Chargino Production via $Z^0$-Boson Decay in a Strong Electromagnetic Field

doi:10.1088/0256-307X/33/3/031301

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Abstract：In the framework of MSSM the probability of $Z^0$-boson decay to charginos in a strong electromagnetic field, $Z^0\rightarrow \chi ^{+} \chi ^{-}$, is analyzed. The method of calculations employs exact solutions of relativistic wave equations for charginos in a crossed electromagnetic field. Analytic expression for the decay width ${\it \Gamma}(Z^{0}\rightarrow \chi ^{+} \chi ^{-})$ is obtained at an arbitrary value of the parameter $\varkappa=e m_Z^{-3}\sqrt{-(F_{\mu\nu}q^\nu)^2}$, which characterizes the external-field strength $F_{\mu\nu}$ and $Z^0$-boson momentum $q^{\nu}$. The process $Z^0\rightarrow \chi ^{+} \chi ^{-}$ is forbidden in a vacuum for the case of relatively heavy charginos: $M_{\chi^{\pm}}>m_Z/2$. However, in an intense electromagnetic background this reaction could take place in the region of superstrong fields ($\varkappa>1$).

收稿日期: 2015-11-23 出版日期: 2016-03-31

:	13.38.Dg	(Decays of Z bosons)
	13.40.Hq	(Electromagnetic decays)
	14.80.Nb	(Neutralinos and charginos)

引用本文:

. [J]. 中国物理快报, 2016, 33(03): 31301-031301.
Alexander Kurilin. Chargino Production via $Z^0$-Boson Decay in a Strong Electromagnetic Field. Chin. Phys. Lett., 2016, 33(03): 31301-031301.

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https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/33/3/031301 或 https://cpl.iphy.ac.cn/CN/Y2016/V33/I03/31301