New physics and tau g?2 using LHC heavy ion collisions

Lydia Beresford; Jesse Liu

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New physics and tau g?2 using LHC heavy ion collisions

机译：新物理和TAU G？2使用LHC重离子碰撞

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The anomalous magnetic moment of the tau lepton a τ = ( g τ ? 2 ) / 2 strikingly evades measurement but is highly sensitive to new physics such as compositeness or supersymmetry. We propose using ultraperipheral heavy ion collisions at the LHC to probe modified magnetic δ a τ and electric dipole moments δ d τ . We design a suite of analyses with signatures comprising one electron/muon plus track(s), leveraging the exceptionally clean photon fusion γ γ → τ τ events to reconstruct both leptonic and hadronic tau decays sensitive to δ a τ , δ d τ . Assuming 10% systematic uncertainties, the current 2 ? ? nb ? 1 lead-lead dataset could already provide constraints of ? 0.0080 < a τ < 0.0046 at 68%?C.L. This surpasses 15-year-old lepton collider precision by a factor of 3 while opening novel avenues to new physics.

机译：Tau Lepton的异常磁矩Aτ=（gτ≤2）/ 2惊人的蒸发测量，但对新物理学（例如合成或超对称）高度敏感。我们建议在LHC处使用超时的重离子碰撞至探针改进的磁δaτ和电偶极矩Δdτ。我们设计了一套具有包括一个电子/ muOn加轨道的签名的分析套件，利用了异常清洁的光子融合γ→ττ事件来重建敏感的Leptonic和Hadronic Tau衰减对δaτ，Δdτ的衰减。假设有10％的系统不确定性，目前2？还 NB？ 1个引线数据集可能已经提供了约束？ 0.0080

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《Physical review, D》 |2020年第11期|共12页
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Lydia Beresford; Jesse Liu;
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1. Jet physics in heavy-ion collisions at the LHC with the ALICE detector [J] . Morsch A Journal of Physics, G. Nuclear and Particle Physics: An Institute of Physics Journal . 2005,第4期

机译：使用ALICE探测器在LHC发生重离子碰撞时的喷射物理学
2. A fixed-target programme at the LHC for heavy-ion, hadron, spin and astroparticle physics: AFTER@LHC [J] . Kikola D., Brodsky S. J., Cavoto G., Nuclear Physics, A: Journal Devoted to the Experimental Study of the Fundamental Constituents of Matter and Their Actions . 2019,第期

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机译：在大型强子对撞机的ALICE中重离子物理学和天体粒子物理学的最新研究成果回顾
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机译：LHC在超时的重离子碰撞中的物理机会
5. Charged Particle Multiplicity and Open Heavy Flavor Physics in Relativistic Heavy Ion Collisions at the LHC [D] . Chen, Yujiao 2013

机译：大型强子对撞机相对论重离子碰撞中的带电粒子多重性和开放重味物理
6. Heavy-flavour and quarkonium production in the LHC era: from proton–proton to heavy-ion collisions [O] . A. Andronic, F. Arleo, R. Arnaldi, -1

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7. Charged Particle Multiplicity and Open Heavy Flavor Physics in Relativistic Heavy Ion Collisions at the LHC [O] . Chen Yujiao 2013

机译：大型强子对撞机相对论重离子碰撞中的带电粒子多重性和开放重味物理

New physics and tau g?2 using LHC heavy ion collisions

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