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arXiv · 1605.08741

The 750 GeV threshold to a new particle world

Samarth Jain·Fabrizio Margaroli·Stefano Moretti·Luca Panizzi
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Abstract

We show how an excess in the diphoton channel can be the effect of neither a resonance nor an end-point in a cascade decay, but rather of a threshold for virtual production of a pair of extra quarks, each with half of peak invariant mass, onsetting in both the $gg$-initiated production and the $\gamma\gamma$-induced decay of an off-shell $Z$ boson. For our analysis we consider as paradigmatic example the 750 GeV excess previously seen at the end of 2015 with the Run 2 data of the LHC but not confirmed with 2016 data.

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Samarth Jain, Fabrizio Margaroli, Stefano Moretti, Luca Panizzi. 2016-05-27. The 750 GeV threshold to a new particle world. https://doi.org/10.1103/physrevd.95.014037

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