Author

Partha Kumar Paul

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Preprint Sep 2026

Mono-Z signal for dark matter searches at future lepton colliders and cosmological interpretation

We investigate mono-$Z$ signature at the future electron-positron collider within the dark matter effective field theory (DMEFT) framework, considering operators up to dimension six for scalar, fermionic, and vector dark matter (DM) candidates. The operators are classified according to their underlying production mecha...

Anupam Ghosh, Partha Kumar Paul, Abhik Sarkar et al. · 0 citations

Preprint Sep 2026

Inelastic Self-interacting Dark Matter and LUX-ZEPLIN 248 keV Event in a Dirac Modular Inverse Seesaw

We propose a novel framework that simultaneously addresses the origin of Dirac neutrino masses and the nature of self-interacting dark matter (SIDM). The model is based on an $A_{4}$ modular symmetry to ensure the Diracness of neutrinos as well as the stability of the DM. The neutrino sector realizes a Dirac Inverse Se...

Pritam Das, B. Karmakar, S. Mahapatra et al. · 32 citations

Preprint Oct 2026

An early $Z'$ dominance: dark matter, gravitational waves&collider probes

In the minimal anomaly-free gauged B$-$L extension of the Standard Model (SM), we consider a scenario in which the energy density of the new Abelian gauge boson dominates the Universe prior to big bang nucleosynthesis (BBN), resulting in an early matter-dominated (EMD) era. Taking one of the three right-handed neutrino...

B. Barman, Nayan Das, Partha Kumar Paul et al. · 0 citations