论文标题
$ b \toλ\ bar p m $衰减的角度不对称
Angular asymmetries in $B\toΛ\bar p M$ decays
论文作者
论文摘要
$ \ bar b^0 \至λ\ barpπ^+$的前向后角不对称（$ {\ cal a} _ {fb} $）在$ -30 \％$ $ $ -50 \ $ -50 \％\％$ $的范围内提出了实验价值。在我们的研究中，我们发现$ {\ cal a} _ {fb} [\ bar b^0 \toλ\ barpπ^+（b^ - \toλ\ barpπ^0）] $可以与$（ - 14.6^{+0.9}此外，我们提出$ {\ cal a} _ {fb} [\ bar b^0 \toλ\ bar pρ^+（b^ - \toλ\ barpρ^0）] =（4.1^{+2.8} _ { - 0.7} _ { - 0.7} $ b \ to {\ bf b \ bar b'} m $衰减。而$ {\ cal a} _ {fb}（b \toλ\ bar p m）$表示是由较少研究的时间层研究的较少研究的重态形式引起的角相关性，但LHCB和Belle〜I ii能够进行实验性检查。
The forward-backward angular asymmetry (${\cal A}_{FB}$) for $\bar B^0\to Λ\bar pπ^+$ measured by Belle has presented an experimental value in the range of $-30\%$ to $-50\%$. In our study, we find that ${\cal A}_{FB}[\bar B^0\toΛ\bar p π^+(B^-\to Λ\bar pπ^0)]$ can be as large as $(-14.6^{+0.9}_{-1.5}\pm 6.9)\%$. In addition, we present ${\cal A}_{FB}[\bar B^0\toΛ\bar p ρ^+(B^-\to Λ\bar pρ^0)] =(4.1^{+2.8}_{-0.7}\pm 2.0)\%$ as the first prediction involving a vector meson in the charmless $B\to{\bf B\bar B'}M$ decays. While ${\cal A}_{FB}(B\toΛ\bar p M)$ indicates an angular correlation caused by the rarely studied baryonic form factors in the timelike region, LHCb and Belle~II are capable of performing experimental examinations.
