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oai:recercat.cat:20.500.14342/31392026-03-05T23:39:57Zcom_2072_482405com_2072_183628col_2072_482415

First evidence for the annihilation decay mode B+→D+sφ Calvo Gomez, Miriam Camboni, Alessandro Vilasis-Cardona, Xavier LHCb Collaboration - CERN Gran col·lisionador d'hadrons (França i Suïssa) Partícules (Física nuclear) Evidence for the hadronic annihilation decay mode B+→D+sϕ is found with greater than 3σ significance. The branching fraction and CP asymmetry are measured to be $ B(B+→D+sϕ)=(1.87+1.25−0.73(stat)±0.19(syst)±0.32(norm))×10−6,ACP(B+→D+sϕ)=−0.01±0.41(stat)±0.03(syst). $ The last uncertainty on B(B+→D+sϕ) is from the branching fractions of the B+→D+sD¯¯¯¯0 normalization mode and intermediate resonance decays. Upper limits are also set for the branching fractions of the related decay modes B+(c)→D+(s)K∗0,B+(c)→D+(s)K¯¯¯¯¯∗0 and B+c→D+sϕ, including the result B(B+→D+K∗0)<1.8×10−6 at the 90% credibility level. 2013-02-07 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.14342/3139 https://doi.org/10.1007/JHEP02(2013)043 eng Journal of High Energy Physics, 2013, Vol. 2013, No.2 (Febrer) http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Attribution 4.0 International © CERN Springer