论文标题
$λ_b\rightarrowλ(\ topπ^ - )\ ell^+\ ell^ - $作为cp-violating新物理学的探针
$Λ_b\rightarrow Λ(\to p π^-) \ell^+\ell^-$ as probe of CP-violating New Physics
论文作者
论文摘要
我们研究了稀有衰减$λ_b\rightArrowλ(\ topπ^ - )\ ell^+ell^$ $ y^$ y^ - 在标准模型和新的物理场景中,最近$ b \ ell^ell^+ell^ell^ - $ ell^ - $ $ anmalies,我们调查了稀有衰减$λ_b\rightArrowλ(\ topπ^ - )\ ell^+ell^ - $的所有CP侵入不对称的尺寸。我们在独立于模型的有效理论框架中工作,并讨论CP不对称对新$ {o} _ {9,10} $操作员及其手性翻转的敏感性。我们发现,在新的物理场景中,许多CP不对称的大小可以达到几个百分比的水平,这与当前的$ b \ to s \ ell^+\ ell^ - $ $数据的水平为$1σ$。我们强调,这些CP不对称的测量可用于区分$ b \中的不同新物理场景,以s \ ell^+\ ell^ - $。
We investigate the possible sizes of all the CP-violating asymmetries offered by the angular distribution of rare decay $Λ_b\rightarrow Λ(\to p π^-) \ell^+\ell^-$ in the Standard Model and new physics scenarios motivated by the recent $b\to s \ell^+\ell^-$ anomalies. We work in a model-independent effective theory framework and discuss the sensitivity of CP asymmetries to new ${O}_{9,10}$ operators and their chirality flipped counterparts. We find that the size of many of the CP asymmetries can be at the level of a few percent in new physics scenarios consistent with current $b\to s\ell^+\ell^-$ data at a level of $1σ$. We emphasize that measurements of these CP asymmetries can be used to discriminate different new physics scenarios in $b\to s \ell^+\ell^-$.