73 citations · 276 across the 23 of their papers we have counts for
24 papers
Sifting composite from elementary models at FCCee and CePC
G. Cacciapaglia, A. Deandrea, A. M. Iyer +1
New Physics models with either an elementary or composite origin are often associated with a similar imprint in a direct search at colliders, case in point being the production of…
Anatomy of kaon decays and prospects for lepton flavour universality violation
G. D'Ambrosio, A. M. Iyer, F. Mahmoudi +1
The kaon sector is characterised by several processes which are under active investigation across different experiments. In this work, we present the global picture that emerges fr…
Tera-Zooming in on light (composite) axion-like particles
G. Cacciapaglia, A. Deandrea, A. M. Iyer +1
The Tera-Z phase of future colliders, FCC-ee and CepC, is a goldmine for exploring portal physics. We focus on axion-like particles (ALPs) that can be produced via $Z…
Exploring the sensitivity of hadron colliders to non-universality in heavy neutral currents
F. Conventi, G. D'Ambrosio, A. M. Iyer +1
We present sensitivity projections for discovering a heavy resonance decaying to electron and muon pairs and for probing the charged lepton non-universality in such decays at the H…
Gluon-Photon Signatures for color octet at the LHC (and beyond)
G. Cacciapaglia, A. Deandrea, T. Flacke +1
We consider a color octet scalar particle and its exotic decay in the channel gluon- using an effective Lagrangian description for its strong and electromagnetic interactions. S…
On axials and pseudoscalars in the hadronic light-by-light contribution to the muon
Luigi Cappiello, Oscar Cata, Giancarlo D'Ambrosio +2
Despite recent developments, there are a number of conceptual issues on the hadronic light-by-light (HLbL) contribution to the muon which remain unresolved. One of the most…
Confronting anomalies with low energy parity violation
G. D'Ambrosio, A. M. Iyer, F. Piccinini +1
Indirect searches have the potential to probe scales beyond the realm of direct searches. In this letter we consider the implications of two parity violating experiments: weak char…
Unearthing the electroweak structure of warped 5D models
Abhishek M. Iyer, K. Sridhar
Heavy charged bosons, with masses in the range of a few TeV, are a characteristic of warped extra-dimensional models with bulk gauge fields. Rendering the latter consistent with el…
anomalies: From warped models to colliders
Abhishek M. Iyer
We address the anomalies in the semi leptonic decays of mesons in a warped custodial framework. Two possible solutions of lepton non-universality are discussed: A) The muon sin…
Flavour issues in warped custodial models: anomalies and rare decays
Giancarlo D'Ambrosio, Abhishek M. Iyer
We explore the flavour structure of custodial Randall-Sundrum (RS) models in the context of the recently observed deviations in the decay of the mesons. The anomalies in the $b…
Vector-like quarks and heavy coloured bosons at the LHC
A. Deandrea, A. M. Iyer
We investigate the production of heavy coloured scalars and vectors and their relevance at LHC for the study of vector-like quarks (). These coloured states () are present in…
A Framework for Finding Anomalous Objects at the LHC
Amit Chakraborty, Abhishek M. Iyer, Tuhin S. Roy
Search for new physics events at the LHC mostly rely on the assumption that the events are characterized in terms of standard-reconstructed objects such as isolated photons, lepton…
Dissecting Multi-Photon Resonances at the Large Hadron Collider
B. C. Allanach, D. Bhatia, A. M. Iyer
We examine the phenomenology of the production, at the 13 TeV Large Hadron Collider (LHC), of a heavy resonance , which decays via other new on-shell particles into multi- (…
Dissecting new physics models through kinematic edges
Abhishek M. Iyer, Ushoshi Maitra
Kinematic edges in the invariant mass distributions of different final state particles are typically a signal of new physics. In this work we propose a scenario wherein these edges…
Warped Parity Violation
B. C. Allanach, A. M. Iyer, K. Sridhar
We consider a modified Randall-Sundrum (RS) framework between the Planck scale and the GUT scale. In this scenario, RS works as a theory of flavour and not as a solution to the hie…
Constraints on dark matter annihilation to fermions and a photon
Debtosh Chowdhury, Abhishek M. Iyer, Ranjan Laha
We consider Majorana dark matter annihilation to fermion - anti-fermion pair and a photon in the effective field theory paradigm, by introducing dimension 6 and dimension 8 operato…
Kaluza-Klein gluon + jets associated production at the Large Hadron Collider
A. M. Iyer, F. Mahmoudi, N. Manglani +1
The Kaluza-Klein excitations of gluons offer the exciting possibility of probing bulk Randall-Sundrum (RS) models. In these bulk models either a custodial symmetry or a deformation…
Looking for lepton flavour violation in supersymmetry at the LHC
Monoranjan Guchait, Abhishek M. Iyer, Rickmoy Samanta
We consider models of supersymmetry which can incorporate sizeable mixing between different generations of sfermions. While the mixing is constrained by the non-observation of vari…
Bulk RS models, Electroweak Precision tests and the 125 GeV Higgs
Abhishek M. Iyer, K. Sridhar, Sudhir K. Vempati
We present upto date electroweak fits of various Randall Sundrum (RS) models. We consider the bulk RS model, deformed RS and the custodial RS models. For the bulk RS case we find t…
Gravitational rescue of minimal gauge mediation
Abhishek M. Iyer, V Suryanarayana Mummidi, Sudhir K. Vempati
Gravity mediation supersymmetry breaking become comparable to gauge mediated supersymmetry breaking contributions when messenger masses are close to the GUT scale. By suitably tuni…
Revisiting neutrino masses from Planck scale operators
Abhishek M Iyer
Planck scale lepton number violation is an interesting and natural possibility to explain non-zero neutrino masses. We consider such operators in the context of Randall-Sundrum (RS…
Bulk Majorana mass terms and Dirac neutrinos in Randall Sundrum Model
Abhishek M Iyer, Sudhir K Vempati
We present a novel scheme where Dirac neutrinos are realized even if lepton number violating Majorana mass terms are present. The setup is the Randall-Sundrum framework with bulk r…
Warped Alternatives to Froggatt-Nielsen Models
Abhishek M Iyer, Sudhir K Vempati
We consider Randall-Sundrum set up (RS) to be a theory of flavour, as an alternative to Froggatt-Nielsen models instead of as a solution to the hierarchy problem. We consider a mod…
Lepton Masses and Flavor Violation in Randall Sundrum Model
Abhishek M. Iyer, Sudhir K. Vempati
Lepton masses and mixing angles via localization of 5D fields in the bulk are revisited in the context of Randall-Sundrum models. The Higgs is assumed to be localized on the IR bra…