Chiral perturbation theory with tensor sources
نویسندگان
چکیده
منابع مشابه
Chiral Perturbation Theory for Tensor Mesons
Interactions of a2, K ∗ 2 , f2 and f ′ 2 tensor-mesons with low-energy π,K, η, η ′ pseudo-scalar mesons are constrained by chiral symmetry. We derive a chiral Lagrangian of tensor mesons in which the tensor mesons are treated as heavy non-relativistic matter fields. Using 1/Nc counting, we derive relations among unknown couplings of the chiral Lagrangian. Chiral perturbation theory is applied t...
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The implementation of tensor sources in Chiral Lagrangians allows the computation of Green functions and form factors involving tensor currents, that is, quark bilinears of the form q̄i σ μν q j. Whereas only four new terms show up at O(p4), we find around a hundred of them at O(p6). So it becomes essential to ensure that this set o operators is indeed minimal and non– redundant (i.e., it is a b...
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2007
ISSN: 1029-8479
DOI: 10.1088/1126-6708/2007/09/078