Experimental evidence of crystal symmetry protection for the topological nodal line semimetal state in ZrSiS

C. C. Gu^*, J. Hu, X. L. Chen, Z. P. Guo, B. T. Fu, Y. H. Zhou, C. An, Y. Zhou, R. R. Zhang, C. Y. Xi, Q. Y. Gu, C. Park, H. Y. Shu, W. G. Yang, L. Pi, Y. H. Zhang, Y. G. Yao, Z. R. Yang, J. H. Zhou, J. SunZ. Q. Mao, M. L. Tian

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