Minimal realization of right-handed gauge symmetry

Minimal realization of right-handed gauge symmetry
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右手规范对称性的最小实现

DOI:
10.1103/physrevd.97.015015
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发表时间:
2017
期刊:
影响因子:
5
通讯作者:
H. Okada
H. Okada
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Takaaki Nomura;H. Okada

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我们提出了一个具有$U(1)_R$的最小扩展规范对称模型,其中只有右手费米子在费米子扇区具有非零电荷。为了同时实现反常抵消和最小化,自然需要三个右手中微子,而标准模型希格斯必须在这种对称性下具有非零电荷。然后我们发现它的破缺标度($\Lambda$)受到标准模型中中性规范玻色子的精确测量的限制,因此,$O}$(10)TeV$\less sim\Lambda$。我们还讨论了它对新规范玻色子的可验证性,以及在大型强子对撞机和ILC等对撞机物理中,$U(1)_R$模型与$U(1){B-L}$模型的区别。
We propose a minimally extended gauge symmetry model with $U(1)_R$, where only the right-handed fermions have nonzero charges in the fermion sector. To achieve both anomaly cancellations and minimality, three right-handed neutrinos are naturally required, and the standard model Higgs has to have nonzero charge under this symmetry. Then we find that its breaking scale($\Lambda$) is restricted by precise measurement of neutral gauge boson in the standard model; therefore, ${\cal O}$(10) TeV$\lesssim \Lambda$. We also discuss its testability of the new gauge boson and discrimination of $U(1)_R$ model from $U(1)_{B-L}$ one at collider physics such as LHC and ILC.
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