Diphoton channel at the LHC experiments to find a hint for a new heavy gauge boson
| Autor: | Subeom Kang, Hye-Sung Lee, Kunio Kaneta |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Physics
Nuclear and High Energy Physics Particle physics Gauge boson Large Hadron Collider 010308 nuclear & particles physics Physics beyond the Standard Model Scalar (mathematics) High Energy Physics::Phenomenology FOS: Physical sciences Astronomy and Astrophysics Scalar boson 01 natural sciences Atomic and Molecular Physics and Optics Standard Model law.invention High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) law 0103 physical sciences Grand Unified Theory 010306 general physics Collider |
| DOI: | 10.48550/arxiv.1512.09129 |
| Popis: | Recently there has been a huge interest in the diphoton excess around 750 GeV reported by both ATLAS and CMS collaborations, although the newest analysis with more statistics does not seem to support the excess. Nevertheless, the diphoton channel at the LHC experiments are a powerful tool to probe a new physics. One of the most natural explanations of a diphoton excess, if it occurs, could be a new scalar boson with exotic colored particles. In this setup, it would be legitimate to ask what is the role of this new scalar in nature. A heavy neutral gauge boson ($Z'$) is one of the traditional targets of the discovery at the collider experiments with numerous motivations. While the Landau-Yang theorem dictates the diphoton excess cannot be this spin-1 gauge boson, there is a strong correlation of a new heavy gauge boson and a new scalar boson which provides a mass to the gauge boson being at the same mass scale. In this paper, we point out a simple fact that a new scalar with a property similar to the recently highlighted 750 GeV would suggest an existence of a TeV scale $Z'$ gauge boson that might be within the reach of the LHC Run 2 experiments. We take a scenario of the well-motivated and popular gauged $B-L$ symmetry and require the gauge coupling unification to predict the mass and other properties of the $Z'$ and illustrate the discovery of the $Z'$ would occur during the LHC experiments. Comment: 26 pages, 5 figures, matching the published version |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|