Baryonic Higgs at the LHC

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 $\gamma \gamma$, $Z\gamma$, $ZZ$, and $WW$ 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.

20 pages, 9 figures; minor corrections, to appear in JHEP

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• Parton distributions for the LHC
• Search for high-mass diphoton resonances in proton-proton collisions at 13 TeV and combination with 8 TeV search
• How to save the WIMP: global analysis of a dark matter model with two s-channel mediators
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Cited by in corpus (8)

• Leptophobic Dark Matter and the Baryon Number Violation Scale
• Evaporation Barrier for Dark Matter in Celestial Bodies
• On Anomaly-Free Dark Matter Models
• Dijet and electroweak limits on a $Z^{\prime }$ boson coupled to quarks
• Dark Matter from Anomaly Cancellation at the LHC
• The Higgs and Leptophobic Force at the LHC
• Dark Matter Raining on DUNE and Other Large Volume Detectors
• Baryonic Higgs and Dark Matter