用QCD求和规则分析d波\(\Sigma \)型粲重子态

IF 4.2 2区物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS

The European Physical Journal C Pub Date : 2023-08-03 DOI:10.1140/epjc/s10052-023-11852-w

Zhi-Gang Wang, Fei Lu, Yang Liu

引用次数: 1

摘要

我们构建 \(\Sigma \)用QCD和规则系统地研究了d波粲重子态。预测的质量 \(M=3.35^{+0.13}_{-0.18}\,\textrm{GeV}\) （\(3.33^{+0.13}_{-0.16}\,\textrm{GeV}\))， \(3.34^{+0.14}_{-0.18}\,\textrm{GeV}\) （\(3.35^{+0.13}_{-0.16}\,\textrm{GeV}\))及 \(3.35^{+0.12}_{-0.13}\, \textrm{GeV}\) （\(3.35^{+0.12}_{-0.14}\,\textrm{GeV}\))。 \(\Omega _c(0,2,{\frac{1}{2}}^+)\)， \(\Omega _c(0,2,{\frac{3}{2}}^+)\) 和 \(\Omega _c(0,2,{\frac{5}{2}}^+)\) 状态与实验数据非常吻合 \( 3327.1\pm 1.2 \text{ MeV }\) 从LHCb协作，并支持分配 \(\Omega _c(3327)\) 成为 \(\Sigma \)d型波 \(\Omega _c\) 具有自旋宇称的状态 \(J^P={\frac{1}{2}}^+\)， \({\frac{3}{2}}^+\) 或 \({\frac{5}{2}}^+\)．

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Analysis of the D-wave \(\Sigma \)-type charmed baryon states with the QCD sum rules

We construct the \(\Sigma \)-type currents to investigate the D-wave charmed baryon states with the QCD sum rules systematically. The predicted masses \(M=3.35^{+0.13}_{-0.18}\,\textrm{GeV}\) (\(3.33^{+0.13}_{-0.16}\,\textrm{GeV}\)), \(3.34^{+0.14}_{-0.18}\,\textrm{GeV}\) (\(3.35^{+0.13}_{-0.16}\,\textrm{GeV}\)) and \(3.35^{+0.12}_{-0.13}\, \textrm{GeV}\) (\(3.35^{+0.12}_{-0.14}\,\textrm{GeV}\)) for the \(\Omega _c(0,2,{\frac{1}{2}}^+)\), \(\Omega _c(0,2,{\frac{3}{2}}^+)\) and \(\Omega _c(0,2,{\frac{5}{2}}^+)\) states are in excellent agreement with the experimental data \( 3327.1\pm 1.2 \text{ MeV }\) from the LHCb collaboration, and support assigning the \(\Omega _c(3327)\) to be the \(\Sigma \)-type D-wave \(\Omega _c\) state with the spin-parity \(J^P={\frac{1}{2}}^+\), \({\frac{3}{2}}^+\) or \({\frac{5}{2}}^+\).

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来源期刊

The European Physical Journal C 物理-物理：粒子与场物理

CiteScore

8.10

自引率

15.90%

发文量

1008

审稿时长

2-4 weeks

期刊介绍： Experimental Physics I: Accelerator Based High-Energy Physics Hadron and lepton collider physics Lepton-nucleon scattering High-energy nuclear reactions Standard model precision tests Search for new physics beyond the standard model Heavy flavour physics Neutrino properties Particle detector developments Computational methods and analysis tools Experimental Physics II: Astroparticle Physics Dark matter searches High-energy cosmic rays Double beta decay Long baseline neutrino experiments Neutrino astronomy Axions and other weakly interacting light particles Gravitational waves and observational cosmology Particle detector developments Computational methods and analysis tools Theoretical Physics I: Phenomenology of the Standard Model and Beyond Electroweak interactions Quantum chromo dynamics Heavy quark physics and quark flavour mixing Neutrino physics Phenomenology of astro- and cosmoparticle physics Meson spectroscopy and non-perturbative QCD Low-energy effective field theories Lattice field theory High temperature QCD and heavy ion physics Phenomenology of supersymmetric extensions of the SM Phenomenology of non-supersymmetric extensions of the SM Model building and alternative models of electroweak symmetry breaking Flavour physics beyond the SM Computational algorithms and tools...etc.