Jul, 2016
Search for a massive invisible particle X-0 in B+ -> e(+)X(0) and B+ -> mu X-+(0) decays
PHYSICAL REVIEW D
- Volume
- 94
- Number
- 1
- First page
- 012003-1
- Last page
- 012003-8
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1103/PhysRevD.94.012003
- Publisher
- AMER PHYSICAL SOC
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).
- Link information
- ID information
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- DOI : 10.1103/PhysRevD.94.012003
- ISSN : 2470-0010
- eISSN : 2470-0029
- Web of Science ID : WOS:000380111000002