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arXiv · 2410.22418

Dilepton production from moaton quasiparticles

Zohar Nussinov·Michael C. Ogilvie·Laurin Pannullo·Robert D. Pisarski·Fabian Rennecke·Stella T. Schindler·Marc Winstel
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Abstract

The phase diagram of QCD may contain a moat regime in a large region of temperature $T$ and chemical potential $\mu\neq0$. A moat regime is characterized by quasiparticle moatons (pions) whose energy is minimal at nonzero spatial momentum. At $\mu\neq 0$, higher mass dimension operators play a critical role in a moat regime. At dimension six, there are nine possible gauge invariant couplings between scalars and photons. For back-to-back dilepton production, only one operator contributes, which significantly enhances production near a moat threshold. This enhancement is an experimental signature of moatons.

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Zohar Nussinov, Michael C. Ogilvie, Laurin Pannullo, Robert D. Pisarski, Fabian Rennecke, Stella T. Schindler, Marc Winstel. 2024-10-29. Dilepton production from moaton quasiparticles. https://doi.org/10.1103/1f8w-p4m4

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