标题： 通过粒子-反粒子振荡的重子生成 显示英文标题

标题： Baryogenesis via Particle-Antiparticle Oscillations

摘要： CP破坏对于产生宇宙的重子不对称性至关重要，并在粒子-反粒子振荡中被增强。我们在存在与O(ab-fb)截面相互作用的早期宇宙中研究了具有CP破坏的粒子-反粒子振荡（质量为O(100 GeV）的粒子）。我们表明，如果存在破坏重子数的相互作用，可以通过振荡粒子的非平衡衰变产生重子不对称性。作为一个具体例子，我们研究了一个$U(1)_R$对称的、破坏R宇称的超对称模型，其中包含伪狄拉克胶子。假设希格斯粒子是最轻的$U(1)_R$对称粒子，并且它通过破坏重子数的相互作用衰变，我们表明希格斯-反希格斯振荡可以产生宇宙的重子不对称性。 显示英文摘要

摘要： CP violation, which is crucial for producing the baryon asymmetry of the Universe, is enhanced in particle-antiparticle oscillations. We study particle-antiparticle oscillations (of a particle with mass O(100 GeV)) with CP violation in the early Universe in the presence of interactions with O(ab-fb) cross-sections. We show that, if baryon-number-violating interactions exist, a baryon asymmetry can be produced via out-of-equilibrium decays of oscillating particles. As a concrete example we study a $U(1)_R$-symmetric, R-parity-violating SUSY model with pseudo-Dirac gauginos, which undergo particle-antiparticle oscillations. Taking bino to be the lightest $U(1)_R$-symmetric particle, and assuming it decays via baryon-number-violating interactions, we show that bino-antibino oscillations can produce the baryon asymmetry of the Universe.