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

Authors :: Franzosi, Diogo Buarque
Cacciapaglia, Giacomo
Vidal, Xabier Cid
Ferretti, Gabriele
Flacke, Thomas
Sierra, Carlos Vázquez
Source :: Eur. Phys. J. C (2022) 82:3
Publication Year :: 2021
Abstract: We study the possibility of observing a light pseudo-scalar $a$ at LHCb. We target the mass region $1 \lesssim m_a \lesssim 60$ 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.<br />Comment: 15 pages, 13 figures, 6 tables. Final version published in EPJC