Test of Lepton Flavour Universality with $B_s^0 to phi ell^+ ell^-$ Decays
Lepton flavour universality in rare $b to s$ transitions is tested for the first time using $B_s^0$ meson decays. The measurements are performed using $pp$ collision data collected by the LHCb experiment between 2011 and 2018, corresponding to a total integrated luminosity of $9~text{fb}^{-1}$.
Branching fraction ratios between the $B_s^0 to phi e^+ e^-$ and $B_s^0 to phi mu^+ mu^-$ decays are measured in three regions of dilepton mass squared, $q^2$, with
$0.1 < q^2 < 1.1~text{GeV}^2/c^4, quad 1.1 < q^2 < 6.0~text{GeV}^2/c^4, quad text{and} quad 15 < q^2 < 19~text{GeV}^2/c^4.$ The results agree with the Standard Model expectation of lepton flavour universality.
- Published in:
arXiv - Type:
Article - Authors:
Aaij, Roel; Abdelmotteleb, Ahmed Sameh Wagih; Beteta, C. Abellan; Abudinen, F.; Ackernley, Thomas; Adefisoye, A. A.; Adeva, Bernardo; Adinolfi, Marco; Adlarson, P.; Agapopoulou, Christina; Albrecht, Johannes; others - Year:
2024 - Source:
https://arxiv.org/abs/2410.13748
Citation information
Aaij, Roel; Abdelmotteleb, Ahmed Sameh Wagih; Beteta, C. Abellan; Abudinen, F.; Ackernley, Thomas; Adefisoye, A. A.; Adeva, Bernardo; Adinolfi, Marco; Adlarson, P.; Agapopoulou, Christina; Albrecht, Johannes; others: Test of Lepton Flavour Universality with $B_s^0 to phi ell^+ ell^-$ Decays, arXiv, 2024, https://arxiv.org/abs/2410.13748, Aaij.etal.2024e,
@Article{Aaij.etal.2024e,
author={Aaij, Roel; Abdelmotteleb, Ahmed Sameh Wagih; Beteta, C. Abellan; Abudinen, F.; Ackernley, Thomas; Adefisoye, A. A.; Adeva, Bernardo; Adinolfi, Marco; Adlarson, P.; Agapopoulou, Christina; Albrecht, Johannes; others},
title={Test of Lepton Flavour Universality with $B_s^0 to phi ell^+ ell^-$ Decays},
journal={arXiv},
url={https://arxiv.org/abs/2410.13748},
year={2024},
abstract={Lepton flavour universality in rare $b to s$ transitions is tested for the first time using $B_s^0$ meson decays. The measurements are performed using $pp$ collision data collected by the LHCb experiment between 2011 and 2018, corresponding to a total integrated luminosity of $9~text{fb}^{-1}$.
Branching fraction ratios between the $B_s^0 to phi e^+ e^-$ and $B_s^0 to phi mu^+ mu^-$ decays are...}}
