Loading...
research article
Search for a massive invisible particle X-0 in B+ -> e(+)X(0) and B+ -> mu X-+(0) decays
2016
We present a search for a non-Standard-Model invisible particle X-0 in the mass range 0.1-1.8 GeV/c(2) in B+ -> e(+)X(0) and B+ -> mu X-+(0) decays. The results are obtained from a 711 fb(-1) data sample that corresponds to 772 x 10(6) B (B) over bar pairs, collected at the Upsilon(4S) resonance with the Belle detector at the KEKB e(+)e(-) collider. One B meson is fully reconstructed in a hadronic mode to determine the momentum of the lepton of the signal decay in the rest frame of the recoiling partner B meson. We find no evidence of a signal and set upper limits on the order of 10(-6).
Type
research article
Web of Science ID
WOS:000380111000002
Authors
Park, C-S.
•
Kwon, Y-J.
•
Adachi, I.
•
Aihara, H.
•
Asner, D. M.
•
Aushev, T.
•
Babu, V.
•
Badhrees, I.
•
Bakich, A. M.
•
Barberio, E.
Corporate authors
Belle Collaboration
Publication date
2016
Publisher
Published in
Volume
94
Issue
1
Article Number
012003
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
October 18, 2016
Use this identifier to reference this record