Search for an Invisibly Decaying Z^{'} Boson at Belle II in e^{+}e^{-}→μ^{+}μ^{-}(e^{±}μ^{∓}) Plus Missing Energy Final States.

Journal Article (Journal Article)

Theories beyond the standard model often predict the existence of an additional neutral boson, the Z^{'}. Using data collected by the Belle II experiment during 2018 at the SuperKEKB collider, we perform the first searches for the invisible decay of a Z^{'} in the process e^{+}e^{-}→μ^{+}μ^{-}Z^{'} and of a lepton-flavor-violating Z^{'} in e^{+}e^{-}→e^{±}μ^{∓}Z^{'}. We do not find any excess of events and set 90% credibility level upper limits on the cross sections of these processes. We translate the former, in the framework of an L_{μ}-L_{τ} theory, into upper limits on the Z^{'} coupling constant at the level of 5×10^{-2}-1 for M_{Z^{'}}≤6  GeV/c^{2}.

Full Text

Duke Authors

Cited Authors

  • Adachi, I; Ahlburg, P; Aihara, H; Akopov, N; Aloisio, A; Anh Ky, N; Asner, DM; Atmacan, H; Aushev, T; Aushev, V; Aziz, T; Babu, V; Baehr, S; Bambade, P; Banerjee, S; Bansal, V; Barrett, M; Baudot, J; Becker, J; Behera, PK; Bennett, JV; Bernieri, E; Bernlochner, FU; Bertemes, M; Bessner, M; Bettarini, S; Bianchi, F; Biswas, D; Bozek, A; Bračko, M; Branchini, P; Briere, RA; Browder, TE; Budano, A; Burmistrov, L; Bussino, S; Campajola, M; Cao, L; Casarosa, G; Cecchi, C; Červenkov, D; Chang, M-C; Cheaib, R; Chekelian, V; Chen, YQ; Chen, Y-T; Cheon, BG; Chilikin, K; Cho, K; Cho, S; Choi, S-K; Choudhury, S; Cinabro, D; Corona, L; Cremaldi, LM; Cunliffe, S; Czank, T; Dattola, F; De La Cruz-Burelo, E; De Nardo, G; De Nuccio, M; De Pietro, G; de Sangro, R; Destefanis, M; Dey, S; De Yta-Hernandez, A; Di Capua, F; Doležal, Z; Domínguez Jiménez, I; Dong, TV; Dort, K; Dossett, D; Dubey, S; Duell, S; Dujany, G; Eidelman, S; Eliachevitch, M; Fast, JE; Ferber, T; Ferlewicz, D; Finocchiaro, G; Fiore, S; Fodor, A; Forti, F; Fulsom, BG; Ganiev, E; Garcia-Hernandez, M; Garg, R; Gaur, V; Gaz, A; Gellrich, A; Gemmler, J; Geßler, T; Giordano, R; Giri, A; Gobbo, B; Godang, R; Goldenzweig, P; Golob, B; Gomis, P; Gradl, W; Graziani, E; Greenwald, D; Guan, Y; Hadjivasiliou, C; Halder, S; Hara, T; Hartbrich, O; Hayasaka, K; Hayashii, H; Hearty, C; Hedges, MT; Heredia de la Cruz, I; Hernández Villanueva, M; Hershenhorn, A; Higuchi, T; Hill, EC; Hoek, M; Hsu, C-L; Hu, Y; Iijima, T; Inami, K; Inguglia, G; Irakkathil Jabbar, J; Ishikawa, A; Itoh, R; Iwasaki, Y; Jacobs, WW; Jaffe, DE; Jang, E-J; Jeon, HB; Jia, S; Jin, Y; Joo, C; Joo, KK; Kahn, J; Kakuno, H; Kaliyar, AB; Kandra, J; Karyan, G; Kato, Y; Kawasaki, T; Kim, BH; Kim, C-H; Kim, DY; Kim, K-H; Kim, S-H; Kim, YK; Kim, Y; Kimmel, TD; Kindo, H; Kleinwort, C; Kodyš, P; Koga, T; Kohani, S; Komarov, I; Korpar, S; Kovalchuk, N; Kraetzschmar, TMG; Križan, P; Kroeger, R; Krokovny, P; Kuhr, T; Kumar, J; Kumar, M; Kumar, R; Kumara, K; Kurz, S; Kuzmin, A; Kwon, Y-J; Lacaprara, S; La