Study of b-hadron to J/ψh⁺h⁻ decays

详细信息    查看全文

• 作者：Liming Zhang ; on behalf of the LHCb Collaboration
• 关键词：Standard Model ; Amplitude analysis ; HEQ ; B Lifetime ; Cabibbo-suppressed decay ; LHCb ; Scalar mesons
• 刊名：Nuclear and Particle Physics Proceedings
• 出版年：2016
• 出版时间：April-June 2016
• 年：2016
• 卷：273-275
• 期：Complete
• 页码：1398-1403
• 全文大小：342 K

文摘

Using data collected by the LHCb detector corresponding to an integrated luminosity of 3 fb⁻¹$3{\text{fb}}^{-1}$, several types of b-hadron to J/ψh⁺h⁻$J/\psi h^{+}{h}^{-}$ decays are studied. Reported are the most recent results including amplitude analyses of ${\bar{B}}_s^0$ and ${\bar{B}}^0\to J/\psi {\pi }^{+}{\pi }^{-}$ decays, precision measurement of lifetime ratio of ${\mathrm{\Lambda }}_b^0$ to ${\bar{B}}^0$ using ${\mathrm{\Lambda }}_b^0\to J/\psi p{K}^{-}$, and first observation of a Cabibbo-suppressed decay ${\mathrm{\Lambda }}_b^0\to J/\psi p{\pi }^{-}$. Studies of f₀(980)$f_0(980)$ and f₀(500)$f_0(500)$ substructure are also discussed in π⁺π⁻${\pi }^{+}{\pi }^{-}$ final states.