论文标题
激动的研究$λ_\ mathrm {b}^0 $状态腐烂到$λ_\ mathrm {b}^0π^0π^+π^ - proton-proton Collisions in $ \ sqrt {s} = $ 13 tev
Study of excited $Λ_\mathrm{b}^0$ states decaying to $Λ_\mathrm{b}^0π^+π^-$ in proton-proton collisions at $\sqrt{s} =$ 13 TeV
论文作者
论文摘要
基于2016- 2018年收集的数据样本，对激发$λ_\ Mathrm {B}^0 $ Baryons进行了研究，其中CMS检测器在LHC的质子蛋白质胶合胶中的CMS检测器在13 tev的质子质量胶中，对应于130 fb $^$^{-1} $的集成亮度。存在四个激动的$λ_\ Mathrm {b}^0 $状态的存在：$λ_\ Mathrm {b} $（5912）$（5912）$^0 $，$λ_\ Mathrm {b} $（5920）$（5920）$^0 $，$λ_ $λ_\ mathrm {b} $（6152）$^0 $在$λ_\ mathrm {b}^0π^0π^+π^ - $质量谱中得到了确认，并测量了它们的质量。 $λ_\ Mathrm {B}^0π^+π^ - $质量分布在6040-6100 MEV的区域中表现出广泛的事件，其起源不能与当前数据相识别。
A study of excited $Λ_\mathrm{b}^0$ baryons is reported, based on a data sample collected in 2016-2018 with the CMS detector at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of up to 140 fb$^{-1}$. The existence of four excited $Λ_\mathrm{b}^0$ states: $Λ_\mathrm{b}$(5912)$^0$, $Λ_\mathrm{b}$(5920)$^0$, $Λ_\mathrm{b}$(6146)$^0$, and $Λ_\mathrm{b}$(6152)$^0$ in the $Λ_\mathrm{b}^0π^+π^-$ mass spectrum is confirmed, and their masses are measured. The $Λ_\mathrm{b}^0π^+π^-$ mass distribution exhibits a broad excess of events in the region of 6040-6100 MeV, whose origin cannot be discerned with the present data.
