论文标题
S和C夸克质量的时空变化
Space-time variation of the s and c quark masses
论文作者
论文摘要
许多流行模型预测了扩展宇宙中基本物理常数的时空变化。第二代夸克的质量比第一代夸克质量大于几个数量级，因此，夸克质量的时空变化可能会在每一代之间发生明显变化。我们评估了大爆炸核合成，OKLO天然核反应堆，YB+，CS和RB时钟数据的S和C夸克质量变化的限制。预计第229核时钟的构建将通过几个数量级增强这些限制。此外，随着该领域与夸克的相互作用在夸克质量中产生变化，因此在振荡的标量或伪尺度冷暗物质场上获得了约束。
Space-time variation of fundamental physical constants in expanding Universe is predicted by a number of popular models. The masses of second generation quarks are larger than first generation quark masses by several orders of magnitude, therefore space-time variation in quark masses may significantly vary between each generation. We evaluate limits on variation in the s and c quark masses from Big Bang nucleosynthesis, Oklo natural nuclear reactor, Yb+, Cs and Rb clock data. The construction of 229Th nuclear clock is expected to enhance these limits by several orders of magnitude. Furthermore, constraints are obtained on an oscillating scalar or pseudoscalar cold dark matter field, as interactions of the field with quarks produce variations in quark masses.
