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北京工业大学高能组

Di-photon amplitude analysis and its application

by Dr Ling-Yun Dai

Asia/Shanghai
数理楼3304 (北京工业大学)

数理楼3304

北京工业大学

北京市朝阳区平乐园100号
Description
报告人简介: 2003.09-2007.07 兰州大学,学士 2007.09-2012.07 北京大学,博士 2010.10-2011.09 西班牙 IFIC、UV,联培 2012.08-2012.10 中科院高能所 短期访问 2012.10-2014.08 美国 Jefferson Lab, 博士后 2014.09-2015.08 美国 Indiana University, 博士后 2016.01-2018.08 德国 Forschungszentrum Juelich,博士后 2018.03- 湖南大学, 教授 摘要: In this talk we perform a comprehensive amplitude analysis on photon-photon scattering into pion and kaon pairs. To constrain our hadronic amplitudes of \pi\pi scattering, we impose the precise \pi\pi-->\pi\pi and \pi\pi-->K Kbar amplitudes given by Roy, or Roy like equations as well as the experimental data. With these hadronic amplitudes and the high statistics datasets of photon-refusion, we apply Final State Interaction theorem and dispersion relations to obtain the final solutions. These amplitudes are rather helpful to constrain the pion polarizabilities and LbL sum rules.