Abstract
We investigate the production with a decay into via the and triangle loops. These loops produce a peak around 1.42 GeV in the invariant mass distribution, which is the same mechanism as the one considered to explain the peak. In the distribution obtained by fixing the invariant mass to some values, a clear peak of is seen, and the distribution has a peak around , which is caused by the triangle mechanism of the loop. The branching ratio of with by the triangle mechanism, obtained by integrating the distribution from 1 to 1.6 GeV, is estimated to be the order . Future measurements of the branching ratio and the invariant mass distribution predicted in this work would give further clues to clarify the nature of the peak.
2 More- Received 26 February 2020
- Accepted 29 March 2020
DOI:https://doi.org/10.1103/PhysRevD.101.074041
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society