Research Experiences
For the past seven years, I predominantly work on studying
anomalous couplings in electroweak sector with polarization of final state and initial
state particle. In collaboration with Dr. Ritesh K. Singh I studied the anomalous trilinear gauge couplings
of Z and g using a complete set of polarization asymmetries for Z boson
in e+e- --> ZZ/Zgamma processes with unpolarized initial beams and obtain a simultaneous
limit on all the anomalous couplings using Markov Chain Monte Carlo (MCMC)
method. Next I studied the effect of beam (e) polarization on the sensitivity of polarization
observables on the anomalous couplings in the same processes and estimated
best choice of beam polarization in terms of measure of goodness based on averaged likelihood.
After this, I studied anomalous W+W-V (V = Z, gamma) couplings in the process
e+e- --> W+W- with W boson polarization and beam polarization and obtain constrain
on the anomalous couplings using MCMC.
Next I studied ZZ production process at LHC
in 4l channel including aTGC with QCD
correction using spin polarization of Z boson
together with total rate. I was also involved in studying the
anomalous ZZH and
ZZHH couplings in the processes e+e- --> ZHH and e+e- --> HH nu nu_bar In collaboration with
Prof. P. Paulose et. al.
We study sensitivity
of cross section and other kinematic distributions on the anomalous couplings.
In collaboration with P. Poulose et. al. I also studied the Flavour
Changing Neutral Current (FCNC) in the single top quark production via tqZ interaction
at the proposed Large Hadron electron Collider (LHeC) with polarized electron beams.
We reconstruct the missing neutrino (nl) coming from t --> W+b, W+ --> nu_l l+ to construct
the polarization observables of top quark and use them to study signal as well as relevant
background and obtain constrain on the non-standard tqZ couplings. Then, I stuided the anomalous WWZ
couplings in ZW+/W- production process at the LHC in trilepton process with the polarizations of Z and Ws
by reconstructing the missing neutrino. I then worked on probing non standard b-Yukawa couplings
with Boosted decesion trees using XGBoos.
Ongoing project
Currently, I am working for the formalism of spin-spin correlations of a pair of spinfull particles,
dark Z-boson sutudy with polarizations, identifying lab frame observables correalated to polarizations.
