منابع مشابه
Effective Field Theory
Attempts to apply effective field theory (EFT) methods to nonrelativistic nucleon-nucleon (N N) scattering have raised questions about the nature and limitations of an EFT expansion when used nonperturbatively. We discuss the characteristics of a meaningful EFT analysis and compare them with traditional approaches to N N scattering. A key feature of an EFT treatment is a systematic expansion in...
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We obtain perturbative expressions for jet distributions using soft-collinear effective theory (SCET). By matching SCET onto QCD at high energy, tree level matrix elements and higher order virtual corrections can be reproduced in SCET. The resulting operators are then evolved to lower scales, with additional operators being populated by required threshold matchings in the effective theory. We s...
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At low energies, few-body systems with large scattering length exhibit universal features (universality) that are independent of the interaction details. Some consequences are the existence of a shallow bound state and the Efimov effect1 in the twoand three-body sectors, respectively. These universal properties have a wide range of applications, from particle and nuclear to atomic and molecular...
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Pionless effective field theory with dibaryon fields is reexamined for observables involving the deuteron. The electromagnetic form factors of the deuteron and the total cross sections of radiative neutron capture on the proton, n p → d γ, are calculated. The low energy constants of vector(photon)-dibaryon-dibaryon vertices in the effective lagrangian are fixed primarily by the one-body vector(...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2005
ISSN: 0375-9474
DOI: 10.1016/j.nuclphysa.2005.03.004