Direct-transmission models of dynamical supersymmetry breaking
Direct-transmission models of dynamical supersymmetry breaking
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DOI：
10.1103/physrevd.56.2886
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发表时间：
1997-05
影响因子：
5
通讯作者：
K. Izawa;Yasunori Nomura;K. Tobe;T. Yanagida
中科院分区：
文献类型：
--
作者：
K. Izawa;Yasunori Nomura;K. Tobe;T. Yanagida
We systematically construct gauge-mediated supersymmetry- (SUSY-) breaking models with direct transmission of SUSY-breaking effects to the standard-model sector. We obtain a natural model with the gravitino mass m{sub 3/2} smaller than 1 keV as required from the standard cosmology. If all Yukawa coupling constants are of order one, the SUSY-breaking scale m{sub SUSY} transmitted into the standard-model sector is given by m{sub SUSY}{approx_equal}0.1({alpha}{sub i}/4{pi}){Lambda} where {Lambda} is the original dynamical SUSY-breaking scale. Imposing m{sub SUSY}{approx_equal}(10{sup 2}{endash}10{sup 3}) GeV, we get {Lambda}{approx_equal}(10{sup 5}{endash}10{sup 6}) GeV, which yields the gravitino mass m{sub 3/2}{approx_equal}(10{sup {minus}2}{endash}1) keV. {copyright} {ital 1997} {ital The American Physical Society}
We systematically construct gauge-mediated supersymmetry- (SUSY-) breaking models with direct transmission of SUSY-breaking effects to the standard-model sector. We obtain a natural model with the gravitino mass m{sub 3/2} smaller than 1 keV as required from the standard cosmology. If all Yukawa coupling constants are of order one, the SUSY-breaking scale m{sub SUSY} transmitted into the standard-model sector is given by m{sub SUSY}{approx_equal}0.1({alpha}{sub i}/4{pi}){Lambda} where {Lambda} is the original dynamical SUSY-breaking scale. Imposing m{sub SUSY}{approx_equal}(10{sup 2}{endash}10{sup 3}) GeV, we get {Lambda}{approx_equal}(10{sup 5}{endash}10{sup 6}) GeV, which yields the gravitino mass m{sub 3/2}{approx_equal}(10{sup {minus}2}{endash}1) keV. {copyright} {ital 1997} {ital The American Physical Society}