33 citations · 121 across the 8 of their papers we have counts for
8 papers
Pionic Final State Interactions and the Hypertriton Lifetime
Fabian Hildenbrand, Hans-Werner Hammer
We analyze the contribution of pionic final state interactions (FSI) in the weak decay of the hypertriton. Focusing on the He channel, we find a contribution of the pionic FSI…
Lifetime of the hypertriton
F. Hildenbrand, H. -W. Hammer
We calculate the lifetime of the hypertriton as function of the separation energy in an effective field theory with and deuteron degrees of freedom. We also consider…
Nucleon Form Factors in the Space- and Timelike Regions
H. -W. Hammer
Dispersion relations provide a powerful tool to describe the electromagnetic form factors of the nucleon both in the spacelike and timelike regions with constraints from unitarity…
Spectral Content of Isoscalar Nucleon Form Factors
H. -W. Hammer, M. J. Ramsey-Musolf
The nucleon strange vector and isoscalar electromagnetic form factors are studied using a spectral decomposition. The K\bar{K} contribution to the electric and magnetic radii as we…
KN Scattering and the Nucleon Strangeness Radius
M. J. Ramsey-Musolf, H. -W. Hammer
The leading non-zero electric moment of the nucleon strange-quark vector current is the mean square strangeness radius, . We evaluate the lightest OZI-allowed contribution…
Contributions of strange quarks to the magnetic moment of the proton
H. -W. Hammer, D. Drechsel, T. Mart
Using the Gerasimov-Drell-Hearn sum rule and experimental total cross sections for photoproduction of , and mesons on the proton, we obtain upper bounds for the contribu…
Nucleon Strangeness and Unitarity
M. J. Musolf, H. -W. Hammer, D. Drechsel
The strange-quark vector current form factors of the nucleon are analyzed within the framework of dispersion relations. Particular attention is paid to contributions made by $K\bar…
Parity violating pion electroproduction off the nucleon
H. -W. Hammer, D. Drechsel
Parity violating (PV) contributions due to interference between and exchange are calculated for pion electroproduction off the nucleon. A phenomenological model with effe…