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arXiv 1908.00065hep-phhep-th
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新物理对对撞机上$B+L$破坏的影响

Impact of new physics on $B+L$ violation at colliders

David G. Cerdeno, Peter Reimitz, Kazuki Sakurai, Carlos Tamarit

摘要:

在标准模型中,手征电弱反常预言了违反重子数($B$)和轻子数($L$)的非微扰相互作用。文献中已经充分讨论了这些过程在对撞机上的潜在可观察性,主要集中在伴随的玻色子发射的影响上,它通过质心能量的指数函数对截面做出贡献。相反,我们专注于在$SU(2)_L$下带电的奇异费米子的影响,它不仅可以在这些过程中发射,而且会影响截面的非指数贡献。估计后者使用瞬子技术,我们发现相当大的影响,这表明,如果$B+L$违反过程中看到的对撞机,他们可能涉及物理超越标准模型。

英文摘要:

In the Standard Model, chiral electroweak anomalies predict nonperturbative interactions that violate baryon ($B$) plus lepton number ($L$). The potential observability of these processes at colliders has been amply discussed in the literature, mostly focusing on the impact of the accompanying boson emission, which contributes to the cross sections through an exponential function of the center-of-mass energy. We focus instead on the impact of exotic fermions charged under $SU(2)_L$, which not only can be emitted in these processes, but also affect the non-exponential contributions to the cross-sections. Estimating the latter using instanton techniques, we find sizable effects that suggest that if $B+L$-violating processes are ever seen at colliders, they may involve physics beyond the Standard Model.

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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