# Supersymmetric and Conformal Features of Hadron Physics

## Abstract

**:**

## 1. Conformal Invariance of QCD and the Principle of Maximum Conformality

## 2. The Origin of the QCD Mass Scale and the dAFF Principle

## 3. Light-Front Holography

## 4. Superconformal Algebra and Supersymmetric Hadron Spectroscopy

## 5. Supersymmetric Hadron Spectroscopy for Heavy Quarks

## 6. Summary

## Funding

## Acknowledgments

## Conflicts of Interest

## References

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**Figure 1.**The convergence of theoretical methods for generating a model of hadron spectroscopy and dynamics with color confinement and meson-baryon supersymmetric relations.

**Figure 2.**The 4-plet representation of mass-degenerate hadronic states predicted by superconformal algebra [15]. Mesons are $q\overline{q}$ bound states, baryons are quark—antidiquark bound states and tetraquarks are diquark-antidiquark bound states. The supersymmetric ladder operator ${R}_{\lambda}^{\u2020}$ connects quarks and anti-diquark clusters of the same color.

**Figure 3.**Comparison of the $\rho /\omega $ meson Regge trajectory with the $J=3/2$$\Delta $ baryon trajectory. Superconformal algebra predicts the degeneracy of the meson and baryon trajectories if one identifies a meson with internal orbital angular momentum ${L}_{M}$ with its superpartner baryon with ${L}_{M}={L}_{B}+1.$ See Refs. [38,39].

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Brodsky, S.J.
Supersymmetric and Conformal Features of Hadron Physics. *Universe* **2018**, *4*, 120.
https://doi.org/10.3390/universe4110120

**AMA Style**

Brodsky SJ.
Supersymmetric and Conformal Features of Hadron Physics. *Universe*. 2018; 4(11):120.
https://doi.org/10.3390/universe4110120

**Chicago/Turabian Style**

Brodsky, Stanley J.
2018. "Supersymmetric and Conformal Features of Hadron Physics" *Universe* 4, no. 11: 120.
https://doi.org/10.3390/universe4110120