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Radion Portal Freeze-Out Dark-Matter
R. Sekhar Chivukula, Joshua A. Gill, Kenn S. Goh +5
We show that, in a consistent model of a stabilized extra-dimensional theory, the radion can serve as a natural portal between ordinary matter and WIMP dark matter. With an effecti…
Limits on Kaluza-Klein Portal Dark Matter Models
R. Sekhar Chivukula, Joshua A. Gill, Kirtimaan A. Mohan +4
We revisit the phenomenology of dark-matter (DM) scenarios within radius-stabilized Randall-Sundrum models. Specifically, we consider models where the dark matter candidates are St…
Scattering amplitudes in the Randall-Sundrum model with brane-localized curvature terms
R. Sekhar Chivukula, Kirtimaan A. Mohan, Dipan Sengupta +2
In this paper we investigate the scattering amplitudes of spin-2 Kaluza-Klein (KK) states in Randall-Sundrum models with brane-localized curvature terms. We show that the presence…
Symmetries, Spin-2 Scattering Amplitudes, and Equivalence theorems in Warped Five-Dimensional Gravitational Theories
R. Sekhar Chivukula, Joshua A. Gill, Kirtimaan A. Mohan +3
Building on work by Hang and He, we show how the residual five-dimensional diffeomorphism symmetries of compactified gravitational theories with a warped extra dimension imply Equi…
Scattering Amplitudes of Massive Spin-2 Kaluza-Klein States with Matter
R. Sekhar Chivukula, Joshua A. Gill, Kirtimaan A. Mohan +3
We perform a comprehensive analysis of the scattering of matter and gravitational Kaluza-Klein (KK) modes in five-dimensional gravity theories. We consider matter localized on a br…
Vector-Like Top Quark Production via an Electroweak Dipole Moment at a Muon Collider
Alexander Belyaev, R. Sekhar Chivukula, Benjamin Fuks +2
Vectorial partners of the Standard Model quarks and leptons are predicted in many dynamical models of electroweak symmetry breaking. The most easily accessible of these new particl…
Report of the Topical Group on Physics Beyond the Standard Model at Energy Frontier for Snowmass 2021
Tulika Bose, Antonio Boveia, Caterina Doglioni +318
This is the Snowmass2021 Energy Frontier (EF) Beyond the Standard Model (BSM) report. It combines the EF topical group reports of EF08 (Model-specific explorations), EF09 (More gen…
Single Vector-Like top quark production via chromomagnetic interactions at present and future hadron colliders A Snowmass 2021 White Paper
Alexander Belyaev, R. Sekhar Chivukula, Benjamin Fuks +2
In our recent paper, we have investigated the potential for the LHC to discover vector-like quark partner states singly produced via their chromomagnetic moment interactions. These…
Supersymmetry and Sum Rules in the Goldberger-Wise Model
R. Sekhar Chivukula, Elizabeth H. Simmons, Xing Wang
In this work we demonstrate that the mixed gravitational and scalar sectors of the five-dimensional Goldberger-Wise (GW) model, in which the size of a warped extra dimension is dyn…
Spin-2 Kaluza-Klein Scattering in a Stabilized Warped Background
R. Sekhar Chivukula, Dennis Foren, Kirtimaan A. Mohan +2
Scattering amplitudes involving massive spin-2 particles typically grow rapidly with energy. In this paper we demonstrate that the anomalous high-energy growth of the scattering am…
Vector-Like top quark production via a chromo-magnetic moment at the LHC
Alexander Belyaev, R. Sekhar Chivukula, Benjamin Fuks +2
Theories which provide a dynamical explanation for the large top-quark mass often include TeV-scale vector-like top-quark and bottom-quark partner states which can be potentially d…
Spin-2 KK Mode Scattering in Models with a Massive Radion
R. Sekhar Chivukula, Dennis Foren, Kirtimaan A. Mohan +2
We calculate tree-level scattering amplitudes of massive spin-2 KK particles in models of stabilized compact extra-dimensional theories. Naively introducing a mass for the radion i…
Narrow Resonances Revisited -- Simplifying Multidimensional Constraints
R. Sekhar Chivukula, Pawin Ittisamai, James Osborne +1
As we amass more LHC data, we continue to search for new and improved methods of visualizing search results, in ways that are as model-independent as possible. The simplified limit…
Massive Spin-2 Scattering Amplitudes in Extra-Dimensional Theories
R. Sekhar Chivukula, Dennis Foren, Kirtimaan A. Mohan +2
In this paper we describe in detail the computation of the scattering amplitudes of massive spin-2 Kaluza-Klein excitations in a gravitational theory with a single compact extra di…
Sum Rules for Massive Spin-2 Kaluza-Klein Elastic Scattering Amplitudes
R. Sekhar Chivukula, Dennis Foren, Kirtimaan A Mohan +2
It has recently been shown explicitly that the high-energy scattering amplitude of the longitudinal modes of massive spin-2 Kaluza Klein states in compactified 5-dimensional gravit…
Scattering Amplitudes of Massive Spin-2 Kaluza-Klein States Grow Only as
R. Sekhar Chivukula, Dennis Foren, Kirtimaan A Mohan +2
We present the results of the first complete calculation of the tree-level high-energy scattering amplitudes of the longitudinal modes of massive spin-2 Kaluza-Klein state…
The Top Quark: Past, Present, and Future
R. Sekhar Chivukula
In this talk I discuss the widespread impact of the top quark on phenomena in elementary particle physics as codified through the Standard Model (SM), its important role in motivat…
Characterizing Boosted Dijet Resonances with Jet Energy Correlators
R. Sekhar Chivukula, Kirtimaan A. Mohan, Dipan Sengupta +1
We show that Jet Energy Correlation variables can be used effectively to discover and distinguish a wide variety of boosted light dijet resonances at the LHC through sensitivity to…
Broadening the Reach of Simplified Limits on Resonances at the LHC
R. Sekhar Chivukula, Pawin Ittisamai, Kirtimaan Mohan +1
Recently, we introduced an approach for more easily interpreting searches for resonances at the LHC - and to aid in distinguishing between realistic and unrealistic alternatives fo…
anomalies and simplified limits on models at the LHC
R. Sekhar Chivukula, Joshua Isaacson, Kirtimaan A. Mohan +2
The LHCb collaboration has recently reported a 2.5 discrepancy with respect to the predicted value in a test of lepton universality in the ratio $R_{K^*}= \hbox{BR}(B \to K^* μ…
Simplified Limits on New LHC Resonances
Elizabeth H. Simmons, R. Sekhar Chivukula, Pawin Ittisamai +1
If an excess potentially heralding new physics is noticed in collider data, it would be useful to be able to compare the data with entire classes of models at once. This talk discu…
Simplified Limits on Resonances at the LHC
R. Sekhar Chivukula, Pawin Ittisamai, Kirtimaan Mohan +1
In the earliest stages of evaluating new collider data, especially if a small excess may be present, it would be useful to have a method for comparing the data with entire classes…
Direct Search Implications for a Custodially-Embedded Composite Top
R. Sekhar Chivukula, Roshan Foadi, Dennis Foren +1
We assess current experimental constraints on the bi-doublet + singlet model of top compositeness previously proposed in the literature. This model extends the standard model's spe…
Les Houches 2015: Physics at TeV colliders - new physics working group report
G. Brooijmans, C. Delaunay, A. Delgado +78
We present the activities of the 'New Physics' working group for the 'Physics at TeV Colliders' workshop (Les Houches, France, 1-19 June, 2015). Our report includes new physics stu…