Three double-ring B factories—PEP-II, KEKB, and SuperKEKB—were built with asymmetric beam energies to produce high luminosity at the Υ(4S) resonance producing copious B mesons and associated particle physics data, delivered to their respective particle physics detectors, BaBar, Belle, and Belle II. In PEP-II and KEKB, the primary goal was achieved to make the first measurements of charge parity (CP) violation in decays in the B meson system. PEP-II and KEKB have finished beam operations, but particle data analysis continues. SuperKEKB is extending those measurements. The beam operation of SuperKEKB with Belle II has recently started. These three accelerators have pushed the state of the art of accelerators of two-ring colliders, including small beam emittances, small interaction point beam sizes, large stored beam currents, crab cavities, top-up injection with the detectors on, bunch-by-bunch feedbacks, crab waist operation, high beam–beam parameters, high peak luminosity, and high integrated luminosity.

John T. Seeman

Annual Review of Nuclear and Particle Science

期刊目标和范围：《核与粒子科学年度评论》自 1952 年出版以来，涵盖了核与粒子科学领域的重大发展，包括最近的理论发展以及实验结果及其解释、核结构、重离子相互作用，在太阳和大气中微子中观察到的振荡，重夸克的物理学，粒子和核物理学对天体粒子物理学的影响，以及加速器设计和仪器的最新发展。

Since its inception in 1952, the Annual Review of Nuclear and Particle Science has focused on significant advancements in the field of nuclear and particle science. The journal covers recent theoretical developments, experimental results and their interpretations, nuclear structure, heavy ion interactions, neutrino oscillations observed in the sun and atmosphere, heavy quark physics, the impact of particle and nuclear physics on astroparticle physics, as well as the latest developments in accelerator design and instrumentation.

《Annual Review of Nuclear and Particle Science》自1952年出版以来，致力于核与粒子科学领域的重大进展。期刊内容涵盖了最新的理论发展、实验结果及其解释、核结构、重离子相互作用、在太阳和大气中观察到的中微子振荡、重夸克物理学、粒子和核物理学对天体粒子物理学的影响，以及加速器设计和仪器的最新进展。

Category	Quartile
物理与天体物理	2
物理与天体物理, 物理核物理	2
物理与天体物理, 物理粒子与场物理	2

High-Luminosity B Factory e+e− Colliders

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Journal Info

Category	Quartile
PHYSICS, PARTICLES & FIELDS	1