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Bulk U(1) messenger
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DOI：10.1016/S0370-2693(00)00812-1.png)
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Abstract
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We propose a new U(I) 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) similar or equal to 5 X 10(-4), is required fur a successful phenomenology. This result implies the compactification length L of the extra dimension to be L-1 similar or equal to 2 X 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. (C) 2000 Elsevier Science B.V. All rights reserved.
Keywords:
DYNAMICAL SUPERSYMMETRY BREAKING
SUPERGRAVITY
BOUNDARY
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