First evidence for the annihilation decay mode B[superscript +] → D[superscript +][subscript s]φ
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Author(s)
Aaij, R.
Beteta, C. A
Adametz, A.
Adeva, B.
Adinolfi, M.
Adrover, C.
Affolder, A.
Ajaltouni, Z.
Albrecht, J.
Alessio, F.
Alternative Title
First evidence for the annihilation decay mode B+ → D+ s φ
Date Issued
February 2013
Journal
Journal of High Energy Physics
Publisher
Springer Berlin Heidelberg
Citation
The LHCb collaboration et al. “First Evidence for the Annihilation Decay Mode B[superscript +] → D[superscript +][subscript s]φ.” Journal of High Energy Physics 2013.2 (2013): n. pag. © 2013 CERN for the benefit of the LHCb collaboration
Version
Final published version
Abstract
Abstract: Evidence for the hadronic annihilation decay mode B[superscript +] → D[superscript +][subscript s] φ is found with greater than 3σ significance. The branching fraction and CP asymmetry are measured to be B(B[superscript +] → D[superscript +][subscript s] φ) = 1.87 +1.25
−0.73 (stat) ± 0.19 (syst) ± 0.32 (norm) × 10[superscript −6], A[subscript CP] (B[superscript +] → D[superscript +][subscript s] φ) = −0.01 ± 0.41 (stat) ± 0.03 (syst). The last uncertainty on B(B[superscript +] → D[superscript +][subscript s] φ) is from the branching fractions of the B[superscript +]→ D[superscript +][subscript s] [bar over D][superscript 0]
normalization mode and intermediate resonance decays. Upper limits are also set for the branching fractions of the related decay modes B
[superscript +][subscript (c)] → D[superscript +][subscript (s)]K[superscript ∗0], B[superscript +][subscript (c)] → D[superscript +][subscript (s)][bar overK][superscript ∗0] and B[superscript +][subscript c] → D[superscript +][subscript s] φ, including the result B(B[superscript +] → D[superscript +]K[superscript ∗0]) < 1.8×10−6 at the 90% credibility level.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1007/JHEP02(2013)043
