论文标题
从正向物理实验的深色光子上的敏感性
Sensitivities on dark photon from the Forward Physics Experiments
论文作者
论文摘要
Neutrino-electron scattering experiments can explore the potential presence of a light gauge boson $A'$ which arises from an additional $U(1)_{B-L}$ group, or a dark photon $A'$ which arises from a dark sector and has kinetic mixing with the SM hypercharge gauge field.我们通常称其为深色光子。在这项研究中，我们研究了深色光子对中微子 - 电子散射$νe^ - \rightArrowνe^ - $在新提出的远期物理实验（例如Faser $ν$，Faser $ \ nu2 $，snd@lhc@lhc and flare（10 ons））上的效果。我们将预期的灵敏度估算为$ u（1）_ {b-l} $量学耦合，以宽范围的深色光子质量$ m_ {a'} $。我们将提出的正向物理实验的敏感性与德克萨诺诺，Gemma，Borexino，LSN和Charm II以及NA64E实验的当前限制进行了比较。我们还扩展了计算，以在广泛的深色光子质量$ m_ {a'} $中获得动力学混合参数$ε$上的灵敏度。我们证明，在远期物理设施中，对于$ m_ {a'} <1 $ GEV的灵敏度并不能提高。
Neutrino-electron scattering experiments can explore the potential presence of a light gauge boson $A'$ which arises from an additional $U(1)_{B-L}$ group, or a dark photon $A'$ which arises from a dark sector and has kinetic mixing with the SM hypercharge gauge field. We generically call it a dark photon. In this study, we investigate the effect of the dark photon on neutrino-electron scattering $νe^-\rightarrowνe^-$ at the newly proposed forward physics experiments such as FASER$ν$, FASER$\nu2$, SND@LHC and FLArE(10 tons). We estimate the anticipated sensitivities to the $U(1)_{B-L}$ gauge coupling in a wide range of the dark photon mass $M_{A'}$. We compare the sensitivities of the proposed forward physics experiments with the current limits from TEXONO, GEMMA, BOREXINO, LSND, and CHARM II as well as NA64e experiments. We also extend the calculation to obtain the sensitivities on the kinetic mixing parameter $ε$ in a wide range of dark photon mass $M_{A'}$. We demonstrate that the sensitivities do not improve for $M_{A'} < 1 $ GeV at the Forward Physics Facilities.
