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首页> 外文期刊>Physics of atomic nuclei >Spin identification of graviton resonances in the process pp → e~+e~- + X at the Large Hadron Collider (LHC)
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Spin identification of graviton resonances in the process pp → e~+e~- + X at the Large Hadron Collider (LHC)

机译：大强子对撞机（LHC）的pp→e〜+ e〜-+ X过程中自重共振的自旋识别

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摘要

Prospects for discovering heavy graviton resonances in decays to an electron-positron pair and for identifying the nature of these resonances in the ATLAS experiment at the Large Hadron Collider (LHC) are investigated. Gravitons in the Randall-Sundrum model, which features extra spatial dimensions, are considered by way of example. A comparative analysis of effects of new different-spin heavy resonances, scalar [supersymmetric neutrino (sneutrino)], vector (new gauge Z′ boson), and tensor (graviton) ones, is performed in order to identify the graviton spin. An identification of gravitons is performed by using the integrated center-edge asymmetry. For LHC, the graviton discovery (identification) reach is found to be 2.1 TeV (1.2 TeV) and 3.9 TeV (2.9 TeV) at a confidence level of 5δ (95%) for the graviton coupling constants of k/M?_(Pl) = 0.01 and 0.1, respectively. This analysis is the most general, since, for the first time, it takes into account the possible existence of scalar resonances, which affects substantially quantitative estimates of the identification reach.
机译：研究了在大正强子对撞机（LHC）的ATLAS实验中发现衰变到电子-正电子对过程中重质子共振并确定这些共振的性质的前景。以Randall-Sundrum模型中的Graviton为例，它具有额外的空间尺寸。为了确定引力子自旋，对新的不同自旋重共振，标量[超对称中微子（sneutrino）]，矢量（新规范Z'玻色子）和张量（重力）的影响进行了比较分析。引力子的识别是通过使用集成的中心边缘不对称进行的。对于大型强子对撞机，在引力子耦合常数k / M？_（Pl ）分别为0.01和0.1。这种分析是最通用的，因为这是首次将标量共振的可能存在考虑在内，它可能会严重影响识别范围的定量估计。

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