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Kang, JH; Langacker, P; Li, TJ; Liu, T; Kang, JH (reprint author), Inst Adv Study, Sch Nat Sci, Einstein Dr, Princeton, NJ 08540 USA.
Electroweak baryogenesis, CDM and anomaly-free supersymmetric U(1)
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
语种英语
关键词Colliding Vacuum Bubbles Number Non-conservation Weak Phase-transition Standard Model Gravitational-radiation Symmetry-breaking Baryon-number Gauge Bosons Nonperturbative Analysis Cosmic Strings
摘要We construct an anomaly-free supersymmetric U(1)' model with a secluded U(1)'-breaking sector (sMSSM), with E(6) embedding. Then we systematically study electroweak baryogenesis (EWBG) driven by spontaneous CP-violation (SCPV), using the sMSSM as an example. Unlike the Minimal Supersymmetric Standard Model (MSSM), CP violation in the Higgs sector can be both spontaneous and explicit in the sMSSM, even at tree level. These new CP sources do not introduce significant new contributions to electric dipole moments of the electron and neutron. Novel features are found in the EWBG driven by SCPV (significantly different from the ones in the MSSM). First, due to the space-dependence of the relevant CP phases, the CP-violating stop and chargino currents do not require a variation of tan beta in the bubble wall to have a non-trivial structure at the lowest order of Higgs insertion. Second, there exists a new type of CP-violating current at the leading order. Because of this, in addition to leptons and charginos, top quarks and top squarks can also play a significant role in the EWBG. Numerical results show that the baryon asymmetry is large enough to explain the cosmological observation today. We illustrate that EWBG and neutralino cold dark matter can be accommodated in the same framework, i.e., there exists parameter space where a strong enough first order EWPT, large CP phase variations across the bubble wall, a reasonable baryon asymmetry as well as an acceptable neutralino dark matter relic density can be achieved simultaneously.
2011
ISSN1126-6708
期号4页码:97
学科领域Physics
收录类别SCI
项目资助者IBM; NSF [PHY-0503584]; Natural Science Foundation of China [10821504]; DOE [DE-FG03-95-Er-40917, DE-FG02-90ER40560]; Mitchell-Heep Chair in High Energy Physics; Fermi-McCormick Fellowship ; IBM; NSF [PHY-0503584]; Natural Science Foundation of China [10821504]; DOE [DE-FG03-95-Er-40917, DE-FG02-90ER40560]; Mitchell-Heep Chair in High Energy Physics; Fermi-McCormick Fellowship ; IBM; NSF [PHY-0503584]; Natural Science Foundation of China [10821504]; DOE [DE-FG03-95-Er-40917, DE-FG02-90ER40560]; Mitchell-Heep Chair in High Energy Physics; Fermi-McCormick Fellowship ; IBM; NSF [PHY-0503584]; Natural Science Foundation of China [10821504]; DOE [DE-FG03-95-Er-40917, DE-FG02-90ER40560]; Mitchell-Heep Chair in High Energy Physics; Fermi-McCormick Fellowship
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/14381
专题理论物理所科研产出_SCI论文
通讯作者Kang, JH (reprint author), Inst Adv Study, Sch Nat Sci, Einstein Dr, Princeton, NJ 08540 USA.
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Kang, JH,Langacker, P,Li, TJ,et al. Electroweak baryogenesis, CDM and anomaly-free supersymmetric U(1)[J]. JOURNAL OF HIGH ENERGY PHYSICS,2011(4):97.
APA Kang, JH,Langacker, P,Li, TJ,Liu, T,&Kang, JH .(2011).Electroweak baryogenesis, CDM and anomaly-free supersymmetric U(1).JOURNAL OF HIGH ENERGY PHYSICS(4),97.
MLA Kang, JH,et al."Electroweak baryogenesis, CDM and anomaly-free supersymmetric U(1)".JOURNAL OF HIGH ENERGY PHYSICS .4(2011):97.
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