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A new type of four-point interaction, W-l-nu-a, in an electroweak-violating scenario of axion-like particle (ALP) and lepton interactions plays a critical role in searching for ALPs from charged mesons and W boson decays because of the novel energy enhancements. Inspired by this interesting finding, we first proposed new t-channel processes for electrophilic ALPs (eALPs) which also involve W-l-nu-a four-point interaction and have obvious energy enhancement behaviors in their cross sections when the collision energy is increasing. On the other hand, heavier eALPs mainly decay to a photon pair induced by the chiral anomaly instead of an electron-positron pair. Therefore, studies of these t-channel processes with a photon pair plus missing energy at e+e− and ep colliders open a new door to search for eALPs at high energy colliders. The proposed search strategies are not only aiming to generate a larger production rate of ALPs, but also trying to distinguish electroweak-violating ALP-lepton interactions from electroweak-preserving ones.
Brief Biography :
Chih-Ting Lu, associate professor of Nanjing Normal University; He received his Ph.D. degree from Tsing Hua University (Hsinchu, Taiwan) in 2015, and then engaged in post-doctoral research at the Center for Theoretical Sciences in Taiwan and Korea Institute for Advanced Study in Korea.
His main research topics include collider physics phenomenology, Higgs physics, dark matter physics, and etc.
Tencent Meeting：629-766-911
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Prof. Jia Liu