SN1987A constraints to BSM models with extra neutral bosons near the trapping regime: $U(1{)}_{L_{\hat{I}}¼-L_{\ddot{I}}„}$ model as an illustrative example

Kwang-Chang Lai, Chun Sing Jason Leung, Guey-Lin Lin

New physics beyond the Standard Model (BSM) with an extra neutral boson can be constrained from the observation of SN1987A, since the production of this neutral boson in a supernov…