Abstract
We show that a single spin-parity resonance can manifest itself as two separated mass peaks, one decaying into an -wave system and the second decaying into a -wave system, with a rapid increase of the phase difference between their amplitudes arising mainly from the structure of the diffractive production process. This study clarifies questions related to the mass, width, and decay rates of the resonance raised by the recent high statistics data of the COMPASS Collaboration on production in at high energies.
- Received 14 February 2015
DOI:https://doi.org/10.1103/PhysRevLett.114.192001
© 2015 American Physical Society