Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-05-22
Phys.Lett.B487:140-144,2000
Physics
High Energy Physics
High Energy Physics - Phenomenology
9 pages, Latex
Scientific paper
10.1016/S0370-2693(00)00812-1
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.
Nomura Yasunori
Yanagida Takayuki
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