The (B)over-bar0→ D*+ (D)over-bar*0K- reaction to detect the I=0, JP=1+partner of the X0(2866)

Article Physics, Nuclear

X-0(2900) and its heavy quark spin partners in molecular picture

Mei-Wei Hu et al.

Summary: The recently observed X-0(2900) is a unique candidate with four different flavors, possibly forming a (D)bar *K* hadronic molecule. The search for its heavy quark spin partners can help reveal the nature of X-0(2900) and provide insights into its various possible forms.

CHINESE PHYSICS C (2021)

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Article Physics, Particles & Fields

Branching fractions of B- → D- X0,1(2900) and their implications

Yan-Ke Chen et al.

Summary: The study focuses on the production mechanism and decay processes of X-0,X-1(2900), and finds that the rescattering mechanism can result in relatively large branching fractions. The isospin can be investigated through B -> DX0,1 +/-,0 decays.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Article Physics, Particles & Fields

Mass spectrum and strong decays of tetraquark csqq states

Guang-Juan Wang et al.

Summary: The mass spectrum and strong decays of S-wave csqq states in the compact tetraquark scenario were systematically studied. The recently observed X0(2900) might be a good candidate for a tetraquark state, while future experimental search for X(2649) will be helpful.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Article Physics, Nuclear

X0,1 (2900) and (D- K+) invariant mass from QCD Laplace sum rules at NLO

R. Albuquerque et al.

Summary: The study revisits recent estimates of charm tetraquarks and molecules using QCD spectral sum rules (QSSR) with QCD Laplace sum rule (LSR), incorporating perturbative NLO corrections and contributions of quark and gluon condensates up to dimension-6 in OPE. Results are compared with experimental data, suggesting that the bump near the D-K+ threshold may come from interactions between molecules and scattering mechanisms.

NUCLEAR PHYSICS A (2021)

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Article Astronomy & Astrophysics

Kinematical cusp and resonance interpretations of the X(2900)

T. J. Burns et al.

Summary: This study investigates the interpretation of the LHCb vector udc over bar s over bar state X(2900) as a kinematical cusp effect from (D)*K* and (D-1)*K(*) interactions. A satisfactory fit to the Dalitz plot projection is achieved using a triangle diagram model with hadronic final state interactions. The evidence for the generation of resonances due to strong enough final state interactions is inconclusive, but provides a somewhat better fit.

PHYSICS LETTERS B (2021)

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Article Astronomy & Astrophysics

Heavy-strange meson molecules and possible candidates D*s0(2317), Ds1(2460), and X0(2900)

Shu-Yi Kong et al.

Summary: In this work, heavy-strange meson systems were systematically investigated to study possible molecules using a quasipotential Bethe-Salpter equation approach and one-boson exchange model. Molecular states were found and their relationships were explored, shedding light on the internal structure of various heavy-strange mesons.

PHYSICAL REVIEW D (2021)

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Article Physics, Particles & Fields