2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/177863Two broad charmed mesons, the D_0^* and D_1', have recently been observed. We examine the quark model predictions for the D_0^* and D_1' properties and discuss experimental measurements that can shed light on them. We find that these states are well described as the broad, j=1/2 non-strange charmed P-wave mesons. Understanding the D_0^* and D_1' states can provide important insights into the D_{sJ}^*(2317), D_{sJ}(2460) states whose unexpected properties have led to renewed interest in hadron spectroscopy.7 pages. Some additional discussion and referencesHigh Energy Physics - PhenomenologyHigh Energy Physics - Experimenttext