Izaguirre Eder, Lin Tongyan, Shuve Brian
Brookhaven National Laboratory, Upton, New York 11973, USA.
Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
Phys Rev Lett. 2017 Mar 17;118(11):111802. doi: 10.1103/PhysRevLett.118.111802. Epub 2017 Mar 15.
We propose new searches for axionlike particles (ALPs) produced in flavor-changing neutral current (FCNC) processes. This proposal exploits the often-overlooked coupling of ALPs to W^{±} bosons, leading to FCNC production of ALPs even in the absence of a direct coupling to fermions. Our proposed searches for resonant ALP production in decays such as B→K^{(*)}a, a→γγ, and K→πa, a→γγ could greatly improve upon the current sensitivity to ALP couplings to standard model particles. We also determine analogous constraints and discovery prospects for invisibly decaying ALPs.
我们提议对味变中性流（FCNC）过程中产生的类轴子粒子（ALP）进行新的搜寻。该提议利用了通常被忽视的ALP与W±玻色子的耦合，即使在没有与费米子直接耦合的情况下，也能导致ALP的FCNC产生。我们提议在诸如B→K*a，a→γγ以及K→πa，a→γγ等衰变过程中对共振ALP产生进行搜寻，这可以极大地提高目前对ALP与标准模型粒子耦合的灵敏度。我们还确定了不可见衰变ALP的类似限制和发现前景。
