# Hyperfine Splitting of Excited States of New Heavy Hadrons and Low-Energy Interaction of Hadronic Dark Matter with Photons, Nucleons, and Leptons

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## Abstract

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## 1. Introduction

## 2. Structure of the Lowest States of New Hadrons

## 3. Interaction of New Hadrons with Standard Leptons

## 4. New Heavy Hadrons Interaction with Nucleons

## 5. Discussion

## 6. Data Availability

## Author Contributions

## Funding

## Acknowledgments

## Conflicts of Interest

## References

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${N}_{a}{M}_{b}\to {N}_{c}{M}_{d}$ | ${\Delta}_{ab}=f(\Delta M,\Delta m)$ | signum ${\Delta}_{ab}$ |
---|---|---|

$p{M}^{0}\to n{M}^{+}$ | ${\Delta}_{p0}=\Delta M+\Delta m$ | ${\Delta}_{p0}>0$ (threshold) |

$n{M}^{+}\to p{M}^{0}$ | ${\Delta}_{n+}=-\Delta M-\Delta m$ | ${\Delta}_{n+}<0$ (non-threshold) |

$n{M}^{0}\to p{M}^{-}$ | ${\Delta}_{n0}=\Delta M-\Delta m$ | ${\Delta}_{n0}>0\phantom{\rule{0.166667em}{0ex}}\phantom{\rule{0.166667em}{0ex}}(\Delta M>\Delta m)$ |

$p{M}^{-}\to n{M}^{0}$ | ${\Delta}_{p-}=-\Delta M+\Delta m$ | ${\Delta}_{p-}>0\phantom{\rule{0.166667em}{0ex}}\phantom{\rule{0.166667em}{0ex}}(\Delta M<\Delta m)$ |

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**MDPI and ACS Style**

Kuksa, V.; Beylin, V.
Hyperfine Splitting of Excited States of New Heavy Hadrons and Low-Energy Interaction of Hadronic Dark Matter with Photons, Nucleons, and Leptons. *Universe* **2020**, *6*, 84.
https://doi.org/10.3390/universe6060084

**AMA Style**

Kuksa V, Beylin V.
Hyperfine Splitting of Excited States of New Heavy Hadrons and Low-Energy Interaction of Hadronic Dark Matter with Photons, Nucleons, and Leptons. *Universe*. 2020; 6(6):84.
https://doi.org/10.3390/universe6060084

**Chicago/Turabian Style**

Kuksa, Vladimir, and Vitaly Beylin.
2020. "Hyperfine Splitting of Excited States of New Heavy Hadrons and Low-Energy Interaction of Hadronic Dark Matter with Photons, Nucleons, and Leptons" *Universe* 6, no. 6: 84.
https://doi.org/10.3390/universe6060084