Sanjoy Biswas

Single top and Higgs associated production as a probe of the \(Ht\overline{t}\) coupling sign at the LHC

A bstractThe LHC sensitivity to an anomalous Higgs coupling to the top quark in the Higgs-top associated production is analyzed. Thanks to the strong destructive interference in the t-channel for standard model couplings, this process can be very sensitive to both the magnitude and the sign of a nonstandard top-Higgs coupling. We analyze cross sections and the main irreducible backgrounds for the H → γγ decay channel. Sensitivities to an anomalous sign for the top Yukawa coupling are found to be large. In particular, at

Explaining the lepton non-universality at the LHCb and CMS within a unified framework

\sqrt{s}=14\;\mathrm{TeV}

Direct constraints on the top-Higgs coupling from the 8 TeV LHC data

, assuming a universal rescaling in the Yukawa sector, a parton-level analysis with realistic selection cuts gives a signal-to-background ratio S/B ~ 5, for

Neutralino reconstruction in supersymmetry with long-lived staus

-1.5\lesssim {{{{Y_t}}} \left/ {{Y_t^{SM}\lesssim 0}} \right.}

Light neutralino dark matter in the MSSM and its implication for LHC searches for staus

. A number of events S ≃ 10 (with corresponding significances ~ 3 σ) are expected for 60 fb−1, to be compared with the standard-model expectation S ~ 0.3.

Exploring novel correlations in trilepton channels at the LHC for the minimal supersymmetric inverse seesaw model

A bstractThe recent results from the LHCb in the context of (B+ → K+ll) decay and the CMS analysis in the context of right handed W-boson (WR) search show a 2.6σ and a 2.8σ deviations from the Standard Model expectations respectively. In this work, we address these two seemingly uncorrelated results in the context of ℛ

eejj

\mathrm{\mathcal{R}}

\mathcal{R}-

-parity violating supersymmetry. We found that a particular combination of LQDc-type operators which successfully explain the LHCb result, can also accommodate the CMS excess in the eejj channel of the WR search.