论文标题
中间衰减中的ALP产生
ALP production in weak mesonic decays
论文作者
论文摘要
轴突样粒子是标准模型中最经济，动机最充分的扩展之一。在这项工作中，研究了Hadronic和Leptonic Meson腐烂的ALP生产。这些衰减振幅的强膦部分是使用Brodsky-Lepage方法或LQCD获得的。特别是，针对伪级和载体介子，彻底讨论了中间S和T通道树级过程中ALP发射的一般表达式。因此，介绍了$ m_i \ to m_f \的衰减振幅的计算，提出了$和$ m \ to \ellνa$。最后，从当前和未来的风味实验中得出了（低能有效的拉格朗日）ALP-Fermion耦合的界限。
Axion-Like-Particles are among the most economical and well motivated extensions of the Standard Model. In this work ALP production from hadronic and leptonic meson decays are studied. The hadronization part of these decay amplitudes have been obtained using Brodsky-Lepage method or LQCD, at needs. In particular, the general expressions for ALP emission in mesonic s- and t-channel tree-level processes are thoroughly discussed, for pseudoscalar and vector mesons. Accordingly, the calculation of the decay amplitudes for $M_I\to M_F \,a$ and $M\to \ell νa$ are presented. Finally, bounds on the (low-energy effective Lagrangian) ALP-fermion couplings are derived, from present and future flavor experiments.
