Comment on "Possibility of Deeply Bound Hadronic Molecules from Single Pion Exchange"

TL;DR

This paper argues that when unitarity constraints are correctly applied, the proposed deeply bound hadronic molecules from single pion exchange do not exist, challenging previous claims.

Contribution

It provides a critical analysis showing the non-existence of certain hadronic molecules under proper unitarity constraints.

Findings

Deeply bound hadronic molecules do not exist when unitarity is properly imposed.

Challenges previous proposals of such molecules based on single pion exchange.

Highlights importance of unitarity in hadronic molecule calculations.

Abstract

We demonstrate that in calculation, where unitarity constraints are properly imposed, the deeply bound hadronic molecules recently proposed by Close and Downum do not exist.