Scattering light by light at 750 GeV at the LHC

By S. Fichet, G. Gersdorff, C. Royon. 2015

138 citations recorded by the source corpus.

We consider the possibility that the diphoton excess at 750 GeV is caused by a new scalar resonance produced in photon fusion. This scenario is parametrised by only one relevant effective couplings and is thus minimal. We show that this setup can reproduce both the production rate and width of the resonance, and is not in conflict with the 8 TeV limits on the diphoton cross section. The scenario also predicts event rates for $WW$, $ZZ$, $Z\gamma$ final states. We suggest to perform precision measurements by studying light-by-light scattering with intact protons detected in forward detectors. We construct a simple model that shows that the required couplings can be achieved with new vectorlike, uncolored fermions (with a strong Yukawa coupling to the resonance) which may also account for the required width.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/c228c70ae69951fa37c81d3679a966d1e59b82dc

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In Nuclear and High Energy Physics

1. M. Redi
2. Alessandro Strumia
3. R. Rattazzi
4. F. Riva
5. G. Giudice
6. A. Pomarol
7. A. Wulzer
8. G. Panico

Citations in the corpus

• What is the γγ resonance at 750 GeV? (2015, background): “ases as they give the minimum and maximum value of C, and also lead to a large gain in parton luminosity going from 8 to 13 TeV, as needed to t the data. On the other hand, Sproduction from (see also [6]) is disfavoured by the small value of r , which has a small uncertainty, because partonic photon”