3 papers
hep-ph2026
Revisiting Singlet Fermion Dark Matter with a Scalar Portal: Connecting Higgs Phenomenology and Strong Electroweak Phase Transition
Jaydeb Das, Saurabh Niyogi, Tripurari Srivastava
We investigate a minimal extension of the Standard Model with a real singlet scalar and a singlet Dirac fermion acting as dark matter. Unlike a conventional singlet scalar setup, w…
hep-ph2025
Electroweak Phase Transition, Gravitational Waves and Collider Probes in Multi-Scalar Dark Matter Scenarios
Tripurari Srivastava, Jaydeb Das, Anupam Ghosh +1
We study scalar singlet extensions of the Standard Model (SM), focusing on scenarios where dark matter (DM) is stabilized by a \(\mathbb{Z}_2\) symmetry. In the minimal single-scal…
hep-ph2024
Axion Icebergs: Clockwork ALPs at hadron colliders
Srimoy Bhattacharya, Debajyoti Choudhury, Suvam Maharana +1
Scenarios with multiple pseudoscalars are interesting as they usually tend to provide a framework to naturally realize a light axion with a large decay constant which has rich appl…