Dynamics of electroweak symmetry breaking and its application to cosmology

电弱对称性破缺动力学及其在宇宙学中的应用

• 批准号: 13135207
• 负责人: YOSHIMURA Motohiko
• 金额: $ 13.5万
• 依托单位: Okayama University (2004-2006)The University of Tokyo (2001-2003)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research on Priority Areas
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13135207/
• 关键词: cosmology; supersymmetry; neutrino; leptogenesis; gravitino; dark matter; inflation; extra dimension; レプトン生成; ビッグバン; 元素合成; 超対称性; 宇宙の暗黒エネルギー; 宇宙の暗黒物質; ヒッグスレス模型; 余剰次元; 密度ゆらぎ; カーバトンシナリオ; バリオン数生成; 初期宇宙; 電弱対称性の破れ; 宇宙の背景輻射; 加速器物理; 宇宙背景輻射

The head member of this project, M. Yoshimura, has launched a new investigation of how to determine the nature (Majorana vs Dirac) and the absolute magnitude and all mixing angles of neutrino mass matrix by means of new experimental technique. This method uses unstable atomic states and detects a neutrino pair emission, when they are irradiated by a high-quality laser with some tuning condition. The ultimate goal is to verify and elucidate the idea of the grand design of leptogenesis, which is based on the Majorana nature of neutrino and the seesaw mechanism of mass generation.Moroi has discussed effects of gravitino on big-bang nucleosynthesis. The result shows important constraint on the reheat temperature after inflation, and imposes a new challenge both to leptogenesis and baryogenesis.Hisano studied, and greatly refined computation of, dark matter detection in cases of the neutralino dark matter.Tanabashi studied the structure of the electroweak symmetry breaking in TeV scale extra dimension models.

该项目的负责人M. Yoshimura等人开展了一项新的研究，即如何利用新的实验技术确定中微子质量矩阵的性质（Majorana vs Dirac）、绝对大小和所有混合角。该方法利用不稳定的原子态，当它们被具有一定调谐条件的高质量激光照射时，检测中微子对发射。Moroi的最终目标是验证和阐明基于中微子的Majorana性质和质量产生的跷跷板机制的轻子起源的大设计思想。Moroi讨论了引力子对大爆炸核合成的影响。这一结果对暴胀后的再热温度具有重要的约束作用，对轻子生成和重子生成都提出了新的挑战。久野研究了在中性伴子暗物质的情况下对暗物质的探测，并大大改进了计算。田桥研究了TeV尺度额外维度模型中的电弱对称性破缺结构。

项目成果

J.R.Ellis, J.Hisano, M.Radidal, Y.Shimizu: "A NEW PARAMETRIZATION OF THE SEESAW MECHANISM AND APPLICATIONS IN SUPERSYMMETRIC MODELS"Phys.Rev.. D66. 115013 (2002)

J.R.Ellis、J.Hisano、M.Radidal、Y.Shimizu：“跷跷板机构的新参数化及其在超对称模型中的应用”Phys.Rev..D66。

Takeo Moroi, Tomo Takahashi: "FFECTS OF COSMOLOGICAL MODULI FIELDS ON COSMIC MICROWAVE BACKGROUND"Phys. Lett.. B522. 215-221 (2001)

Takeo Moroi、Tomo Takahashi：“宇宙学模场对宇宙微波背景的影响”Phys。

Universal non-oblique corrections in higgsless models and beyound

无希格斯模型及其他模型中的通用非倾斜校正

• 发表时间: 2004
• 期刊: Phys.Lett. B603
• 作者: Chivukula;Simmons;He;Kurachi;Tanabash
• 通讯作者: Tanabash

Hadoronic EDM Constraints on Orbifold GUTS

Orbifold GUTS 上的 Hadoronic EDM 约束

• 发表时间: 2005
• 期刊: Phys.Lett. B624
• 作者: J.Hisano;M.Kakizaki et al.
• 通讯作者: M.Kakizaki et al.

J.Hisano, S.Matsumoto, M.M.Nojiri: "Explosive dark matter annihilation"Phys.Rev.Lett.. 92. 031303 (2004)

J.Hisano、S.Matsumoto、M.M.Nojiri：“爆炸性暗物质湮灭”Phys.Rev.Lett.. 92. 031303 (2004)