SuperB项目

接收加速器中微子束的South Pole新探测器的要求

Requirements for a New Detector at the South Pole Receiving an Accelerator Neutrino Beam

最近有人考虑将IceCube探测器阵列中的光电倍增管密度增加到DeepCore之外，这将导致更低的探测阈值和用于中微子探测的巨大基准质量。这一举措被称为“冰立方下一代阶段升级”（PINGU）。我们讨论了从北半球的一个主要加速器实验室的中微子束发送到这样的探测器的可能性。这样的实验将是独一无二的，因为它将是唯一一个基线穿过地核的中微子束。我们研究了探测器的β光束，中微子工厂光束，和超级光束的要求，在那里我们考虑的情况下，小theta_13和大theta_13，建议由最近的T2 K和双π z结果。我们说明，味道干净的β光束最适合这样的检测器的要求，特别是，PINGU可以取代魔术基线检测器的小值θ_13-即使在没有任何能量分辨率的能力。然而，对于大θ_13，如果受到CERN-SPS的限制，单基线β束实验无法竞争。对于中微子工厂，由于探测器中丢失电荷识别的可能性，需要非常好的能量分辨率。如果这一点能够实现，特别是一个不受τ污染的低能中微子工厂，可能是大θ_13的一个有趣的选择。对于超级束，我们使用LBNE束作为参考，电子中微子味识别和统计是两个主要的限制。最后，我们证明了，至少在原则上，中微子工厂和超级束可以测量地核的密度，当sin ^2 2 θ_13大于0.01时，可以达到亚百分之一的水平。

中微子工厂中非标准相互作用与非幺正轻子味混合

Non-standard interactions versus non-unitary lepton flavor mixing at a neutrino factory

重介质对中微子振荡的影响通常用非标准四费米子相互作用（NSIs）或非么正性（NU）来描述。我们主要研究不产生荷轻子味破坏的轻子六维有效算符。这些运营商导致中微子生产，传播和检测非标准效应之间的特定相关性。我们指出，实际上，这些NSI和NU从现象学上导致了中微子工厂非常相似的效应，但其根本原因完全不同。我们讨论了在这种情况下，参数和概率是如何相关的，并比较了灵敏度。我们表明，在原则上，可以区分的NSI和NU足够大的影响在$μ$ - $τ$ -扇区的非标准效应的例子，这基本上对应于标量和费米子之间的区分作为重介质的领先顺序的效果。然而，我们发现，在超光束附近的检测器可以提供非常协同的信息，因为源和物质NSIs之间的相关性被打破强子中微子生产，而NU是一个基本的影响，目前在任何实验。

$e^+e^-$ 希格斯工厂项目的现状

Status of $e^+e^-$ Higgs Factory Projects

本文梳理了粒子物理界优先级最高的下一代正负电子希格斯工厂的物理目标，综述了各类拟建方案的现状，对比了环形与直线方案的特点，并介绍了关键技术、运行场景与可持续性方面的最新进展。

Higgs Factory Considerations

We discuss considerations that can be used to formulate recommendations for initiating a lepton collider project that would provide precision studies of the Higgs boson and related electroweak phenomena.

在未来 ${Z}$ 工厂中测量 $B_s^0 \to D_s^{\mp} K^{\pm}$ 衰变里 $C\\!P$ 破坏观测量的前景

Prospect for measurement of $C\!P$-violating observables in $B_s^0 \to D_s^{\mp} K^{\pm}$ decays at a future ${Z}$ factory

本研究基于CEPC探测器概念，利用蒙特卡洛模拟开发二维拟合框架，评估了未来Tera-$Z$工厂通过$B_s^0 \to D_s^\mp K^\pm$衰变测量CKM角$γ$的精度，确立了亚度级测量的可行性。

The Higgs Signatures at the CEPC CDR Baseline

As a Higgs factory, The CEPC (Circular Electron-Positron Collider) project aims at the precise measurement of the Higgs boson properties. A baseline detector concept, APODIS (A PFA Oriented Detector for the HIggS factory), has been proposed for the CEPC CDR (Conceptual Design Report) study. We explore the Higgs signatures at this baseline setup with nunuHiggs events. The detector performance of the charged particles, the photons, and the jets are quantified with Higgs -> mumu, gammagamma, and jet final states respectively. The accuracy of reconstructed Higgs boson mass is comparable at differe…

Erice 研讨会论文集：混合、非对称线性 Higgs 工厂 HALHF 的新基线

Proceedings of the Erice Workshop: A new baseline for the hybrid, asymmetric, linear Higgs factory HALHF

HALHF 合作组基于社区反馈提出优化新基线，解决原始设计弱点，提升亮度并增加正负电子极化，虽更长更贵但仍小于其他成熟 Higgs 工厂方案。

A cornucopia of antineutrons and hyperons from super J/psi factory for next-generation nuclear and particle physics high-precision experiments

In order to study the interactions and structure of various types of matter one typically needs to carry out scattering experiments utilizing many different particles as projectiles. Whereas beams of $e^\pm$, $μ^\pm$, $π^\pm$, $K^\pm$, proton, antiproton, and of various heavy ions have been produced and have enabled many scientific breakthroughs, beams of antineutrons, hyperons ($Λ$, $Σ$ and $Ξ$) and their antiparticles are typically not easy to obtain. Here we point out and investigate a new high-quality source of these particles: a super $J/ψ$ factory with capability of accumulating trillion…

The carbon footprint of proposed $\rm e^+e^-$ Higgs factories

The energy consumption of any of the $\rm e^+e^-$ Higgs factory projects that can credibly operate immediately after the end of LHC, namely three linear colliders (CLIC, operating at $\sqrt{s}=380$GeV; and ILC and $\rm C^3$, operating at $\sqrt{s}=250$ GeV) and two circular colliders (CEPC and FCC-ee, operating at $\sqrt{s}=240$ GeV), will be everything but negligible. Future Higgs boson studies may therefore have a significant environmental impact. This note proposes to include the carbon footprint for a given physics performance as a top-level gauge for the design optimization and, eventuall…