Licata, C; Lanceri, L; Lange, JS; Lautenbach, K; Lee, I-S; Lee, SC; Leitl, P; Levit, D; Li, LK; Li, YB; Libby, J; Lieret, K; Li Gioi, L; Liptak, Z; Liu, QY; Liventsev, D; Longo, S; Luo, T; Maeda, Y; Maggiora, M; Manoni, E; Marcello, S; Marinas, C; Martini, A; Masuda, M; Matsuda, T; Matsuoka, K; Matvienko, D; Meggendorfer, F; Mei, JC; Meier, F; Merola, M; Metzner, F; Milesi, M; Miller, C; Miyabayashi, K; Miyake, H; Mizuk, R; Azmi, K; Mohanty, GB; Moon, T; Morii, T; Moser, H-G; Mueller, F; Müller, FJ; Muller, T; Muroyama, G; Mussa, R; Nakano, E; Nakao, M; Nayak, M; Nazaryan, G; Neverov, D; Niebuhr, C; Nisar, NK; Nishida, S; Nishimura, K; Nishimura, M; Oberhof, B; Ogawa, K; Onishchuk, Y; Ono, H; Onuki, Y; Oskin, P; Ozaki, H; Pakhlov, P; Pakhlova, G; Paladino, A; Panta, A; Paoloni, E; Park, H; Paschen, B; Passeri, A; Pathak, A; Paul, S; Pedlar, TK; Peruzzi, I; Peschke, R; Pestotnik, R; Piccolo, M; Piilonen, LE; Popov, V; Praz, C; Prencipe, E; Prim, MT; Purohit, MV; Rados, P; Rasheed, R; Reiter, S; Remnev, M; Resmi, PK; Ripp-Baudot, I; Ritter, M; Rizzo, G; Rizzuto, LB; Robertson, SH; Rodríguez Pérez, D; Roney, JM; Rosenfeld, C; Rostomyan, A; Rout, N; Russo, G; Sahoo, D; Sakai, Y; Sandilya, S; Sangal, A; Santelj, L; Sartori, P; Sato, Y; Savinov, V; Scavino, B; Schueler, J; Schwanda, C; Seddon, RM; Seino, Y; Selce, A; Senyo, K; Sfienti, C; Shen, CP; Shiu, J-G; Shwartz, B; Sibidanov, A; Simon, F; Sobie, RJ; Soffer, A; Sokolov, A; Solovieva, E; Spataro, S; Spruck, B; Starič, M; Stefkova, S; Stottler, ZS; Stroili, R; Strube, J; Sumihama, M; Sumiyoshi, T; Summers, DJ; Suzuki, SY; Tabata, M; Takizawa, M; Tamponi, U; Tanaka, S; Tanida, K; Taniguchi, N; Taras, P; Tenchini, F; Torassa, E; Trabelsi, K; Tsuboyama, T; Uchida, M; Unger, K; Unno, Y; Uno, S; Ushiroda, Y; Vahsen, SE; van Tonder, R; Varner, GS; Varvell, KE; Vinokurova, A; Vitale, L; Vossen, A; Wakai, M; Wakeling, HM; Wan Abdullah, W; Wang, CH; Wang, M-Z; Warburton, A; Watanabe, M; Webb, J; Wehle, S; Wessel, C; Wiechczynski, J; Windel, H; Won, E; Yabsley, B; Yamada, S; Yan, W; Yang, SB; Ye, H; Yin, JH; Yonenaga, M; Yuan, CZ; Yusa, Y; Zani, L; Zhang, Z; Zhilich, V; Zhou, QD; Zhou, XY; Zhukova, VI; Belle II Collaboration,

Published Date

  • April 2020

Published In

Volume / Issue

  • 124 / 14

Start / End Page

  • 141801 -

PubMed ID

  • 32338980

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.124.141801

Language

  • eng