Searching for the open flavor tetraquark T⁺⁺_cs0(2900) in the process B⁺→ K⁺ D⁺ D^-

2023/05/16 by Man-Yu Duan, En Wang, Duan, Man-Yu +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2305.09436

openalex publication_date 2023/05/16 · openalex created_date 2023/05/19 · openalex updated_date 2026/07/28

Abstract

Inspired by recent observations of T_cs0(2900)⁰ in the D_s⁺ π^- invariant mass distribution of B⁰ → D⁰ D_s⁺ π^- decay and T_cs0(2900)⁺⁺ in the D_s⁺ π⁺ invariant mass distribution of B⁺ → D^- D_s⁺ π⁺ decay, we investigate the T_cs0(2900)⁺⁺ contribution to the B⁺ → K⁺ D⁺ D^- decay in a molecular scenario, where we consider T_cs0(2900)r⁺⁺ as a D^{∗ +} K^∗+ molecular state. Our estimations indicate that the fit fraction of T_cs0(2900)⁺⁺ in the B⁺ → K⁺ D⁺ D^- is about 12.5%, and its signal is visible in the D⁺ K⁺ invariant mass distribution. With the involvement of T_cs0(2900)⁺⁺, the fit fractions of χ_c0(3915) and χ_c2(3930) may be much different with the ones obtained by the present amplitude analysis [Phys. Rev. D 102, 112003 (2020)], which may shed light on the long standing puzzle of χ_c0(3915) as the conventional charmonium.

Related

• Evidence of the open-flavor tetraquark T_cs2 in the process B⁺→ D^*-D_s⁺π⁺
• Theoretical study of the B⁺→ D^-D_s⁺π⁺ reaction
• Observation of the Open-Charm Tetraquark Candidate T c s 0 * ( 2870 ) 0 in the B − → D − D 0 K S 0 Decay
• T_{bc s} states in the process Υ→ D^- B⁰ D_s⁺
• Diffusion Monte Carlo calculation of compact T_cs0 and T_cs0 tetraquarks