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Kunio Kaneta
순수물리이론 연구단
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Diphoton channel at the LHC experiments to find a hint for a new heavy gauge boson

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Title
Diphoton channel at the LHC experiments to find a hint for a new heavy gauge boson
Author(s)
Kunio Kaneta; Subeom Kang; Hye-Sung Lee
Publication Date
2016-09
Journal
INTERNATIONAL JOURNAL OF MODERN PHYSICS A, v.31, no.27, pp.1650159 -
Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
Abstract
Recently there has been a buge interest in the diphoton excess around 750 GeV reported by both ATLAS and CMS collaborations, although the newest analysis with more statis-tics 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 explana-tions 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 dis-covery 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 th the recently highlighted 750GeV 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 during the LHC experiments. (c) World Scientific Publishing Company
URI
https://pr.ibs.re.kr/handle/8788114/3162
ISSN
0217-751X
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > Journal Papers (저널논문)
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