The chiral Lagrangian of CP-violating axion-like particles

L Di Luzio, G Levati, P Paradisi - Journal of High Energy Physics, 2024 - Springer
A bstract We discuss the construction of the most general CP-violating chiral Lagrangian for
an axion-like particle (ALP). Starting with an effective Lagrangian containing light quarks …

Dark Photons from displaced vertices

T Bandyopadhyay - The European Physical Journal Special Topics, 2024 - Springer
We investigate the unexplored regions of the dark photon parameter space to find a search
strategy suitable to probe these. We show how displaced track searches at colliders with …

A twisted tale of the transverse-mass tail

T Bandyopadhyay, A Budhraja, S Mukherjee… - Journal of High Energy …, 2023 - Springer
A bstract We propose a tantalizing possibility that misinterpretation of the reconstructed
missing momentum may have yielded the observed discrepancies among measurements of …

CP-Violating Axions: A Theory Review

L Di Luzio, H Gisbert, G Levati, P Paradisi… - arXiv preprint arXiv …, 2023 - arxiv.org
We review the physics case for CP-violating axions. In the first part, we focus on the
Quantum Chromodynamics (QCD) axion and argue that new sources of CP violation beyond …

[HTML][HTML] Probing the interactions of axion-like particles with electroweak bosons and the Higgs boson in the high energy regime at LHC

T Biswas - Journal of High Energy Physics, 2024 - Springer
A bstract We study the interactions of axion-like particles (ALPs) with the Standard Model
particles, aiming to probe their phenomenology via non-resonant searches at the LHC …

Dark QCD perspective inspired by strong CP problem at QCD scale

B Wang, S Matsuzaki, H Ishida - arXiv preprint arXiv:2409.05443, 2024 - arxiv.org
We discuss a QCD-scale composite axion model arising from dark QCD coupled to QCD.
The presently proposed scenario not only solves the strong CP problem, but also is …

Final state rescattering effects in axio-hadronic and decays

DSM Alves, S Gonzàlez-Solís - arXiv preprint arXiv:2402.02993, 2024 - arxiv.org
It has been long-understood that final state rescattering effects provide $\mathcal {O}(1) $
corrections to hadronic meson decays rates, such as $\eta\to\pi\pi\pi $ and …

Leptophilic ALPs with TWIST data for polarized muon decays

A Budhraja, S Mukherjee, S Narasimha - arXiv preprint arXiv:2407.07987, 2024 - arxiv.org
We study the production of axion-like particles (ALPs) in association with electrons and
neutrinos in the muon decay process. For this purpose, we compute the decay width of the …

Signatures of generalized ALP interactions in SM decays of mesons

S Ghosh, T Bandyopadhyay, TS Roy - arXiv preprint arXiv:2208.13765, 2022 - arxiv.org
In addition to giving rise to spectacular new physics signals in the final states of meson
decays, Axion-like-particles also induce modifications in the standard model decays of …

[PDF][PDF] Sifting through the SM for the hints of an ALP

T Bandyopadhyay, S Ghosh, TS Roy𝑎 - 2022 - pos.sissa.it
Following the work discussed in Ref.[1], we will discuss some examples of how the chiral
Lagrangian of the Standard Model (SM) is modified in the presence of an Axion-like particle …