description of nucleon-nucleon strong interactions up to center-of-mass momentum p ∼ 300 MeV per nucleon. We describe the inclusion of hadronic parity violation into this effective field theory and find an analytic form for the deuteron anapole moment at leading order in the expansion.
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We consider a pionless effective theory with dibaryon fields for the description of the weak process involving two nucleons. We construct leading order Lagrangians that contain nucleon-dibaryon weak coupling constants. We calculate the physical observable in the photodisintegration of the deuteron at threshold and obtain the result in terms of the nucleon-dibaryon weak coupling constants. Relat...
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ژورنال
عنوان ژورنال: The European Physical Journal A
سال: 2009
ISSN: 1434-6001,1434-601X
DOI: 10.1140/epja/i2009-10798-1