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Heavy Baryon Mixing in Chiral Perturbation Theory
C. Glenn Boyd, Ming Lu, Martin J. Savage
We discuss the SU(3) and heavy quark spin-symmetry breaking mixing between the Xi_c and Xi'_c charmed baryons. Chromomagnetic hyperfine interactions are the leading source of spin-…
The Delta-Delta Intermediate State in 1S0 Nucleon-Nucleon Scattering From Effective Field Theory
Martin J. Savage
We examine the role of the Delta-Delta intermediate state in low energy NN scattering using effective field theory. Theories both with and without pions are discussed. They are reg…
SU(3) Breaking in Neutral Current Axial Matrix Elements and the Spin Content of the Nucleon
Martin J. Savage, James Walden
We examine the effects of SU(3) breaking in the matrix elements of the flavour-diagonal axial currents between octet baryon states and find that SU(3) breaking may be substantial f…
Nucleon-Nucleon Scattering from Effective Field Theory
David B. Kaplan, Martin J. Savage, Mark B. Wise
We perform a nonperturbative calculation of the 1S0 NN scattering amplitude using an effective field theory (EFT) expansion. The expansion we advocate is a modification of what has…
Higher Order QCD Corrections to
Ming Lu, Michael Luke, Martin J. Savage +1
We calculate the corrections to the decay rate . For reasonable values of this term is of the same order as both the one-lo…