Collider signatures of the SO(5) x U(1) gauge-Higgs unification

被引：14

作者：

Hosotani, Yutaka ^{[1
]}

Tanaka, Minoru ^{[1
]}

Uekusa, Nobuhiro ^{[1
]}

机构：

[1] Osaka Univ, Dept Phys, Osaka 5600043, Japan

来源：

PHYSICAL REVIEW D | 2011年 / 84卷 / 07期

关键词：

ELECTROWEAK SYMMETRY-BREAKING; COUPLINGS; DYNAMICS; MASS;

D O I：

10.1103/PhysRevD.84.075014

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Collider signatures of the SO(5) x U(1) gauge-Higgs unification model in the Randall-Sundrum warped space are explored. Gauge couplings of quarks and leptons receive small corrections from the fifth dimension whose effects are tested by the precision data. It is found that the forward-backward asymmetries in e(+)e(-) collisions on the Z pole are well explained in a wide range of the warp factor z(L), but the model is consistent with the branching fractions of Z decay only for large z(L) greater than or similar to 10(15). Kaluza-Klein (KK) spectra of gauge bosons, quarks, and leptons as well as gauge and Higgs couplings of low-lying KK excited states are determined. Right-handed quarks and leptons have larger couplings to the KK gauge bosons than left-handed ones. Production rates of Higgs bosons and KK states at the Tevatron, LHC, and International Linear Collider are evaluated. The first KK Z has a mass 1130 GeV with a width 422 GeV for z(L) = 10(15). The current limit on the Z' production at the Tevatron and LHC indicates z(L) > 10(15). A large effect of parity violation appears in the difference between the rapidity distributions of e(+) and e(-) in the decay of the first KK Z. The first KK gauge bosons decay into light and heavy quarks evenly.

引用

页数：22

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