Interpolating fields, used to excite hadrons from the QCD vacuum in nonperturbative field- theoretic investigations of hadron properties, are explored with an emphasis on …
R Thomas, T Hilger, B Kämpfer - Nuclear Physics A, 2007 - Elsevier
The in-medium behavior of the nucleon spectral density including self-energies is revisited within the framework of QCD sum rules. Special emphasis is given to the density …
The contribution of nucleons to the quark condensate in nuclear matter includes a piece of first order in m π, arising from the contribution of low-momentum virtual pions to the π N σ …
MC Birse, B Krippa - Physics Letters B, 1996 - Elsevier
We evaluate the πN coupling constant using a QCD sum rule based on the pion-to-vacuum matrix element of the correlator of two interpolating nucleon fields. The part of the correlator …
MC Birse, B Krippa - Physical Review C, 1996 - APS
We evaluate the πNN, πΣΣ, and πΣΛ coupling constants using QCD sum rules based on pion-to-vacuum matrix elements of correlators of two interpolating baryon fields. The parts of …
We present a study of the strong isospin-breaking (IB) effect, due in QCD to the difference between u-and d-quark masses, in the leptonic decay constants of charmed and beauty …
Results for the first test of the ''crude''QCD continuum model, commonly used in QCD sum rule analyses, are presented for baryon correlation functions. The QCD continuum model is …
MC Birse, B Krippa - Physics Letters B, 1996 - Elsevier
The quark condensate in nuclear matter contains a term of order ϱmπ, arising from the contribution of low-momentum virtual pions to the πN sigma commutator. Standard …
CT Chan, EM Henley, T Meissner - arXiv preprint hep-ph/9905317, 1999 - arxiv.org
The electric dipole moments of nucleons (NEDM, d_N) are calculated using the method of QCD sum rules. Our calculations are based on the parity and time reversal violating …