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arXiv · hep-ph/0005211

Bulk U(1) Messenger

Yasunori Nomura·T. Yanagida
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Abstract

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}, $α_{bulk} \simeq 5 \times 10^{-4}$, 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.

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Yasunori Nomura, T. Yanagida. 2000-05-22. Bulk U(1) Messenger. https://doi.org/10.1016/s0370-2693(00)00812-1

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