Production of massive bosons from the decay of a massless particle beam
Production of massive bosons from the decay of a massless particle beam
复制标题
无质量粒子束衰变产生大量玻色子
作者：
Ariel Arza
本文采用一个具有相互作用项的双相互作用标量玩具模型，研究了由一束渐近的高占满粒子衰变产生的x粒子。我们进行了非微扰分析来自参数共振不稳定性和调查的可能性，大规模的$chi$粒子产生的衰变无质量的$phi$粒子的光束。虽然这一过程在微扰分析中不存在，但我们的非微扰方法允许它在某些条件下发生。对于动量为p的粒子和质量为m_chi的粒子，我们发现，如果粒子的能量密度超过不稳定性阈值p ^2 m_chi ^4/（2g ^2）$，则衰变是允许的。我们还提供了最早时刻自发衰变率的解析表达式。
Taking a two interacting scalar toy model with interaction term $gphichi^2$, we study the production of $chi$ particles coming from the decay of an asymptotic and highly occupied beam of $phi$ particles. We perform a nonperturbative analysis coming from parametric resonant instabilities and investigate the possibility that massive $chi$ particles are produced from decays of massless $phi$ particles from the beam. Although this process is not present in a perturbative analysis, our nonperturbative approach allows it to happen under certain conditions. For a momentum $p$ of the beam particles and a mass $m_chi$ of the produced ones, we find that the decay is allowed if the energy density of the beam exceeds the instability threshold $p^2 m_chi^4/(2g^2)$. We also provide an analytical expression for the spontaneous decay rate at the earliest time.
影响因子：
6.4
作者：
M. Hertzberg;E. D. Schiappacasse
通讯作者：
M. Hertzberg;E. D. Schiappacasse