Angular analysis of B 0 → K *0 e + e − decays

Journal article

An angular analysis of B0→ K*0e+e− decays is presented using proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9 fb−1. The analysis is performed in the region of the dilepton invariant mass squared of 1.1–6.0 GeV2/c4. In addition, a test of lepton flavour universality is performed by comparing the obtained angular observables with those measured in B0→ K*0μ+μ− decays. In general, the angular observables are found to be consistent with the Standard Model expectations as well as with global analyses of other b → sℓ+ℓ− processes, where ℓ is either a muon or an electron. No sign of lepton-flavour-violating effects is observed.

Authors: Aaij, R; Abdelmotteleb, ASW; Abellan Beteta, C; Abudinén, F; Ackernley, T

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: Springer
• Journal: Journal of High Energy Physics
• Volume: 2025
• Issue: 6
• Article number: 140
• Publication date: 2025-06-13
• Acceptance date: 2025-04-17
• DOI: 10.1007/jhep06(2025)140
• EISSN: 1029-8479
• ISSN: 1126-6708
• Language: English
• Keywords: B Physics; Hadron-Hadron Scattering; Flavour Changing Neutral Currents; Rare Decay