Baryonic Higgs at the LHC

Duerr, Michael; Smirnov, Juri; Fileviez Perez, Pavel

Preprint/Report

PUBDB-2017-01811

Baryonic Higgs at the LHC

Duerr, M. (Corresponding author)DESY* ; Fileviez Perez, P. ; Smirnov, J.

2017

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Report No.: DESY-17-050; arXiv:1704.03811

Abstract: We investigate the possible collider signatures of a new Higgs in simple extensions of the Standard Model where baryon number is a local symmetry spontaneously broken at the low scale. We refer to this new Higgs as 'Baryonic Higgs'. This Higgs has peculiar properties since it can decay into all Standard Model particles, the leptophobic gauge boson, and the vector-like quarks present in these theories to ensure anomaly cancellation. We investigate in detail the constraints from the $\gamma \gamma$, $Z \gamma$, $Z Z$, and $W W$ searches at the Large Hadron Collider, needed to find a lower bound on the scale at which baryon number is spontaneously broken. The di-photon channel turns out to be a very sensitive probe in the case of small scalar mixing and can severely constrain the baryonic scale. We also study the properties of the leptophobic gauge boson in order to understand the testability of these theories at the LHC.

Keyword(s): symmetry: local ; CERN LHC Coll ; spontaneous symmetry breaking ; baryon number ; leptophobic ; gauge boson ; two-photon ; signature ; anomaly ; mixing ; quark ; W W