ETHNP (Effective Theories in Hadron and Nuclear Physics)

On the possible existence of a S=−3,I=1 pentaquark

No programado

15m

1001-Primera-1-1-1 - Paterna. Seminario (Universe)

Saturday morning (Session 4)

Descripción

In this exploratory work we analyze the possible existence of a strangeness $S=-3$, isospin $I=1$ pentaquark state $P_{sss}$ generated dynamically from the $\bar{K}\Xi$ interaction. We employ a unitarized scheme in coupled channels based on the chiral Lagrangian expanded up to next-to-leading order (NLO), and show that the inclusion of the NLO terms can be crucial to provide the necessary attraction that favors the existence of such triply strange pentaquark. The $\bar{K}\Xi$ femtoscopic correlation functions are calculated as example of a possible experimental measurement in which a direct signal of the $P_{sss}$ state could be observed.