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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Colorphilic spin-2 resonances in the LHC dijet channel
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Colorphilic spin-2 resonances in the LHC dijet channel

机译：LHC Dijet通道中的色盲旋转2共振

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摘要

Experiments at the LHC may yet discover a dijet resonance indicative of beyond the standard model (BSM) physics. In this case, the question becomes: what BSM theories are consistent with the unexpected resonance? One possibility would be a spin-2 object called the 'colorphilic graviton'-a spin-2 color-singlet particle which couples exclusively to the quark and gluon stress-energy tensors. We assess the possibility of this state's discovery in the dijet channel as an s-channel resonance, and report the regions of parameter space where colorphilic gravitons have not yet been excluded by LHC-13 data but still may be discovered in the dijet channel at LHC-14 for integrated luminosities of 0.3, 1, and 3 ab(-1). We then delineate which of those regions remain accessible to future collider searches, once one accounts for applicability of the narrow-width approximation, mass resolution of the detector, and self-consistency according to treelevel partial-wave unitarity. We discover that-despite the strong constraints unitarity imposes on collider searches-the colorphilic graviton remains potentially discoverable in the LHC dijet channel. A means of investigation would be to apply the color discriminant variable, a dimensionless combination of quantities (production cross-section, total decay width, and invariant mass) that can be quickly measured after the discovery of a dijet resonance. Previous publications have demonstrated the color discriminant variable's utility when applied to theories containing vector bosons (colorons, Z'), excited quarks, and diquarks. We extend this analysis to the case of the colorphilic graviton by applying the color discriminant variable to the appropriate region of parameter space. We conclude that resolvable, discoverable dijet resonances consistent with colorphilic gravitons span a narrower range of masses than those consistent with leptophobic Z' models, and can be distinguished from those originating from coloron, excited quark, and diquar
机译：LHC的实验尚未发现指示标准模型（BSM）物理学的Dijet共振。在这种情况下，问题变成：BSM理论与意外共振一致？一种可能是一个称为“颜色格子的旋转2个颜色单粒子的旋转2对象，其专门耦合到夸克和胶合胁迫 - 能量张量。我们评估该状态在Dijet信道中发现的可能性作为S信道共振，并报告参数空间的区域，其中Corlphilic Gravitons尚未被LHC-13数据排除，但仍可能在LHC的Dijet频道中发现-14用于0.3,1和3 AB（-1）的集成光度。然后，我们将未来的撞机搜索界定了哪些区域，一旦一个帐户占窄宽近似，探测器的质量分辨率和自我一致性的适用性，以及根据套管部分波统一的贡献。我们发现 - 尽管强大的限制性统计资金施加在撞机中，Colorphilic Graviton在LHC Dijet沟道中仍然存在。一种调查方法是应用颜色判别变量，量度的无量纲（生产横截面，总衰减宽度和不变质量），在发现Dijet共振之后可以快速测量。以前的出版物已经证明了当应用于含有载体玻色子（Colorons，Z'）的理论时的颜色判别变量的效用，激励夸克和探测器。通过将颜色判别变量施加到适当的参数空间区域来将该分析延伸到色盲墓穴的情况。我们得出结论，可解析的，可发现的Dijet共振与色翼素重征一致的共振涵盖比与醇Z'模型一致的群体较窄的群体范围，并且可以与源自Claron，兴奋夸克和岛的那些区别

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