We propose a new U(1) gauge interaction in the bulk in higher dimensional spacetime, which transmits supersymmetry-breaking effects on the hidden brane to the observable our brane. We find that rather small gauge coupling constant of U(1)_{ bulk}, $\alpha_{ bulk} \simeq 5 \times 10^{ -4}$, is required for a successful phenomenology. This result implies the compactification length $L$ of the extra dimension to be $L^{ -1} \simeq 2 \times 10^{ 15}GeV$ for (4+1)-dimensional spacetime. This large compactification length $L$ is a crucial ingredient to suppress unwanted flavor-changing neutral currents and hence our proposal is very consistent with the Randall-Sundrum brane-world scenario.
Categories: hep-ph