标量奇异介子 bb c ¯ ...

IF 3.4 3区物理与天体物理 Q2 PHYSICS, NUCLEAR

Journal of Physics G: Nuclear and Particle Physics Pub Date : 2024-09-17 DOI:10.1088/1361-6471/ad75ac

S S Agaev, K Azizi, B Barsbay and H Sundu

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引用次数: 0

摘要

我们在量子色动力学（QCD）和则方法的框架内研究了双电荷标量四夸克的性质。我们把它们分别建模为由轴向矢量和伪标量二夸克构成的二夸克-反二夸克态 X1 和 X2。我们用 QCD 两点和规则方法计算了这些粒子的质量和电流耦合。这些粒子质量的计算结果 m1 = (12715 ± 80) MeV 和 m2 = (13370 ± 95) MeV 被用来确定它们在运动学上允许的衰变模式。考虑到 X1 状态与介子、和的强衰变，对其全宽Γ1 进行了评估。利用、和过程来估算 Γ2。对这些结构的全宽 Γ1 = (63 ± 12) MeV 和 Γ2 = (79 ± 14) MeV 及其质量的预测可用于全重共振的实验研究。

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Scalar exotic mesons bb c ¯ ...

Properties of doubly charged scalar tetraquarks are investigated in the framework of the Quantum Chromodynamic (QCD) sum rule method. We model them as diquark–antidiquark states X1 and X2 built of axial-vector and pseudoscalar diquarks, respectively. The masses and current couplings of these particles are computed using the QCD two-point sum rule method. Results m1 = (12715 ± 80) MeV and m2 = (13370 ± 95) MeV obtained for the masses of these particles are used to determine their kinematically allowed decay modes. The full width Γ1 of the state X1 is evaluated by taking into account its strong decays to mesons , and . The processes , and are employed to estimate Γ2. Predictions obtained for the full widths Γ1 = (63 ± 12) MeV and Γ2 = (79 ± 14) MeV of these structures and their masses may be utilized in experimental studies of fully heavy resonances.

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来源期刊

Journal of Physics G: Nuclear and Particle Physics 物理-物理：核物理

CiteScore

7.60

自引率

5.70%

发文量

105

审稿时长

1 months

期刊介绍： Journal of Physics G: Nuclear and Particle Physics (JPhysG) publishes articles on theoretical and experimental topics in all areas of nuclear and particle physics, including nuclear and particle astrophysics. The journal welcomes submissions from any interface area between these fields. All aspects of fundamental nuclear physics research, including: nuclear forces and few-body systems; nuclear structure and nuclear reactions; rare decays and fundamental symmetries; hadronic physics, lattice QCD; heavy-ion physics; hot and dense matter, QCD phase diagram. All aspects of elementary particle physics research, including: high-energy particle physics; neutrino physics; phenomenology and theory; beyond standard model physics; electroweak interactions; fundamental symmetries. All aspects of nuclear and particle astrophysics including: nuclear physics of stars and stellar explosions; nucleosynthesis; nuclear equation of state; astrophysical neutrino physics; cosmic rays; dark matter. JPhysG publishes a variety of article types for the community. As well as high-quality research papers, this includes our prestigious topical review series, focus issues, and the rapid publication of letters.