# name
Measurement of the B 0 → K ∗0 e + e - branching fraction at low dilepton mass

# metadata.dc.description.abstract[].value
The branching fraction of the rare decay B0→ K∗0 e +e− in the dilepton mass region from 30 to 1000 MeV/c2 has been measured by the LHCb experiment, using pp collision data, corresponding to an integrated luminosity of 1.0 fb−1, at a centre-of-mass energy of 7 TeV. The decay mode B0 → J/ψ(e+e−)K∗0 is utilized as a normalization
channel. The branching fraction B(B0 → K∗0e+e−) is measured to beB(B
0→ K∗0 e+e−)30−1000 MeV/c2= (3.1+0.9 +0.2−0.8 −0.3 ± 0.2) × 10−7
, where the first error is statistical, the second is systematic, and the third comes from the uncertainties on the B0→ J/ψ K∗0 and J/ψ → e+e− branching fractions.

# metadata.dc.relation.ispartof[].value
Journal of High Energy Physics, 2013, vol. 159, num. 159

# metadata.dc.rights[].value
cc-by (c) LHCb Collaboration et al., 2013

# metadata.dc.source[].value
Articles publicats en revistes (Física Quàntica i Astrofísica)

# metadata.dc.subject.other[].value
Large Hadron Collider (France and Switzerland)

# metadata.dc.title[].value
Measurement of the B 0 → K ∗0 e + e - branching fraction at low dilepton mass