Abstract
In the model of low-energy interactions near threshold (Ivanov A N et al 2004 Eur. Phys. J. A 21 11 (Preprint nucl-th/0310081), Ivanov A N et al 2005 Eur. Phys. J. A 23 79 (Preprint nucl-th/0406053)), we calculate isospin-breaking corrections to the energy level displacement of the ground state of kaonic hydrogen, investigated by Meißner, Raha and Rusetsky (2004 Eur. Phys. J. C 35 349 (Preprint hep-ph/0402261)) within the non-relativistic effective Lagrangian approach based on ChPT by Gasser and Leutwyler. Our results agree well with those by Meißner et al. In addition we calculate the dispersive corrections, caused by the transition with the pair on-mass shell. We show also how hypothesis on the dominant role of the -cusp for the S-wave amplitude of low-energy K−p scattering near threshold, used by Meißner et al, can be realized in our approach. The result agrees fully with that of Meißner et al.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
