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arXiv 1908.10759hep-ph
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LHC 7 TeV能量下强子的平均横动量与质量及重中性强子态的关系

Average Transverse Momenta of Hadrons at LHC Energy 7 TeV vs. Masses and Heavy Neutral Hadron States

P.N.Lebedev Physical Institute of Russian Academy of Science(俄罗斯科学院列别捷夫物理研究所)

Olga I. Piskounova

AI总结:

本研究基于夸克-胶子弦模型分析LHC 7 TeV下强子横动量谱与质量的关系,发现强子代质量间隙规律,提出隐对称中性强子态序列可作为暗物质候选者。

摘要:

本文在夸克-胶子弦模型(Quark-Gluon String Model, QGSM)框架下,研究了大型强子对撞机(LHC)多粒子产生过程中的强子横动量谱,探讨了LHC 7 TeV能量下平均横动量pt与介子、重子质量的依赖关系。通过QGSM对多种强子实验谱的描述,得出了若干结论。第一,重子和介子的平均横动量随强子质量增大而升高,因此对于美丽强子(beauty hadrons)而言,其平均横动量几乎与质量相等。第二,研究过程中发现了强子代之间质量间隙的规律性。该假说提出存在若干隐对称(既非介子也非重子)的中性强子态,其质量分别为0.251、0.682、1.85、5.04、13.7、37.2、101、275、748……GeV,这些质量由质量因子δ(M)=2.721828的等比数列生成。第三,重子-介子对称性在美丽强子质量以下似乎是破缺的,而随着质量增大,这些隐态会变得越来越稳定,因此所提出的强子态序列是暗物质的合适候选者——众所周知,暗物质贡献了宇宙质量的重要部分。平均横动量的增长可通过与重子平均pt的能量依赖类似的函数外推,即<pt> ∝ M^0.1。

英文摘要:

This paper examines the transverse momentum spectra of hadrons in the multiparticle production at LHC in the framework of the Quark-Gluon String Model (QGSM). It discusses the dependence of average pt on the masses of mesons and baryons at the LHC energy 7 TeV. The QGSM description of the experimental spectra of various hadrons led to the number of conclusions. I. The average transverse momenta of baryons and mesons are growing with the hadron mass, so for beauty hadrons, they are almost equal to the mass. II. By the product of research, a regularity has been detected in the mass gaps between hadron generations. This hypothesis suggests some hidden symmetrical (neither-meson-nor-baryon) neutral hadron states with the masses: 0.251,0.682,1.85,5.04,13.7,37.2,101.,275.,748.... GeV, which is produced by geometrical progression with the mass factor $δ(M)$= 2.721828 III. The baryon-meson symmetry seems broken until the mass of beauty hadrons, then the hidden states should be more and more stable with the growth of the mass, so the suggested sequence of hadronic states is a proper candidate for the Dark Matter that, you know, contributes the valuable part to the mass of Universe. The growing average transverse momenta are extrapolated with a similar function, as for energy dependence of average baryon $p_t$, $<p_t> \propto M^{0.1}$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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