European Physical Journal C: Particles and Fields (Jan 2022)

Exploring new possibilities to discover a light pseudo-scalar at LHCb

  • Diogo Buarque Franzosi,
  • Giacomo Cacciapaglia,
  • Xabier Cid Vidal,
  • Gabriele Ferretti,
  • Thomas Flacke,
  • Carlos Vázquez Sierra

DOI
https://doi.org/10.1140/epjc/s10052-021-09930-y
Journal volume & issue
Vol. 82, no. 1
pp. 1 – 15

Abstract

Read online

Abstract We study the possibility of observing a light pseudo-scalar a at LHCb. We target the mass region $$2.5\,\mathrm{GeV}\lesssim m_a\lesssim 60\,\mathrm{GeV}$$ 2.5 GeV ≲ m a ≲ 60 GeV and various decay channels, some of which have never been considered before: muon pairs, tau pairs, D meson pairs, and di-photon. We interpret the results in the context of models of 4D Composite Higgs and Partial Compositeness in particular.