Scalar fully-charm and bottom tetraquarks under extreme temperatures

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

The European Physical Journal C Pub Date : 2025-05-23 DOI:10.1140/epjc/s10052-025-14090-4

A. Aydın, H. Sundu, J. Y. Süngü, E. Veli Veliev

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Abstract

Temperature-dependences of masses and current couplings of the ground state of the fully heavy tetraquarks \(T_{4c}\) and \(T_{4b}\), composed of charm (c) and bottom (b) quarks and antiquarks with spin-parities \(J^{PC} = 0^{++}\) are evaluated in the diquark–antidiquark picture using Thermal QCDSR including vacuum condensates up to dimension four. The calculated values for \(cc\bar{c}\bar{c}\) and \(bb\bar{b}\bar{b}\) tetraquark states at \(T=0\) align well with the experimental data on the broad structures. Based on the numerical analyses around the critical temperature, the mass of the \(T_{4c}\) state decreases by \(8\%\) compared to its vacuum state, while for its b partner, this percentage is approximately \(3.3\%\). For the decay constants, the reductions are approximately \(71\%\) and \(66.6\%\), respectively. The precise exploration of tetraquark states awaits future scrutiny in upcoming experiments, including Belle II, Super-B, PANDA, and LHCb.

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极端温度下的纯粲标量和底四夸克

利用热QCDSR计算了由粲夸克(c)、底夸克(b)和具有自旋对偶的反夸克\(J^{PC} = 0^{++}\)组成的全重四夸克\(T_{4c}\)和\(T_{4b}\)的质量的温度依赖性和基态的电流耦合，包括高达四维的真空凝聚。\(T=0\)上\(cc\bar{c}\bar{c}\)和\(bb\bar{b}\bar{b}\)四夸克态的计算值与广义结构的实验数据吻合得很好。根据临界温度附近的数值分析，与真空状态相比，\(T_{4c}\)状态的质量减少了\(8\%\)，而对于它的b伴侣，这个百分比大约为\(3.3\%\)。对于衰变常数，减少量分别约为\(71\%\)和\(66.6\%\)。四夸克态的精确探索有待于未来的实验，包括Belle II、Super-B、PANDA和LHCb。

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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.