New physics hints in 𝐵 decays and collider outlook

Pramana

George W S Hou1¹ 

[1] Department of Physics, National Taiwan University, Taipei, Taiwan 10617, Republic of China$$

关键词: 𝐵 physics;    flavor;    CP violation;    beyond Standard Model;    rare decays;    super-symmetry;    fourth generation;    collider.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

There are currently two hints for new physics involving CP violation in 𝑏 → 𝑠 transitions: 𝛥 𝑆 ≡ 𝑆𝑓 - 𝑆𝐽/𝜙 𝐾 ≠ 0, and difference in direct CP asymmetry $Delta A_{Kpi} equiv A_{K^{+}pi^{0}} - A_{K^{+}pi} eq 0$. We explore the two scenarious with a large and unique new CP phase in 𝑏 ← 𝑠 tansitions. Motivated by 𝛥 𝑆 ≠ 0, we update on the right-handed strange-beauty squark $ilde{sb}_{1R}$ at TeV scale. Motivated by 𝛥 𝐴𝐾𝜋 ≠ 0, we explore sequential fourth generation 𝑡′ and 𝑏′ quarks. Both scenarious can survive constraints such as SM level 𝑏 → 𝑠𝛾, 𝑠ℓℓ and 𝐵s mixing, and predict sizable CP violation in 𝐵s mixing. The fourth generation picture predicts sizable 𝐾L → 𝜋0 𝜈𝜈. Direct search for $ilde{sb}_{R}$, 𝑏′ and 𝑡′ at hadronic colliders, such as Tevatron Run II and LHC, can complement further CP violation studies at these machines, as well as at the future Super 𝐵 factory.

【 授权许可】

Unknown