Chiral perturbation theory analysis of the baryon magnetic moments
نویسندگان
چکیده
منابع مشابه
Baryon magnetic moments in chiral perturbation theory
We consider the chiral expansion of the octet baryon magnetic moments in heavy baryon chiral perturbation theory including all terms which are of order q4. These terms are formally of quadratic order in the quark masses. We show that despite the large non– analytic quark mass corrections to the Coleman–Glashow relations at order q3, including all analytic and non–analytic corrections at order q...
متن کاملBaryon chiral perturbation theory
We provide an introduction to the power-counting issue in baryon chiral perturbation theory and discuss some recent developments in the manifestly Lorentz-invariant formulation of the one-nucleon sector. As explicit applications we consider the chiral expansion of the nucleon mass, its convergence properties, and calculations of the electromagnetic and axial form factors of the nucleon.
متن کاملThe Okubo relation for the baryon magnetic moments and chiral perturbation theory
We analyze the Okubo SU(3) relation among the hyperon magnetic moments in the usual scheme of chiral perturbation theory (ChPT). We find a simple way to classify one-loop diagrams, including those with intermediate decuplet baryons, according to whether or not they satisfy the Okubo relation. Contrary to the conventional wisdom, one-loop contributions to the hyperon magnetic moments in general ...
متن کاملLeading SU(3)-breaking corrections to the baryon magnetic moments in chiral perturbation theory.
We calculate the baryon magnetic moments using covariant chiral perturbation theory (chiPT) within the extended-on-mass-shell renormalization scheme. By fitting the two available low-energy constants, we improve the Coleman-Glashow description of the data when we include the leading SU(3)-breaking effects coming from the lowest-order loops. This success is in dramatic contrast with previous att...
متن کاملThe η′ in baryon chiral perturbation theory
We include in a systematic way the η′ in baryon chiral perturbation theory. The most general relativistic effective Lagrangian describing the interaction of the lowest lying baryon octet with the Goldstone boson octet and the η′ is presented up to linear order in the derivative expansion and its heavy baryon limit is obtained. As explicit examples, we calculate the baryon masses and the πN σ-te...
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: Physics Letters B
سال: 1993
ISSN: 0370-2693
DOI: 10.1016/0370-2693(93)90430-p