The flavour of New Physics in the loops of hadronic beauty decays

粒子物理的标准模型(SM)虽然取得了令人难以置信的成功，但众所周知，它不能为各种观察到的物理现象提供充分的描述。香料领域的精密测量是在极高能级下探索SM以外的新物理(NP)的理想实验室。这项提议将使用大型强子对撞机美容(LHCB)实验中收集的数据，精确测量在美丽夸克到奇异夸克或下夸克跃迁中出现的对NP高度敏感的衰减率比和弱相。正在考虑的弱相，称为Phi-S，在SM中具有非常小的和精确的已知价值，使其确定成为探索NP的主要途径。然而，在SM的框架内，对实验测量的解释由于未知的污染贡献而变得复杂。在这个方案中，利用一种新的分析技术克服了这个问题，它通过利用已知对所研究的衰变保持的味道对称性来同时提取未知的贡献。这一方案将使世界上第一次使用这种分析方法精确测量Phi-S。我们将通过矢量矢量态，研究中性B介子到强子的七种相互关联的衰变模式。除了提取弱相以外，了解这些衰变的复杂幅度结构将有助于深入了解新物理在它们的衰变动力学中所扮演的角色。这项建议将对各种引人注目的衰减率参数和阶段进行世界上第一次也是世界上最精确的测量，以探索这些过程的基本性质。在这项建议的时间表内，可用的数据集将增加40倍，该项目将提供分析技术和软件工具的尖端发展。其结果是物理覆盖范围的一步变化，这将使这些精确的测量第一次得以进行。

The Standard Model (SM) of Particle Physics, whilst incredibly successfully, is known not to provide anadequate description for various observed physical phenomena. Precision measurements in the flavoursector are an ideal laboratory to search for New Physics (NP) beyond the SM at very high energy scales.This proposal will make precise measurements of highly NP sensitive decay rate ratios and weak phases,which arise in beauty-quark to strange- or down-quark transitions, using data collected at the LargeHadron Collider beauty (LHCb) experiment.The weak phase under consideration, called phi-s, has a very small and precisely known value in the SMmaking its determination a prime avenue for exploration of NP. However, interpretation of the experimentalmeasurement, within the framework of the SM, is complicated by unknown polluting contributions. Thisissue is overcome in this proposal using a novel analysis technique, which simultaneously extracts theunknown contribution by exploiting flavour symmetries that are known to hold for the decays under study.This proposal will make the world's first precision measurement of phi-s using this analysis method.A family of seven inter-related decay modes of neutral B-mesons to hadrons, via vector-vector states, willbe investigated. Beyond extraction of the weak phase, phi-s, understanding of the complex amplitudestructure of these decays will provide insights into the role of New Physics in their decay dynamics. Thisproposal will make world's first and world's most precise measurements of various compelling decay rateparameters and phases which probe the fundamental nature of these processes.During the timeline of this proposal the available datasets will increase by a factor of forty and theproject will deliver cutting-edge developments in analysis techniques and software tools. The outcome isa step-change in the physics reach, which will permit these precision measurements to be made for thefirst time.