boson at Belle II in 
plus missing energy final statesAdachi, Ichiro*; Tanida, Kiyoshi 
; Belle II Collaboration*; 358 of others*
Theories beyond the standard model often predict the existence of an additional neutral boson, the . 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 in the process 
and of a lepton-flavor-violating in 
. 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 
theory, into upper limits on the coupling constant at the level of 
- 
for 
GeV/
.
Language |
: | English |
|---|---|---|
Journal |
: | |
Volume |
: | 124 |
Number |
: | 14 |
Pages |
: | p.141801_1 - 141801_9 |
Publication Year/Month |
: | 2020/04 |
Paper URL |
: |
|
Keywords |
: | no keyword |
Cooperating Institute |
: |
Accesses |
: |
- Accesses |
|---|---|---|
InCites™ |
: |
Percentile:94.52 Category:Physics, Multidisciplinary |
Altmetrics |
: |
[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.
