Details

Autor(en) / Beteiligte

• Aihara, H
• Akopov, N
• Aloisio, A
• Atmacan, H
• Aushev, V
• Baehr, S
• Barrett, M
• Behera, P K
• Bernieri, E
• Bernlochner, F U
• Bettarini, S
• Bozek, A
• Branchini, P
• Campajola, M
• Casarosa, G
• Choi, S-K
• Choudhury, S
• Cinabro, D
• De Nuccio, M
• Dort, K
• Dujany, G
• Fast, J E
• Fiore, S
• Garg, R
• Godang, R
• Golob, B
• Gomis, P
• Gradl, W
• Graziani, E
• Hara, T
• Hartbrich, O
• Hayasaka, K
• Hayashii, H
• Hedges, M T
• Higuchi, T
• Jacobs, W W
• Joo, C
• Kahn, J
• Kandra, J
• Kawasaki, T
• Kim, B H
• Kim, Y K
• Kodyš, P
• Kraetzschmar, T M G
• Kroeger, R
• Kuhr, T
• La Licata, C
• Leitl, P
• Levit, D
• Li, L K
• Li, Y B
• Longo, S
• Luo, T
• Milesi, M
• Morii, T
• Muller, Th
• Muroyama, G
• Nayak, M
• Niebuhr, C
• Nishimura, K
• Ogawa, K
• Ono, H
• Onuki, Y
• Ozaki, H
• Panta, A
• Park, H
• Paschen, B
• Passeri, A
• Pedlar, T K
• Peschke, R
• Prencipe, E
• Rados, P
• Rasheed, R
• Ripp-Baudot, I
• Rizzo, G
• Russo, G
• Sangal, A
• Santelj, L
• Sato, Y
• Scavino, B
• Schueler, J
• Sokolov, A
• Spataro, S
• Suzuki, S Y
• Takizawa, M
• Taras, P
• Torassa, E
• Tsuboyama, T
• Uchida, M
• Unno, Y
• Uno, S
• Vahsen, S E
• van Tonder, R
• Wakai, M
• Wakeling, H M
• Wang, C H
• Yabsley, B
• Zhang, Z
• Zhou, X Y
• Zhukova, V I

Titel

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

Ist Teil von

• Physical review letters, 2020-04, Vol.124 (14), p.141801-141801, Article 141801

Ort / Verlag

United States: American Physical Society

Erscheinungsjahr

2020

Link zum Volltext

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• 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}.