69 citations · 626 across the 34 of their papers we have counts for
35 papers
Hilbert Series of Pseudoscalar Mesons: Operators and Sum Rules
Joydeep Chakrabortty, Sabyasachi Chakraborty, Siddhartha Karmakar
We construct the complete non-redundant basis of operators built from pseudoscalar mesons using the Hilbert series method, subject to the global flavor symmetry $SU(3)_L \times SU(…
A Phenomenological Model of Mesons for Charged Current Weak Decays
Sabyasachi Chakraborty, Namit Mahajan, Tuhin S. Roy
We propose a phenomenological model of pseudo scalar mesons to describe charged-current weak decays of heavy-light mesons. The approach combines chiral symmetry in the light sector…
Rational Q-systems at Root of Unity I. Closed Chains
Jue Hou, Yunfeng Jiang, Yuan Miao
The solution of Bethe ansatz equations for XXZ spin chain with the parameter being a root of unity is infamously subtle. In this work, we develop the rational -system for th…
Anomaly induced cooling of Neutron Stars: A Standard Model contribution
Sabyasachi Chakraborty, Aritra Gupta, Miguel Vanvlasselaer
Young neutron stars cool via the emission of neutrinos from their core. A precise understanding of all the different processes producing neutrinos in the hot and degenerate matter…
Stereo-Electronic Factors Influencing the Stability of Hydroperoxyalkyl Radicals: Transferability of Chemical Trends across Hydrocarbons and ab initio Methods
Saurabh Chandra Kandpal, Kgalaletso P. Otukile, Shweta Jindal +5
The hydroperoxyalkyl radicals (.QOOH) are known to play a significant role in combustion and tropospheric processes, yet their direct spectroscopic detection remains challenging. I…
Ultra-relativistic bubbles from the simplest Higgs portal and their cosmological consequences
Aleksandr Azatov, Giulio Barni, Sabyasachi Chakraborty +2
We analyze the phase transitions in the minimal extension of the SM with a real singlet scalar field. The novelty of our study is that we identify and analyze in details the region…
Understanding the role of intramolecular ion-pair interactions in conformational stability using an ab initio thermodynamic cycle
Sabyasachi Chakraborty, Kalyaneswar Mandal, Raghunathan Ramakrishnan
Intramolecular ion-pair interactions yield shape and functionality to many molecules. With proper orientation, these interactions overcome steric factors and are responsible for th…
Displaced Searches for Light Vector Bosons at Belle II
Triparno Bandyopadhyay, Sabyasachi Chakraborty, Sokratis Trifinopoulos
With a design luminosity of 50 ab and detectors with tracking capabilities extending beyond 1 m, the Belle II experiment is the perfect laboratory for the search of particle…
Data-Driven Modeling of S0 -> S1 Excitation Energy in the BODIPY Chemical Space: High-Throughput Computation, Quantum Machine Learning, and Inverse Design
Amit Gupta, Sabyasachi Chakraborty, Debashree Ghosh +1
Derivatives of BODIPY are popular fluorophores due to their synthetic feasibility, structural rigidity, high quantum yield, and tunable spectroscopic properties. While the characte…
Resolution-vs.-Accuracy Dilemma in Machine Learning Modeling of Electronic Excitation Spectra
Prakriti Kayastha, Sabyasachi Chakraborty, Raghunathan Ramakrishnan
In this study, we explore the potential of machine learning for modeling molecular electronic spectral intensities as a continuous function in a given wavelength range. Since prese…
Heavy QCD Axion at Belle II: Displaced and Prompt Signals
Emilie Bertholet, Sabyasachi Chakraborty, Vazha Loladze +3
The QCD axion is a well-motivated addition to the standard model to solve the strong problem. If the axion acquires mass dominantly from a hidden sector, it can be as heavy…
Composite neutrinos and the QCD axion: baryogenesis, dark matter, small Dirac neutrino masses, and vanishing neutron EDM
Sabyasachi Chakraborty, Tae Hyun Jung, Takemichi Okui
