Doubly-charged scalar in four-body decays of neutral flavored mesonsSupported by National Natural Science Foundation of China (11405037, 11575048, 11505039)

Wang, Tian-Hong (Department of Physics, Harbin Institute of Technology, Harbin 150001, China) ; Li, Geng (Department of Physics, Harbin Institute of Technology, Harbin 150001, China) ; Jiang, Yue (Department of Physics, Harbin Institute of Technology, Harbin 150001, China) ; Wang, Guo-Li (Department of Physics, Harbin Institute of Technology, Harbin 150001, China)

02 January 2019

Abstract: We study the four-body decays of neutral flavored mesons, including , D0, , and . These processes, which could be induced by a hypothetical doubly-charged scalar particle, do not conserve the lepton number. Assuming, as an example, that the mass of the doubly-charged particle is 1000 GeV, and using the upper bounds of the couplings, we calculate the branching ratios of different channels. For , , and , it is of the order of 10−30, 10−32–10−29, and 10−33–10−28, respectively. Based on the experimental results for the channels, we also find the upper limit for the quantity .


Published in: Chinese Phys. C 43 (2019) 013103
Published by: Institute of Physics Publishing/Chinese Academy of Sciences
DOI: 10.1088/1674-1137/43/1/013103
arXiv: 1806.03837
License: CC-BY-3.0



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