Physics Theory Seminar with Eilens Lopez Saavedra on Near Threshold resonance in 11B and the puzzle of an exotic decay

The study of near-threshold resonances in weakly bound systems is an ex- citing topic in experimental and theoretical nuclear physics since they provide important information on the interaction of discrete states with the continuum. Recent theoretical developments aim to describe the continuum interaction. However, questions on the behavior, structure, and properties of the many- body systems close to the particle emission threshold remain open, making the experimental studies of near-threshold states and its characteristics crucial for constraining the theoretical e orts. In particular, a near-threshold proton reso- nance in 11B has long been sought since it would provide a less exotic explana- tion to the controversial observation of the unexpectedly large.