photon parameter
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2021 ◽  
Vol 81 (5) ◽  
Author(s):  
Xiaorui Wong ◽  
Yongsheng Huang

AbstractThe dark photon is a new gauge boson which arises from an extra $$U'(1)$$ U ′ ( 1 ) gauge symmetry. In this paper, a novel dark photon production mechanism based on MeV-scale $$\gamma $$ γ –$$\gamma $$ γ collider is considered: $$\gamma \gamma \rightarrow \gamma A'$$ γ γ → γ A ′ . With the aid of PACKAGE-X, differential cross section of $$\gamma \gamma \rightarrow \gamma A'$$ γ γ → γ A ′ is obtained, as a function of the kinetic mixing parameter $$\varepsilon $$ ε and dark photon mass $$m_{A'}$$ m A ′ . Taking the light-by-light scattering as background, the constraints on the dark photon parameter space for different time intervals in a MeV-scale $$\gamma $$ γ –$$\gamma $$ γ collider are also given.





1991 ◽  
Vol 31 (3) ◽  
pp. 245-249
Author(s):  
K.P. Möllmann


1986 ◽  
Vol 26 (3) ◽  
pp. 155-166 ◽  
Author(s):  
O.M. Williams


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