We consider a chiral gauge theory from which light composite Dirac neutrinos dynamically emerge, augmented by a QCD axion to solve the strong CP problem. We show that an interplay…
Heavy QCD Axion in transition: Enhanced Limits and Projections
Sabyasachi Chakraborty, Manfred Kraus, Vazha Loladze +2
We study a "heavy" QCD axion whose coupling to the standard model is dominated by but with . This is well motivated as it can solve the str…
Troubleshooting Unstable Molecules in Chemical Space
Salini Senthil, Sabyasachi Chakraborty, Raghunathan Ramakrishnan
A key challenge in automated chemical compound space explorations is ensuring veracity in minimum energy geometries---to preserve intended bonding connectivities. We discuss an ite…
A solar origin of the XENON1T excess without stellar cooling problems
Sabyasachi Chakraborty, Tae Hyun Jung, Vazha Loladze +2
Solar interpretations of the recent XENON1T excess events, such as axion or dark photon emissions from the sun, are thought to be at odds with stellar cooling bounds from the horiz…
Revving up 13C NMR shielding predictions across chemical space: Benchmarks for atoms-in-molecules kernel machine learning with new data for 134 kilo molecules
Amit Gupta, Sabyasachi Chakraborty, Raghunathan Ramakrishnan
The requirement for accelerated and quantitatively accurate screening of nuclear magnetic resonance spectra across the small molecules chemical compound space is two-fold: (1) a ro…
Critical Benchmarking of the G4(MP2) Model, the Correlation Consistent Composite Approach and Popular Density Functional Approximations on a Probabilistically Pruned Benchmark Dataset of Formation Enthalpies
Sambit Kumar Das, Sabyasachi Chakraborty, Raghunathan Ramakrishnan
First-principles calculation of the standard formation enthalpy, (298K), in such large scale as required by chemical space explorations, is amenable only with density…
Topics in gravity SCET: the diff Wilson lines and reparametrization invariance
Sabyasachi Chakraborty, Takemichi Okui, Arash Yunesi
Two topics in soft collinear effective theory (SCET) for gravitational interactions are explored. First, the collinear Wilson lines---necessary building blocks for maintaining mult…
A radiatively generated source of flavor universal scalar soft masses
Sabyasachi Chakraborty, Tuhin S. Roy
We report that models of electroweak supersymmetry with gaugino mass unification and sequestered scalar masses can still produce viable spectra, as long as we include a set of non-…
The Chemical Space of B, N-substituted Polycyclic Aromatic Hydrocarbons: Combinatorial Enumeration and High-Throughput First-Principles Modeling
Sabyasachi Chakraborty, Prakriti Kayastha, Raghunathan Ramakrishnan
Combinatorial introduction of heteroatoms in the two-dimensional framework of aromatic hydrocarbons opens up possibilities to design compound libraries exhibiting desirable photovo…
Fat Jet Signature of a Heavy Neutrino at Lepton Collider
Sabyasachi Chakraborty, Manimala Mitra, Sujay Shil
We explore the discovery prospect of a very heavy neutrino at the proposed collider for two different c.m.energies TeV and 3 TeV. We consider production of…
Charting generalized supersoft supersymmetry
Sabyasachi Chakraborty, Adam Martin, Tuhin S. Roy
Without any shred of evidence for new physics from LHC, the last hiding spots of natural electroweak supersymmetry seem to lie either in compressed spectra or in spectra where scal…
Constraining compressed versions of MUED and MSSM using soft tracks at the LHC
Sabyasachi Chakraborty, Saurabh Niyogi, K. Sridhar
A compressed spectrum is an anticipated hideout for many beyond standard model scenarios. Such a spectrum naturally arises in the minimal universal extra dimension framework and al…
Addressing and neutrino mixing in a class of models
Disha Bhatia, Sabyasachi Chakraborty, Amol Dighe
We present a class of minimal models as a plausible solution to the anomaly that can also help reproduce the neutrino mixing pattern. The symmetries and the correspo…