Angular analysis of the decay Bs0<i>→ φe</i><SUP>+</SUP><i>e<SUP>-</SUP></i>

A bstract An angular analysis of the decay $$ {B}_s^0 $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>B</mml:mi> <mml:mi>s</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> </mml:math> → ϕe + e − is presented, using proton-proton collision data collected with the LHCb detector between 2011 and 2018 at centre-of-mass energies of 7, 8 and 13 TeV. The combined dataset corresponds to an integrated luminosity of 9 fb − 1 . Observables are determined by fitting time-integrated projections of the angular distribution in three bins of dielectron mass squared, q 2 , corresponding to [0 . 1 , 1 . 1], [1 . 1 , 6 . 0] and [15 . 0 , 19 . 0] GeV 2 /c 4 . The results are compatible with predictions based on the Standard Model of particle physics.