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arXiv · 2012.01599

LHC as a photon-photon collider: bounds on $\Gamma_{X\to\gamma\gamma}$

S. I. Godunov·E. K. Karkaryan·V. A. Novikov·A. N. Rozanov·M. I. Vysotsky·E. V. Zhemchugov
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Abstract

In the relatively recent CMS data, there is a hint on the existence of a resonance with the mass 28 GeV coupling to muons. Such a resonance should also couple to photons through the fermion loop, therefore it can be searched for in ultraperipheral collisions (UPC) of protons. We set an upper bound on the $X \gamma \gamma$ coupling constant from the data on $\mu^+ \mu^-$ pair production in UPC at the LHC. Our approach can be used for similar resonances should they appear in the future.

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S. I. Godunov, E. K. Karkaryan, V. A. Novikov, A. N. Rozanov, M. I. Vysotsky, E. V. Zhemchugov. 2020-12-02. LHC as a photon-photon collider: bounds on $\Gamma_{X\to\gamma\gamma}$. https://doi.org/10.1103/physrevd.103.035016

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