RSVP Research and Development

RSVP项目的科学目的是观察极罕见的过程，这些过程将标志着基本粒子物理学标准模型（SM）的基本对称定律的崩溃。在此过程中，RSVP将寻求粒子物理学中三个最引人注目的问题的答案：在最高能量对撞机所能达到的最高能量之外，存在哪些新粒子和基本相互作用；宇宙中物质-反物质不对称的起源是什么？K介子和B介子系统中CP（电荷宇称）对称性破缺的程度是否与SM预测的相同？RSVP将通过推进所谓的“敏感性边界”来寻求一个非常有前途的策略来回答这些关键问题。它补充了在“能量前沿”寻找新粒子的传统方法。RSVP项目利用布鲁克海文国家实验室（BNL）交替梯度同步加速器（AGS）提供的高强度质子束的独特能力。RSVP合作将建造两个大型粒子物理探测器，用于分析介子束（MECO）和介子束（KOPIO）衰变中产生的粒子。μ子和介子束是AGS的脉冲低能质子主束撞击适当目标时产生的二次束，产生的粒子经历了待研究的反应。

The scientific purpose of the RSVP project is to observe extremely rare processes that would signal a breakdown of fundamental symmetry laws of the Standard Model (SM) of Elementary Particle Physics. In doing so, RSVP will seek answers to three of the most compelling questions in particle physics: What new particles and fundamental interactions exist beyond the highest energies achievable with the highest energy colliders; what is the origin of the matter-antimatter asymmetry in the universe; and is the degree of CP (charge-parity) symmetry breaking in the K meson and B meson systems the same, as predicted by the SM? RSVP will pursue a very promising strategy for answering these key questions by advancing the so-called "sensitivity frontier." It complements the traditional approach of searching for new particles at the "energy frontier."The RSVP project uses the unique capabilities of the high-intensity proton beam provided by the Brookhaven National Laboratory (BNL) Alternating Gradient Synchrotron (AGS). The RSVP collaboration will construct two large particle physics detectors, which will analyze particles produced in the decays of beams of muons (MECO) and of kaons (KOPIO). The beams of muons and kaons are secondary beams produced when the AGS's primary beam of pulsed, low-energy protons strikes an appropriate target, generating particles that undergo the reactions to be studied.