9 papers
On the Robustness of type-II Seesaw Collider Searches
Christoph Englert, Manimala Mitra, Wrishik Naskar +1
Electroweak triplet Higgs sector extensions are well-motivated scenarios to address lepton flavour observations. These models can also be strongly constrained by combining precise,…
Exploring Scalar Leptoquarks at Muon Collider via Indirect Signatures and Right-Handed Neutrino-Assisted Decays
Subham Saha, Arvind Bhaskar, P. S. Bhupal Dev +1
Scalar leptoquarks (sLQs) appear in a wide range of ultraviolet-motivated extensions of the Standard Model and provide a natural link between the quark and lepton sectors. In this…
Exploring Leptoquarks and Majorana Neutrinos via same-sign dimuons at the HL-LHC
Subham Saha, Arvind Bhaskar, Manimala Mitra
We study the phenomenology of scalar leptoquark (sLQ) coupled to right-handed neutrinos (RHNs) at the High-Luminosity Large Hadron Collider (HL-LHC), focusing on…
Differentiating Dimension-6 and Dimension-8 Effects in SMEFT at the HL-LHC
Manimala Mitra, Shakeel Ur Rahaman, Subham Saha +1
We study dimension-eight effects in the Standard Model Effective Field Theory extended by right-handed neutrinos (SMEFT). Using the Hilbert series formalism, we derive the comp…
Illuminating Scalar Dark Matter Co-Scattering in EFT with Monophoton Signatures
Geneviève Bélanger, Manimala Mitra, Rojalin Padhan +1
We investigate the co-scattering mechanism for dark matter production in an EFT framework which contains new -odd singlets, namely two fermions and a real scalar $Ï…
Complex scalar dark matter with effective Higgs portals beyond radiation domination
Manimala Mitra, Dipankar Pradhan, Subham Saha
The increasingly stringent bounds on the Higgs-portal coupling, arising from dark matter (DM) direct-detection searches, confront the minimal renormalizable complex scalar DM scena…