An angular analysis of B0 → K*0 e+ 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*0 μ+ 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 → s ℓ+ ℓ− processes, where ℓ is either a muon or an electron. No sign of lepton-flavour-violating effects is observed.

Aaij, R., Abdelmotteleb, A.S.W., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adefisoye, A.A., et al. (2025). Angular analysis of B0 → K*0 e+ e− decays. JOURNAL OF HIGH ENERGY PHYSICS, 2025(6), 0-52 [10.1007/jhep06(2025)140].

Angular analysis of B0 → K*0 e+ e− decays

Carbone, A.;Ferrari, F.;Galli, D.;Patrignani, C.;Spedicato, E.;Villa, A.;Zenesini, F.;
2025

Abstract

An angular analysis of B0 → K*0 e+ 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*0 μ+ 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 → s ℓ+ ℓ− processes, where ℓ is either a muon or an electron. No sign of lepton-flavour-violating effects is observed.
2025
Aaij, R., Abdelmotteleb, A.S.W., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adefisoye, A.A., et al. (2025). Angular analysis of B0 → K*0 e+ e− decays. JOURNAL OF HIGH ENERGY PHYSICS, 2025(6), 0-52 [10.1007/jhep06(2025)140].
Aaij, R.; Abdelmotteleb, A. S. W.; Abellan Beteta, C.; Abudinén, F.; Ackernley, T.; Adefisoye, A. A.; Adeva, B.; Adinolfi, M.; Adlarson, P.; Agapopoul...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1035195
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