TY  - JOUR
AU  - Malabarba, B. B.
AU  - Khemchandani, K. P.
AU  - Martinez Torres, A.
AU  - Oset, E.
PY  - 2023
DA  - 2023//
TI  - D1(2420) and its interactions with a kaon: Open charm states with strangeness
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 036016
EP  - 12pp
VL  - 107
IS  - 3
PB  - Amer Physical Soc
AB  - In this work we present an attempt to describe the X1(2900) found by the LHCb collaboration, in the experimental data on the invariant mass spectrum of D-K+, as a three-meson molecular state of the KpD over line system. We discuss that the interactions in all the subsystems are attractive in nature, with the pD over line interaction generating over line D1(2420) and the Kp resonating as K1(1270). We find that the system can form a three-body state but with a mass higher than that of X1(2900). We investigate the KpD system too, finding that the three-body dynamics generates an isoscalar state, which can be related to D*s1(2860), and an exotic isovector state. This latter state has a mass similar to that of the X0(2900) and X1(2900) states found by LHCb, but a very small width (similar to 7.4 +/- 0.9 MeV) and necessarily requires more than two quarks to describe its properties. We hope that our findings will encourage experimental investigations of the isovector KpD state. Finally, in the pursuit of finding a description for X1(2900), we study the K over line K*D* system where over line K*D* forms 0+, 1+, and 2+ states. We do not find a state that can be associated with X1(2900).
SN  - 2470-0010
UR  - https://arxiv.org/abs/2211.16222
UR  - https://doi.org/10.1103/PhysRevD.107.036016
DO  - 10.1103/PhysRevD.107.036016
LA  - English
N1  - WOS:000989327600013
ID  - Malabarba_etal2023
ER  -