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arXiv 1702.02830hep-ph
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LHC上可能的双光子共振的求和规则约束

Sum-rule constraints on possible diphoton resonances at LHC

P. Roig, J. J. Sanz-Cillero

摘要:

通过对真实无质量规范玻色子$V$(如光子或胶子)的前向散射振幅$V(k,λ) V(k'λ')\to V(k,λ) V(k',λ')$的研究,得到了一个求和规则,该规则可用于研究LHC $γγ$通道中标准模型以外的信号。求和规则只依赖于一般性质,如解析性、么正性和交叉性。我们使用现在掩埋的750 GeV双光子共振作为一个案例的研究,以验证的约束条件,前向求和规则需要任何新的物理候选人。在大的$γγ$或$gg$部分宽度的情况下,在我们的750 GeV分析中为10 GeV的量级,人们发现具有自旋$J_R=2$和更高自旋的无限状态塔必须最终并入超越标准模型理论,以满足求和规则。我们希望这些技术可能是有用的,在未来的双光子搜索在大型强子对撞机和未来的对撞机。

英文摘要:

The study of the forward scattering amplitude $V(k,λ) V(k'λ')\to V(k,λ) V(k',λ')$ of real massless gauge bosons $V$, e.g. photons or gluons, leads to a sum-rule that can be used to investigate beyond the Standard Model signals at LHC in the $γγ$ channel. The sum-rule only relies on general properties such as analyticity, unitarity and crossing. We use the now buried 750 GeV diphoton resonance as a case of study to exemplify the constraints that the forward sum-rule requires to any new physics candidate. In the case of a large $γγ$ or $gg$ partial width, of the order of 10 GeV in our 750 GeV analysis, one finds that an infinite tower of states with spin $J_R=2$ and higher must be ultimately incorporated to the beyond Standard Model theory in order to fulfill the sum-rule. We expect these techniques may be useful in next diphoton searches at LHC and future colliders.

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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