Atomki anomaly in gauged U(1)(R) symmetric model

Seto, Osamu; Shimomura, Takashi

Journal of High Energy Physics, 2021, 2021(4), 25

Permalink : https://hdl.handle.net/2115/81719

このアイテムのアクセス数:521件（2026-08-18 17:52 集計）

ファイル	フォーマット	サイズ	閲覧回数	説明
https://doi.org/10.1007/JHEP04(2021)025			18

アクセス権	open access
URI	https://hdl.handle.net/2115/81719
タイトル	Atomki anomaly in gauged U(1)(R) symmetric model
著者	e-Rad_Researcher 40547741 著者名 Seto, Osamu
著者	e-Rad_Researcher 00447278 著者名 Shimomura, Takashi
言語	英語
キーワード	Beyond Standard Model
キーワード	Gauge Symmetry
発行日	2021-04-02
出版者	Springer
収録物名	Journal of High Energy Physics
巻(号)	2021(4)
ページ	25
抄録	The Atomki collaboration has reported that unexpected excesses have been observed in the rare decays of Beryllium nucleus. It is claimed that such excesses can suggest the existence of a new boson, called X, with the mass of about 17 MeV. To solve the Atomki anomaly, we consider a model with gauged U(1)(R) symmetry and identify the new gauge boson with the X boson. We also introduce two SU(2) doublet Higgs bosons and one singlet Higgs boson, and discuss a very stringent constraint from neutrino-electron scattering. It is found that the U(1)(R) charges of the doublet scalars are determined to evade the constraint. In the end, we find the parameter region in which the Atomki signal and all experimental constraints can be simultaneously satisfied.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
PISSN	1029-8479
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1007/JHEP04(2021)025