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Measurement of the B0→K∗0e+e− branching fraction at low dilepton mass

LHCb Collaboration; et al; Bernet, R; Müller, K; Steinkamp, O; Straumann, U; Vollhardt, A (2013). Measurement of the B0→K∗0e+e− branching fraction at low dilepton mass. Journal of High Energy Physics, 2013:159.

Abstract

The branching fraction of the rare decay B 0 → K ∗0 e + e − in the dilepton mass region from 30 to 1000 MeV/c 2 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 B 0 → J/ψ (e + e −)K ∗0 is utilized as a normalization channel. The branching fraction B(B0→K∗0e+e−) is measured to be B(B0→K∗0e+e−)30−1000MeV/c2 =(3.1+0.9−0.8+0.2−0.3±0.2)×10−7, where the first error is statistical, the second is systematic, and the third comes from the uncertainties on the B 0 → J/ψ K ∗0 and J/ψ → e + e − branching fractions.

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Physical Sciences > Nuclear and High Energy Physics
Language:English
Date:2013
Deposited On:21 Feb 2014 09:31
Last Modified:10 Jun 2025 01:39
Publisher:Springer
ISSN:1029-8479
OA Status:Hybrid
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1007/JHEP05(2013)159
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