Generation of Universe Baryon Asymmetry and Breaking of Supersymmetry

2009 Fiscal Year Self-evaluation Report

• Project/Area Number: 19540270
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: The University of Tokyo
• Principal Investigator: YANAGIDA Tsutomu The University of Tokyo, 数物連携宇宙研究機構, 特任教授 (10125677)
• Project Period (FY): 2007 – 2009
• Keywords: 宇宙のバリオン数 / レプトン数生成 / 右巻きニュートリノ / 超対称性 / 超対称性の破れ

Research Abstract

本研究課題の目的は宇宙の物質数を説明するレプトジェネシス機構と無矛盾な超対称性の破れの模型を構築することである。その模型の候補に以下の2種類の模型が考えられる。
(1)グラビティーノの質量が16eV以下の模型。
(2)グラビティーノの質量が100GeV程度の模型。
本研究では上記の2種類の模型の構築を行う。

Research Products

• [Journal Article] Relaxing a constraint on the number of messengers in a low-scale gauge mediation (2010)
  • Author(s): Ryosuke Sato, Tsutomu Yanagida, Kazuya Yonekura
  • Journal Title: Physical Review D 81 Pages: 045003
  • Peer Reviewed
• [Journal Article] A test for light gravitino at the LHC (2009)
  • Author(s): Satoshi Shirai, Tsutomu Yanagida
  • Journal Title: Physics Letters B 680 Pages: 351-354
  • Peer Reviewed
• [Journal Article] Conformal supersymmetry breaking in vector-like gauge theories (2009)
  • Author(s): Ken-ichi Izawa, Fuminobu Takahahsi, Tsutomu Yanagida, Kazuya Yonekura
  • Journal Title: Physical Review D 80 Pages: 085017-1
  • Peer Reviewed
• [Journal Article] R-violating Decay of wino dark matter and electron/positron excesses in PAMELA/Fermi experiments (2009)
  • Author(s): Satoshi Shirai, Fuminobu Takahashi, Tsutomu Yanagida
  • Journal Title: Physics Letters B 680 Pages: 485-488
  • Peer Reviewed
• [Journal Article] Runaway Dynamics and supersymmetry breaking (2009)
  • Author(s): Ken-ichi Izawa, Fuminobu Takahashi, Tsutomu Yanagida, Kazuya Yonekura
  • Journal Title: Physics Letters B 677 Pages: 195-196
  • Peer Reviewed
• [Presentation] (2009)
  • Author(s): 柳田勉
  • Organizer: Dark Matter, PASCOS 2009(DESY研究所)
  • Place of Presentation: Hamburg
  • Year and Date: 2009-07-10