https://doi.org/10.1140/epjc/s10052-017-5402-8
Regular Article - Theoretical Physics
Generating a resonance-like structure in the reaction
1
Forschungszentrum Jülich, Institute for Advanced Simulation, Institut für Kernphysik and Jülich Center for Hadron Physics, 52425, Jülich, Germany
2
Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, 53115, Bonn, Germany
* e-mail: xiaohai.liu@fz-juelich.de
Received:
14
September
2017
Accepted:
22
November
2017
Published online:
1
December
2017
We investigate the process via
rescattering. The kinematic conditions for triangle singularities are perfectly satisfied in the rescattering diagrams. A resonance-like structure around the
threshold, which we denote X(5777), is predicted to be present in the invariant mass distribution of
. Because the relative weak
interaction does not support the existence of a dynamically generated hadronic molecule, X(5777) can be identified as a pure kinematical effect due to the triangle singularity. Its observation may help to establish a non-resonance interpretation for some XYZ particles.
© The Author(s), 2017