Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Observation of doubly charmed B decays at LEP
AU - ALEPH Collaboration, The
AU - Barate, R.
AU - Betteridge, Andrew
AU - Bowdery, Christopher
AU - Colrain, Paul
AU - Finch, Alexander
AU - Foster, Frank
AU - Hughes, Gareth
AU - Jones, Roger
AU - Williams, Mark
PY - 1998/7
Y1 - 1998/7
N2 - A search for doubly-charmed B decays with both charmed mesons reconstructed is performed, using about 3.8 million hadronic Z decays recorded with the ALEPH detector at LEP. A clear signal is observed in the channels B→DsD¯(X) and B→DD¯(X) (where D can be either a D 0 , a D + or a D ∗+ ), providing the first direct evidence for doubly-charmed B decays involving no Ds production. Evidence for associated K0S and K± production in the decays B→DD¯(X) is also presented and some candidates for completely reconstructed decays B→DsD¯(nπ) , B→DD¯K0S and B→DD¯K± are observed. Furthermore, candidates for the two-body Cabibbo suppressed decays B0→D∗−D∗+ and B−→D(∗)0D(∗)− are also observed. Measurements of the corresponding branching fractions are extracted.
AB - A search for doubly-charmed B decays with both charmed mesons reconstructed is performed, using about 3.8 million hadronic Z decays recorded with the ALEPH detector at LEP. A clear signal is observed in the channels B→DsD¯(X) and B→DD¯(X) (where D can be either a D 0 , a D + or a D ∗+ ), providing the first direct evidence for doubly-charmed B decays involving no Ds production. Evidence for associated K0S and K± production in the decays B→DD¯(X) is also presented and some candidates for completely reconstructed decays B→DsD¯(nπ) , B→DD¯K0S and B→DD¯K± are observed. Furthermore, candidates for the two-body Cabibbo suppressed decays B0→D∗−D∗+ and B−→D(∗)0D(∗)− are also observed. Measurements of the corresponding branching fractions are extracted.
U2 - 10.1007/s100520050216
DO - 10.1007/s100520050216
M3 - Journal article
VL - 4
SP - 387
EP - 407
JO - The European Physical Journal C (EPJ C) - Particles and Fields
JF - The European Physical Journal C (EPJ C) - Particles and Fields
SN - 1434-6052
IS - 3
ER -