120 citations · 630 across the 32 of their papers we have counts for
32 papers
NNLO phase-space integrals for semi-inclusive deep-inelastic scattering
Taushif Ahmed, Saurav Goyal, Syed Mehedi Hasan +6
We evaluate the phase-space integrals that arise in double real emission diagrams for semi-inclusive deep-inelastic scattering at next-to-next-to-leading order (NNLO) in QCD. Utili…
Two-loop Vertices with Vacuum Polarization Insertion
Taushif Ahmed, Giulio Crisanti, Federico Gasparotto +2
We present the analytic evaluation of the second-order corrections to the massive form factors, due to two-loop vertex diagrams with a vacuum polarization insertion, with exact dep…
A note on quark and gluon energy-momentum tensors
Taushif Ahmed, Long Chen, Michał Czakon
We discuss the constraints on quark and gluon energy-momentum tensors in QCD that follow from the requirement of Renormalisation-Group invariance of the traces of these operators.…
On the amplitudes at two loop in QCD
Taushif Ahmed
Through this article, we show that the amplitudes for the in the presence of bottom-Higgs Yukawa coupling can be constructed, up to a few anomalous diagra…
Two-loop amplitudes for di-Higgs and di-pseudo-Higgs productions through quark annihilation in QCD
Taushif Ahmed, V. Ravindran, Aparna Sankar +1
Through this article, we present the two-loop massless QCD corrections to the production of di-Higgs and di-pseudo-Higgs boson through quark annihilation in the large top quark mas…
A pitfall in applying non-anticommuting in amplitudes
Taushif Ahmed
In computing the two-loop QCD corrections to a class of Feynman diagrams for the process in Higgs effective field theory, we discover a striking phen…
Renormalization of the flavor-singlet axial-vector current and its anomaly in dimensional regularization
Taushif Ahmed, Long Chen, Michał Czakon
The renormalization constant of the flavor-singlet axial-vector current with a non-anticommuting in dimensional regularization is determined to order in QCD wit…
Soft-virtual correction and threshold resummation for -colorless particles to fourth order in QCD: Part I
Taushif Ahmed, Ajjath A. H., Goutam Das +3
We present the general form of a universal soft-collinear distribution operator to compute the soft-virtual cross-section to next-to-next-to-next-to-next-to-leading order (NLO)…
Rapidity distribution at soft-virtual and beyond for n-colorless particles to NLO in QCD
Taushif Ahmed, Ajjath A. H., Pooja Mukherjee +2
We present a systematic framework to study the threshold contributions of the differential rapidity distribution for the production of any number of colorless particles in the hadr…
Polarized Higgs amplitudes at two loops in QCD: the interplay between vector and axial vector form factors and a pitfall in applying a non-anticommuting
Taushif Ahmed, Werner Bernreuther, Long Chen +1
We consider QCD corrections to two loops for the polarized amplitudes of Higgs boson. First we show how the polarized amplitudes of a…
Infrared structure of = 4 SYM and leading transcendentality principle in gauge theory
Taushif Ahmed, Pulak Banerjee, Amlan Chakraborty +3
We present a detailed study on the infrared structure of SYM and its connection to QCD. Calculation of collinear splitting functions helps to understand the structu…
Form factors with two operator insertions and the principle of maximal transcendentality
Taushif Ahmed, Pulak Banerjee, Amlan Chakraborty +2
We present the first calculations of two-point two-loop form factors (FFs) with a two identical operators insertion in maximally supersymmetric Yang-Mills theory. In this article,…
Four-particle scattering amplitudes in QCD at NNLO to higher orders in the dimensional regulator
Taushif Ahmed, Johannes Henn, Bernhard Mistlberger
We compute all helicity amplitudes for four-particle scattering in massless QCD with fermion flavours to next-to-next-to-leading order (NNLO) in perturbation theory. In parti…
Polarised Amplitudes and Soft-Virtual Cross Sections for at NNLO in QCD
Taushif Ahmed, A. H. Ajjath, Long Chen +3
Production of the Higgs boson, in association with a massive vector boson, , i.e., the process, plays an important role in the explorations of Higgs physics at the Larg…
The Curious Case of Leading Transcendentality: Three Point Form Factors
Taushif Ahmed, Pulak Banerjee, Amlan Chakraborty +2
Form factors are important ingredients to investigate the principle of maximal transcendentality (PMT) and to extract anomalous dimensions of local gauge invariant operators. In th…
Two-loop Doubly Massive Four-Point Amplitude Involving a half-BPS and Konishi Operator
Taushif Ahmed, Prasanna K. Dhani
The two-loop four-point amplitude of two massless SU(N) colored scalars and two color singlet operators with different virtuality described by a half-BPS and Konishi operators is c…
High energy behaviour of form factors
Taushif Ahmed, Johannes M. Henn, Matthias Steinhauser
We solve renormalization group equations that govern infrared divergences of massless and massive form factors. By comparing to recent results for planar massive three-loop and mas…
QCD Radiative Corrections to Higgs Physics
Taushif Ahmed
The central part of this thesis deals with the quantum chromodynamics (QCD) radiative corrections to some important observables associated with the Drell-Yan, scalar and pseudo-sca…
Three loop form factors of a massive spin-2 particle with nonuniversal coupling
Taushif Ahmed, Pulak Banerjee, Prasanna K. Dhani +3
We investigate the interaction of spin-2 fields with those of Standard Model in a model independent framework. We have considered interactions where the spin-2 fields couple to two…
Konishi Form Factor at Three Loop in SYM
Taushif Ahmed, Pulak Banerjee, Prasanna K. Dhani +3
We present the first results on the third order corrections to on-shell form factor (FF) of the Konishi operator in supersymmetric Yang-Mills theory using Feynman diag…
Two-loop QCD Correction to Massive Spin-2 Resonance
Taushif Ahmed, Goutam Das, Prakash Mathews +2
Two-loop QCD correction to massive spin-2 Graviton decaying to is presented considering a generic universal spin-2 coupling to the SM through the conserved…
NNLO QCD Corrections to the Drell-Yan Cross Section in Models of TeV-Scale Gravity
Taushif Ahmed, Pulak Banerjee, Prasanna K. Dhani +4
The first results on the complete next-to-next-to-leading order (NNLO) Quantum Chromodynamic (QCD) corrections to the production of di-leptons at hadron colliders in large extra di…
Pseudo-scalar Form Factors at Three Loops in QCD
Taushif Ahmed, Thomas Gehrmann, Prakash Mathews +2
The coupling of a pseudo-scalar Higgs boson to gluons is mediated through a heavy quark loop. In the limit of large quark mass, it is described by an effective Lagrangian that only…
Pseudo-scalar Higgs Boson Production at Threshold NLO and NLL QCD
Taushif Ahmed, M. C. Kumar, Prakash Mathews +2
We present the first results on the production of pseudo-scalar through gluon fusion at the LHC to NLO in QCD taking into account only soft gluon effects. We have used the effe…