论文标题
在$ b $ -Meson中探测$ r $ parity违反巴里昂的腐烂
Probing $R$-parity violation in $B$-meson decays to a baryon and a light neutralino
论文作者
论文摘要
我们建议搜索$ b $ meson腐烂到BARYON，以及在Belle II实验中缺少能量，以使用GEV尺度最轻的Neutmenino $ {\tildeχ_1^0} $和$ R $ - Parity侵犯（RPV）探测超对称性。我们在有效现场理论的框架中对信号分支分数执行分析计算，其中单个非零RPV操作员$λ''_ {ij3} \ bar {u} _ {i}^c \ bar {d} _ {d} _ {j} _ {j} _ {j}^c \ bar {d} d} d} {d} _3^c $，其中$，$，使用SU（3）现象学Lagrangian方法对质子以及几种超子和诱人的重子来计算耐达的形式。由于中inino的衰变是运动学上的，在这种理论情况下抑制了CKM，因此它在检测器外衰减，并且在实验上仅作为缺失的能量而出现。我们在实验级别上详细详细介绍了分析技术，并估算了$ {b^+ \ \ p {\tildeχ_1^0}} $ search $ {b^+ \ to p {b^+ \ to p {b^+ \ to p {\tildeχ_1^0}} $ search $ search of $ b^+ \ to k^+ v to K^+ vbarν$。我们的最终灵敏度图显示了$λ''_ {113} $，而squark质量$ m _ {\ tilde {q}} $和$λ''_ {113}/m^2 _ {\ tilde {q}}} $ vers nutralino sups $ m _ _1我们发现，在Belle II的搜索可以探索$λ''_ {113}/m^2 _ {\ tilde {q}} $降至$ 10^{ - 8} $ gev $^{ - 2} $的订单，在KineMationally允许的$ _ {\ tildeububocte $ _ {\ tilde ulde ulde ulde undeuc_1^0} $差异中。我们还通过重新塑造被解释为$ {b^0 \λ^0 {\tildeχ_1^0}} $的现有搜索来获得$λ'''_ {123} $的当前限制，并评论有关$ {b^+ \ ttoσ^+ {\ tilde的{\ tilde tilde的= 0} $ {b^0} $ {b^0} $ {b^0} 0的搜索的评论{\tildeχ_1^0}} $，$ {b^+ \toλ_c^+ {\tildeχ_1^0}} $，以及$ {b^+ \ toξ_c^+ {\ tildequ_1^0}}} $。结束时，我们简要讨论了LHCB和BESIII实验的潜在搜索。
We propose a search for $B$ meson decays to a baryon plus missing energy at the Belle II experiment to probe supersymmetry with a GeV-scale lightest neutralino ${\tildeχ_1^0}$ and $R$-parity violation (RPV). We perform analytic computations of the signal branching fractions in the framework of effective field theory, with a single nonzero RPV operator $λ''_{ij3}\bar{U}_{i}^c\bar{D}_{j}^c\bar{D}_3^c$, where $i,j=1,2$. The hadronic form factors are calculated using an SU(3) phenomenological Lagrangian approach for the proton, as well as several hyperons and charmed baryons. Since the decay of the neutralino is kinematically and CKM suppressed in this theoretical scenario, it decays outside the detector and appears experimentally only as missing energy. We detail the analysis techniques at the experimental level and estimate the background in the ${B^+ \to p {\tildeχ_1^0}}$ search using published results for $B^+\to K^+ ν\barν$. Our final sensitivity plots are shown for both $λ''_{113}$ versus the squark mass $m_{\tilde{q}}$ and $λ''_{113}/m^2_{\tilde{q}}$ versus the neutralino mass $m_{\tildeχ_1^0}$. We find that the search at Belle II could probe $λ''_{113}/m^2_{\tilde{q}}$ down to the order of $10^{-8}$ GeV$^{-2}$ in the kinematically allowed $m_{\tildeχ_1^0}$ range. We also obtain current limits on $λ''_{123}$ by recasting an existing search interpreted as ${B^0 \to Λ^0 {\tildeχ_1^0}}$, and comment about searches for ${B^+ \to Σ^+ {\tildeχ_1^0}}$, ${B^0 \to Σ^0 {\tildeχ_1^0}}$, ${B^+ \to Λ_c^+ {\tildeχ_1^0}}$, and ${B^+ \to Ξ_c^+ {\tildeχ_1^0}}$. In closing, we briefly discuss potential searches at the LHCb and BESIII experiments.
