Speaker
Maxim Mai
(HISKP, University of Bonn)
Description
The recoil retardation effect in the K¯d scattering length is studied. Using the nonrelativistic effective field theory approach, it is demonstrated that a systematic perturbative expansion of the recoil corrections in the parameter ξ=MK/mN is possible in spite of the fact that K-d scattering at low energies is inherently nonperturbative due to the large values of the K¯N scattering lengths.
The first-order correction to the K¯d scattering length due to single insertion of the retardation term in the multiple-scattering series is calculated. The recoil effect turns out to be reasonably small even at the physical value of MK/mN approx 0.5. In the talk I will present these results as well as our more recent estimation of higher order corrections and the possibility to resum the recoil corrections to all orders.
Primary author
Maxim Mai
(HISKP, University of Bonn)
Co-authors
Prof.
Akaki Rusetsky
(University Bonn)
Prof.
Evgeny Epelbaum
(University Bochum)
Dr
Vadim Baru
(University Bochum)
