arXiv 2012.098822020-12hep-phhep-exnucl-th

在对撞机上探讨Weinberg算子

Probing the Weinberg Operator at Colliders

Benjamin Fuks, Jonas Neundorf, Krisztian Peters, Richard Ruiz, Matthias Saimpert

备注：: Journal version. 9 pages including an extended technical appendix; 4 figures; 4 tables; UFO models available from https://feynrules.irmp.ucl.ac.be/wiki/SMWeinberg
发表信息：: Phys. Rev. D 103, 115014 (2021)
DOI：: 10.1103/PhysRevD.103.115014

摘要：

出于对核实验中$0νββ$衰变的研究和对$d\geq7$维轻子数破坏的对撞机探测的动机，我们在LHC上使用非共振签名$pp\to \ell^\pm \ell'^{\pm} j j$研究了对$d=5$ Weinberg算子的敏感性.我们开发了一个处方的运营商，适用于碰撞和衰变，并专注于$\ell\ell'=μμ$通道，这是超出了核衰变的范围。对于威尔逊系数$C^{μμ}_5=1$，可以用$\mathcal{L}=300~{\rm fb}^{-1}~(3~{\rm ab}^{-1})$探测到$Λ\sim 8.3~(11)$ ~TeV的量级。这转化为一个有效的$μμ$马约拉纳质量的$\vert m_{μμ}\vert\sim7.3~(5.4)$ ~GeV，并建立了一个路线图，测试温伯格运营商在加速器。

英文摘要：

Motivated by searches for $0νββ$ decay in nuclear experiments and collider probes of lepton number violation at dimension $d\geq7$, we investigate the sensitivity to the $d=5$ Weinberg operator using the non-resonant signature $pp\to \ell^\pm \ell'^{\pm} j j$ at the LHC. We develop a prescription for the operator that is applicable in collisions and decays, and focus on the $\ell\ell'=μμ$ channel, which is beyond the reach of nuclear decays. For a Wilson coefficient $C^{μμ}_5=1$, scales as heavy as $Λ\sim 8.3~(11)$~TeV can be probed with $\mathcal{L}=300~{\rm fb}^{-1}~(3~{\rm ab}^{-1})$. This translates to an effective $μμ$ Majorana mass of $\vert m_{μμ}\vert\sim7.3~(5.4)$~GeV, and establishes a road map for testing the Weinberg operator at accelerators.

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摘要：

英文摘要：

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