论文标题
使用未标记的$ b^0_s \ rightarrow \ tilde {d}^{（*）0} ϕ $衰减的ckm角度$γ$敏感性
Study of CKM angle $γ$ sensitivity using flavor untagged $B^0_s\rightarrow \tilde{D}^{(*)0}ϕ$ decays
论文作者
论文摘要
从$ b^0_s \ rightarrow \ tilde {d}^{（*）0} 0} ϕ $衰减的敏感性研究，用于测量CKM角$γ$从$ b^0_s \ rightarrow \ tilde \ tilde {d}^{（*）0} ϕ $衰减，使用$ d $ n $ kk $和$ππ$，其中符号$ \ tilde {d}^0 $对应于$ d^0 $或$ {\ tilde {d}^0} $ meson。 LHCB实验被视为用例。 LHCB实验收集的$ PP $碰撞数据可以实现约8-19^{\ circ} $的统计不确定性。从2011年到2018年，LHCB实验收集的数据。对$γ$的敏感性应为$ 3-8^{\ circ} $的敏感性，在积累23 \ ivp $ pp $ collision数据之后，这是$ 3-8^{\ cigr 300〜fb $^{ - 1} $到2030年的下半年。精度取决于强参数$ r^{（*）} _ {b} $和$ {δ^{（*）} _ {b}} $，并与$γ$一起描述了$ b^0_s \ rightarrow \ rightarrow \ rightarrow \ rightarrow \ the $ decane的干扰。
A sensitivity study for the measurement of the CKM angle $γ$ from $B^0_s\rightarrow \tilde{D}^{(*)0}ϕ$ decays is performed using $D$ meson reconstructed in the quasi flavour-specific modes $Kπ$, $K3π$, $Kππ^0$, and \CP-eigenstate modes $KK$ and $ππ$, where the notation $\tilde{D}^0$ corresponds to a $D^0$ or a ${\tilde{D}^0}$ meson. The LHCb experiment is taken as a use case. A statistical uncertainty of about $8-19^{\circ}$ can be achieved with the $pp$ collision data collected by the LHCb experiment from year 2011 to 2018. The sensitivity to $γ$ should be of the order $3-8^{\circ}$ after accumulating 23\invfb of $pp$ collision data by 2025, while it is expected to further improve with 300~fb$^{-1}$ by the second half of the 2030 decade. The accuracy depends on the strong parameters $r^{(*)}_{B}$ and ${δ^{(*)}_{B}}$, describing, together with $γ$, the interference between the leading amplitudes of the $B^0_s\rightarrow \tilde{D}^{(*)0}ϕ$ decays.
