136 citations · 276 across the 16 of their papers we have counts for
14 papers · 1 filter
Veltman Criteria in Beyond Standard Model Effective Field Theory of Complex Scalar Triplet
Jaydeb Das, Nilanjana Kumar
The Higgs mass is not protected by any symmetry in the Standard Model. Hence, the self-energy corrections to the Higgs mass become large due to the quadratic divergence terms. Velt…
A Brief Review on Jet Substructure in Connection with Collider Phenomenology
Nilanjana Kumar
It is a challenge for the theoretical particle physicists to perform the phenomenology of the Beyond Standard Model (BSM) theories using advanced simulations which can mimic the ex…
Alternative signatures of the quintuplet fermions at the LHC and future linear colliders
Nilanjana Kumar, Vandana Sahdev
Large fermionic multiplets appear in different extensions of the Standard Model (SM), which are essential to predict small neutrino masses, relic abundance of the dark matter (DM)…
Looking for a vectorlike B quark at LHC using jet substructure
Debajyoti Choudhury, Kuldeep Deka, Nilanjana Kumar
Vectorlike quarks have been shown to resolve certain long-standing discrepancies pertaining to the bottom sector. We investigate, here, the prospects of identifying the existence o…
Flavor violation at LHC in events with two opposite sign leptons and a -jet
Nilanjana Kumar
Hints of flavor violation at both charged and neutral current decays of mesons have been observed in experiments such as LHCb, Belle, and BaBar. The anomalies in the result can be…
Emergent 2HDM in LSS Little-Higgs: Musings from Flavor and Electroweak Physics
Nilanjana Kumar, Soumya Sadhukhan
The low energy effective theory ( TeV) of the little-Higgs model with , as proposed by Low, Skiba and Smith (LSS), exhibits a two-Higgs doublet model (2HDM) stru…
A multi-charged particle model with local to explain muon , flavor physics, and possible collider signature
Nilanjana Kumar, Takaaki Nomura, Hiroshi Okada
We consider a model with multi-charged particles including vector-like fermions and a charged scalar under a local symmetry. We search for allowed parameter region ex…
Search for opposite sign muon-tau pair and a b-jet at LHC in the context of flavor anomalies
Debajyoti Choudhury, Nilanjana Kumar, Anirban Kundu
Extant anomalies in several semileptonic -meson decays argue for physics beyond the Standard Model. Measurements of both neutral-current decays (such as , and $B_…
Impact of Yukawa-like dimension-5 operators on the Georgi-Machacek model
Avik Banerjee, Gautam Bhattacharyya, Nilanjana Kumar
We study the effects of including Yukawa-like dimension-5 operators in the Georgi-Machacek model where the Standard Model is augmented with triplet scalars. We focus only on the ch…
Same-sign Multilepton Signatures of an Quintuplet at the LHC
Sanjib Kumar Agarwalla, Kirtiman Ghosh, Nilanjana Kumar +1
We study in detail the collider signatures of an fermionic quintuplet in the framework of left-right symmetric model in the context of the 13 TeV LHC. Apart from giving a…
Constraining Composite Higgs Models using LHC data
Avik Banerjee, Gautam Bhattacharyya, Nilanjana Kumar +1
We systematically study the modifications in the couplings of the Higgs boson, when identified as a pseudo Nambu-Goldstone boson of a strong sector, in the light of LHC Run 1 and R…
Resummation of Goldstone boson contributions to the MSSM effective potential
Nilanjana Kumar, Stephen P. Martin
We discuss the resummation of the Goldstone boson contributions to the effective potential of the Minimal Supersymmetric Standard Model (MSSM). This eliminates the formal problems…
Vectorlike leptons at the Large Hadron Collider
Nilanjana Kumar, Stephen P. Martin
We study the prospects for excluding or discovering vectorlike leptons using multilepton events at the LHC. We consider models in which the vectorlike leptons decay to tau leptons.…
LHC search for di-Higgs decays of stoponium and other scalars in events with two photons and two bottom jets
Nilanjana Kumar, Stephen P. Martin
We study the prospects for LHC discovery of a narrow resonance that decays to two Higgs bosons, using the final state of two photons and two bottom jets. Our work is motivated in p…