RT Journal Article
T1 Khuri-Treiman equations for 3π decays of particles with spin
A1 Albaladejo, M.
A1 Winney, D.
A1 Danilkin, I. V.
A1 Fernández Ramírez, C.
A1 Mathieu, V.
A1 Mikhasenko, M.
A1 Pilloni, A.
A1 Silva Castro, J. A.
A1 Szczepaniak, A. P.
AB Khuri-Treiman equations have proven to be a useful theoretical tool in the analysis of three-body decays, especially into the 3 π final state. In this work we present in full detail the necessary generalization of the formalism to study the decays of particles with arbitrary spin, parity, and charge conjugation. To this extent, we find it most convenient to work with helicity amplitudes instead of the so-called invariant amplitudes, especially when dealing with the unitarity relations. The isobar expansions in the three possible ( s -, t -, and u -) final channels are related with the appropriate crossing matrices. We pay special attention to the kinematical singularities and constraints of the helicity amplitudes, showing that these can be derived by means of the crossing matrix.
PB APS Physics
SN 2470-0010
YR 2020
FD 2020-03-13
LK https://hdl.handle.net/20.500.14352/7255
UL https://hdl.handle.net/20.500.14352/7255
LA eng
NO Ministerio de Ciencia e Innovación (MICINN)
DS Docta Complutense
RD 30 abr 2024