39 research outputs found
Aditya Pratap Deo, Kings, Spirits and Memor y in Central India: Enchanting the State (London, New York: Routledge, South Asia Edition, 2022)
Book Review of Aditya Pratap Deo, Kings, Spirits and Memor y in Central India: Enchanting the State (London, New York: Routledge, South Asia Edition, 2022
Interpretation of the diphoton excess at CMS and ATLAS
We consider the diphoton resonance at the 13 TeV LHC in a consistent model
with new scalars and vector-like fermions added to the Standard Model (SM),
which can be constructed from orbifold grand unified theories and string
models. The gauge coupling unification can be achieved, neutrino masses can be
generated radiatively, and electroweak vacuum stability problem can be solved.
To explain the diphoton resonance, we study a spin-0 particle, and discuss
various associated final states.Comment: 8 pages, 6 figures, 3 tables; v2: typos corrected, references adde
Exploring the Jet Multiplicity in the 750 GeV Diphoton Excess
The recent diphoton excess at the LHC has been explained tentatively by a
Standard Model (SM) singlet scalar of 750 GeV in mass, in the association of
heavy particles with SM gauge charges. These new particles with various SM
gauge charges induce loop-level couplings of the new scalar to , ,
, , and . We show that the strength of the couplings
to the gauge bosons also determines the production mechanism of the scalar
particle via fusion which leads to
individually distinguishable jet distributions in the final state where the
statistics will be improved in the ongoing run. The number of jets and the
leading jet's transverse momentum distribution in the excess region of the
diphoton signal can be used to determine the coupling of the scalar to the
gauge bosons arising from the protons which subsequently determine the charges
of the heavy particles that arise from various well-motivated models.Comment: 4 pages, 4 figures, 1 tabl
Exploring the Doubly Charged Higgs of the Left-Right Symmetric Model using Vector Boson Fusion-like Events at the LHC
This paper studies the pair production of the doubly charged Higgs boson of
the left-right symmetric models using multilepton final state in the vector
boson fusion (VBF)-like processes. The study is performed in the framework
consistent with the model's correction to the standard model
parameter. VBF topological cuts, number of leptons in the final state and
cuts on the leptons are found to be effective in suppressing the background.
Significant mass reach can be achieved for exclusion/discovery of the doubly
charge Higgs boson for the upcoming LHC run with a luminosity of
fb.Comment: 13 pages, 8 figures, 2 tables; Version 2:Journal matched versio
Neutralinos and Sleptons at the LHC in Light of Muon
We study the muon anomaly in light of neutralino dark matter
and the LHC. We scan the MSSM parameters relevant to and focus on
three distinct cases with different neutralino compositions. We find that the
2 range of requires the smuon () to be
lighter than 500 (1000) GeV for . Correspondingly
the two lightest neutralinos, , have to
be lighter than 300 (650) GeV and 900 (1000) GeV respectively. We
explore the prospects of searching the light smuon and neutralinos at the LHC,
in conjunction with constraints arising from indirect dark matter (DM)
detection experiments. The upcoming run of the LHC will be able to set
CL exclusion limit on ( GeV) and
( GeV) with
GeV at 3000 fb luminosity in multi-lepton + missing energy channel.Comment: 43 pages, 8 figures, 11 tables; v3: Journal matched version - more
discussions and analyses added on non-bino type LS
Probing Compressed Sleptons at the LHC using Vector Boson Fusion Processes
The vector boson fusion (VBF) topology at the Large Hadron Collider at 14 TeV
provides an opportunity to search for new physics. A feasibility study for the
search of sleptons in a compressed mass spectra scenario is presented in the
final state of two jets, one or two low non-resonant leptons, and
missing energy. The presence of the VBF tagged jets and missing energy are
effective in reducing Standard Model backgrounds. Using smuon production with a
mass difference between and of 5-15 GeV,
the significance of observing the signal events is found to be
3-6 for =115-135 GeV, considering an integrated
luminosity of 3000 fb.Comment: 6 pages, 1 figure, 3 tables; v3: Journal matched versio
Explaining the CMS dilepton mass endpoint in the NMSSM
AbstractNMSSM scenarios are investigated to explain an excess in the opposite-sign dilepton mass distribution in events with dilepton, jets and missing transverse energy reported by the CMS experiment. We show that the NMSSM scenarios can possess unique features to explain this excess, and can be distinguished from the MSSM scenarios in the ongoing LHC runs as well as direct detection experiments