Search for a Light CP-odd Higgs Boson and Low-Mass Dark Matter at the Belle Experiment

We report on the first Belle search for a light CP-odd Higgs boson, A^{0}, that decays into low mass dark matter, χ, in final states with a single photon and missing energy. We search for events produced via the dipion transition ϒ(2S)→ϒ(1S)π^{+}π^{-}, followed by the on-shell process ϒ(1S)→γA^{0} w...

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Published in:	Physical review letters 2019-01, Vol.122 (1), p.011801-011801
Main Authors:	Seong, I S, Vahsen, S E, Adachi, I, Al Said, S, Asner, D M, Aushev, T, Bhardwaj, V, Biswal, J, Bobrov, A, Bonvicini, G, Bozek, A, Cao, L, Chekelian, V, Chen, A, Cho, K, Choi, Y, Cinabro, D, Dash, N, Di Carlo, S, Dingfelder, J, Dong, T V, Eidelman, S, Frey, A, Fulsom, B G, Gaur, V, Gabyshev, N, Garmash, A, Gelb, M, Giri, A, Hayashii, H, Hou, W-S, Hsu, C-L, Huang, K, Iijima, T, Inami, K, Inguglia, G, Itoh, R, Jacobs, W W, Jin, Y, Joffe, D, Joo, K K, Kaliyar, A B, Kichimi, H, Kiesling, C, Kim, D Y, Kim, K T, Kotchetkov, D, Kroeger, R, Kumita, T, Lee, I S, Lee, S C, Li, L K, Li, Y B, Li Gioi, L, Libby, J, Liventsev, D, Luo, T, Masuda, M, Miyabayashi, K, Mori, T, Mussa, R, Nakano, E, Nakao, M, Nath, K J, Nayak, M, Niiyama, M, Nisar, N K, Nishimura, K, Pakhlov, P, Pedlar, T K, Ritter, M, Sakai, Y, Savinov, V, Schneider, O, Schnell, G, Seon, O, Shen, C P, Simon, F, Solovieva, E, Starič, M, Sutcliffe, W, Takizawa, M, Tanida, K, Uglov, T, Van Hulse, C, Varner, G, Vinokurova, A, Wang, B, Wang, C H, Wang, P, Watanuki, S, Widmann, E, Won, E, Ye, H, Yelton, J, Yuan, C Z, Zhang, Z P, Zhilich, V, Zhulanov, V, Zupanc, A
Format:	Article
Language:	English
Subjects:	Dark matter Higgs bosons Quarks Searching Signal processing Weakly interacting massive particles
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