Faculty and Student Publications

Authors

I. Adachi, The Graduate University for Advanced Studies
P. Ahlburg, Universität Bonn
H. Aihara, The University of Tokyo
N. Akopov, Yerevan Physics Institute
A. Aloisio, Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
N. Anh Ky, Duy Tan University
D. M. Asner, Brookhaven National Laboratory
H. Atmacan, University of Cincinnati
T. Aushev, Moscow Institute of Physics and Technology
V. Aushev, Taras Shevchenko National University of Kyiv
T. Aziz, Tata Institute of Fundamental Research, Mumbai
V. Babu, Deutsches Elektronen-Synchrotron (DESY)
S. Baehr, Karlsruhe Institute of Technology
P. Bambade, Laboratoire de l'Accélérateur Linéaire
Sw Banerjee, University of Louisville
V. Bansal, Pacific Northwest National Laboratory
M. Barrett, High Energy Accelerator Research Organization, Tsukuba
J. Baudot, Université de Strasbourg
J. Becker, Karlsruhe Institute of Technology
P. K. Behera, Indian Institute of Technology Madras
J. V. Bennett, University of Mississippi
E. Bernieri, Istituto Nazionale di Fisica Nucleare - INFN
F. U. Bernlochner, Universität Bonn
M. Bertemes, Institut fur Hochenergiephysik
M. Bessner, University of Hawaiʻi at Mānoa
S. Bettarini, Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
F. Bianchi, Istituto Nazionale di Fisica Nucleare, Sezione di Torino
D. Biswas, University of Louisville
A. Bozek, Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
M. Bračko, Jozef Stefan Institute
P. Branchini, Istituto Nazionale di Fisica Nucleare - INFN
R. A. Briere, Carnegie Mellon University

Document Type

Article

Publication Date

4-10-2020

Abstract

© 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/" Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP 3 . 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±μZ′. 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 Lμ-Lτ theory, into upper limits on the Z′ coupling constant at the level of 5×10-2-1 for MZ′≤6 GeV/c2.

Relational Format

journal article

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