RT Journal Article
T1 Angular analysis of the B0 → K*0e+e− decay in the low-q2 region
A1 LHCb Collaboration, 
A1 Adeva Andany, Bernardo
A1 Álvarez Cartelle, Paula
A1 Dosil Suárez, Álvaro
A1 Fernández Albor, Víctor Manuel
A1 Gallas Torreira, Abraham Antonio
A1 García Pardiñas, Julián
A1 Hernando Morata, José Ángel
A1 Plo Casasus, Máximo
A1 Romero Vidal, Antonio
A1 Saborido Silva, Juan José
A1 Sanmartín Sedes, Brais
A1 Santamarina Ríos, Cibrán
A1 Vázquez Regueiro, Pablo
A1 Vázquez Sierra, Carlos
A1 Vieites Díaz, María
K1 Rare decay
K1 Polarization
K1 B physics
K1 Flavour Changing Neutral Currents
K1 Hadron-Hadron Scattering
AB An angular analysis of the B0 → K*0e+e− decay is performed using a data sample, corresponding to an integrated luminosity of 3.0 fb−1, collected by the LHCb experiment in pp collisions at centre-of-mass energies of 7 and 8 TeV during 2011 and 2012. For the first time several observables are measured in the dielectron mass squared (q2) interval between 0.002 and 1.120 GeV2/c4. The angular observables FL and A ReT which are related to the K*0 polarisation and to the lepton forward-backward asymmetry, are measured to be FL = 0.16 ± 0.06 ± 0.03 and A ReT = 0.10 ± 0.18 ± 0.05, where the first uncertainty is statistical and the second systematic. The angular observables A (2)T and A ImT which are sensitive to the photon polarisation in this q2 range, are found to be A (2)T = − 0.23 ± 0.23 ± 0.05 and A ImT = 0.14 ± 0.22 ± 0.05. The results are consistent with Standard Model predictions.
PB Springer
SN 1029-8479
YR 2015
FD 2015
LK http://hdl.handle.net/10347/21977
UL http://hdl.handle.net/10347/21977
LA eng
NO Aaij, R., Adeva, B., Adinolfi, M. et al. Angular analysis of the B0 → K*0e+e− decay in the low-q2 region. J. High Energ. Phys. 2015, 64 (2015). https://doi.org/10.1007/JHEP04(2015)064
DS Minerva
RD 24 abr 2026