1.9k citations · 10.7k across the 143 of their papers we have counts for
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Proton-proton scattering above 3 GeV/c
A. Sibirtsev, J. Haidenbauer, H. -W. Hammer +2
A large set of data on proton-proton differential cross sections, analyzing powers and the double polarization parameter A_NN is analyzed employing the Regge formalism. We find tha…
Range corrections for two-neutron halo nuclei in effective theory
David L. Canham, H. -W. Hammer
The range corrections to the universal properties and structure of two-neutron halo nuclei are investigated within an effective quantum mechanics framework. Treating the nucleus as…
On the modification of the Efimov spectrum in a finite cubic box
Simon Kreuzer, H. -W. Hammer
Three particles with large scattering length display a universal spectrum of three-body bound states called "Efimov trimers''. We calculate the modification of the Efimov trimers o…
Causality and universality in low-energy quantum scattering
H. -W. Hammer, Dean Lee
We generalize Wigner's causality bounds and Bethe's integral formula for the effective range to arbitrary dimension and arbitrary angular momentum. Moreover, we discuss the impact…
On the scattering of D and D* mesons off the X(3872)
David L. Canham, H. -W. Hammer, Roxanne P. Springer
Both the mass (just below the D^{*0}Dbar^0 threshold) and the likely quantum numbers (J^{PC}=1^{++}) of the X(3872) suggest that it is either a weakly-bound hadronic ``molecule'' o…
Resonant Atom-Dimer Relaxation in Ultracold Atoms
Kerstin Helfrich, H. -W. Hammer
Three-body systems with large scattering length display universal phenomena associated with a discrete scaling symmetry. These phenomena include resonant enhancement of three-body…
Universality in QCD and Halo Nuclei
H. -W. Hammer
Effective Field Theory (EFT) provides a powerful framework to exploit a separation of scales in order to perform systematically improvable, model-independent calculations. We apply…