论文标题
包含$ b \ to \ {u，c \} \，\ ell^ - \，\barν_\ ell $模式：偏振/不铝$λ_b$
Inclusive $b \to \{u, c\} \, \ell^- \, \barν_\ell$ modes: polarized/unpolarized $Λ_b$
论文作者
论文摘要
越来越多的风味异常激发了对与观察到的紧张局势相似的新过程的调查。除了标准模型之外，有必要确定对物理敏感的可观察物。随后的分析涉及通过$ \ Mathcal {o}（1 / m_b^3）$和以$α_s$的领先顺序计算出的夸大夸克膨胀的两极分化美味重子。已经考虑了新的物理交互，将标准模型$ b \扩展到u \，\ ell \，\barν_\ ell $ low-Energy hamiltonian，其中$ u = \ {c，u \} $和$ \ ell = el = \ ell = \ el = \ ell = \ {e，μ，μ，μ，τ\} $，包括$ d $ d $ d $ d $ d $ d $ d = 6 $ deptors。在可以考虑的可能观察到的可能性中，取决于腐烂的重子的旋转非常吸引人，可以考虑未来设施（例如FCC-EE）的物理计划。
The increasing number of flavour anomalies motivates the investigation of new processes where tensions similar to the observed ones may emerge. It is necessary to identify observables sensitive to physics beyond the Standard Model. The analysis which follows concerns the inclusive semileptonic decays of polarized beauty baryons, computed through the Heavy Quark Expansion at $\mathcal{O}(1 / m_b^3)$ and at the leading order in $α_s$. New Physics interactions have been taken into account, extending the Standard Model $b \to U \, \ell \, \barν_\ell$ low-energy Hamiltonian, where $U = \{c, u\}$ and $\ell = \{e, μ, τ\}$, including the full set of $D = 6$ operators with left-handed neutrinos. Among the possible observables one can consider, the ones depending on the spin of the decaying baryon are very appealing and can be considered for physics programmes of future facilities, such as FCC-ee.
