Prediction of possible DK1 bound states

Stimulated by recent experimental observation of X 1 ( 2900 ) just below the D ¯ 1 K threshold, we extend our previous study of D ¯ 1 D S-wave bound state by vector meson exchange to D ¯ 1 K system as well as similar D ¯ K 1 , D 1 K and D K 1 systems to look for possible bound states. We find that t...

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Bibliographic Details
Published in:The European physical journal. A, Hadrons and nuclei Hadrons and nuclei, 2021-04, Vol.57 (4)
Main Authors: Dong, Xiang-Kun, Zou, Bing-Song
Format: Article
Language:English
Subjects:
Hadrons
Heavy Ions
Nuclear Fusion
Nuclear Physics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Regular Article –Theoretical Physics
S waves
Vector mesons
Online Access:Get full text
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Summary:Stimulated by recent experimental observation of X 1 ( 2900 ) just below the D ¯ 1 K threshold, we extend our previous study of D ¯ 1 D S-wave bound state by vector meson exchange to D ¯ 1 K system as well as similar D ¯ K 1 , D 1 K and D K 1 systems to look for possible bound states. We find that the potential of D K 1 is attractive and strong enough to form bound states with mass around 3110 MeV for D K 1 ( 1270 ) and 3240 MeV for D K 1 ( 1400 ) . D 1 K is also attractive but weaker, hardly enough to form bound states. While D ¯ K 1 becomes further less attractive, the potential between D ¯ 1 K is the weakest, definitely too weak to form any bound state, which excludes the recently observed X 1 ( 2900 ) to be a D ¯ 1 K bound state. We also give the decay properties of the predicted D K 1 bound states.
ISSN:1434-6001
1434-601X
DOI:10.1140/epja/s10050-021-00442-7