2023/06/27 by Ashanujjaman, Saiyad, Banik, Sumit, Coloretti, Guglielmo +3 · 7 citations
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph)
paper · doi:10.48550/arxiv.2306.15722
We explore the possibility that an SU(2)L triplet scalar with hypercharge Y=0 is the origin of the 95 GeV diphoton excess. For a small mixing angle with the Standard Model Higgs, its neutral component has naturally a sizable branching ratio to γγ such that its Drell-Yan production via pp→ W^*→ H H^± is sufficient to obtain the desired signal strength, where H^± is the charged Higgs component of the triplet. The predictions of this setup are: 1) The γγ signal has a pT spectrum different from gluon fusion but similar to associated production. 2) Photons are produced in association with tau leptons and jets, but generally do not fall into the vector-boson fusion category. 3) The existence of a charged Higgs with mH^±≈ (95±5) GeV leading to σ(pp→ ττνν)≈0.4 pb, which is of the same level as the current limit and can be discovered with Run 3 data. 4) A positive definite shift in the W mass as suggested by the current global electroweak fit.