CP Violation in ∧b → ∧l^＋l^- Decay in the Four-Generation Standard Model
CP Violation in ∧b → ∧l^＋l^- Decay in the Four-Generation Standard Model作者机构：Engineering Faculty Cyprus International University Via Mersin 10 Turkey Islamic Azad University Khalkhal Branch Valiasr St. Khalkhal Iran Department of Sciences Ardabil University of Medical Sciences Daneshgah St. Ardabil Iran Faculty of Physics University of Tabriz Tabriz 51664 Iran
出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)
年 卷 期：2010年第27卷第4期
页 面：63-66页
核心收录：
学科分类：07[理学] 070104[理学-应用数学] 070202[理学-粒子物理与原子核物理] 0701[理学-数学] 0702[理学-物理学]
摘 要：We present the first study of CP asymmetry in ∧b → ∧l^＋l^- decay when a new weak phase comes through the extension of three-generation standard model to the four-generation standard model. Taking ｜Vt′s^＊Vt′b｜ = 0.01, 0.02, 0.03 with phase {60° - 120°}, which is consistent with the b → sl^＋l^- rate and the Bs mixing parameter △mBs, we find out that CP asymmetry is quite sensitive to the existence of fourth generation. It can serve as a good tool to search for new physics effects, in particular, to search for the fourth generation quarks （t′, b′） via their indirect manifestations in loop diagrams.
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