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arXiv 1606.07171hep-ph
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弯曲引力场中的KK引力子共振和级联衰变

KK graviton resonance and cascade decays in warped gravity

Barry M. Dillon, Chengcheng Han, Hyun Min Lee, Myeonghun Park

摘要:

我们考虑Kaluza-Klein(KK)引力子及其在光radion(额外维度的模)存在下的衰变,由于弯曲引力的经典标度不变性,它自然地出现在光中。由于KK引力子和放射子之间的额外维度存在相当大的波函数重叠,KK引力子可以很大程度上衰变为一对放射子,每个放射子衰变为一对准直光子或光子喷流。本文着重讨论了KK引力子抑制了与希格斯玻色子玻色子和费米子的耦合的情况,并讨论了光子喷注相关的参数空间中的光辐射子的边界。此外,我们追求的可能性区分的情况下,直接光子的贡献,在LHC运行2的光子的角分布。本文还讨论了KK引力子和镭子作为暗物质相互作用介质的作用、膜动力学项的扩展和全息复合Higgs模型。

英文摘要:

We consider the Kaluza-Klein (KK) graviton and its decays in the presence of the light radion, the modulus of extra dimension, appearing naturally light due to classical scale invariance in warped gravity. Due to the presence of a sizable wavefunction overlap in the extra dimension between the KK graviton and the radion, the KK graviton can decay largely into a pair of radions, each of which decays into a pair of collimated photons or photon-jets. Focusing on the setup where the KK graviton has suppressed couplings to the Higgs boson and fermions, we discuss the bounds on the light radion in the parameter space where the photon-jets are relevant. Moreover, we pursue the possibility of distinguishing the scenario from the case with direct photon contributions by the angular distributions of photons in the LHC Run 2. Roles of KK graviton and radion as mediators of dark matter interactions, extensions with brane kinetic terms and the model with a holographic composite Higgs are also addressed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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