46 citations · 238 across the 23 of their papers we have counts for
26 papers
Indications for New Higgs Bosons
Andreas Crivellin, Saiyad Ashanujjaman, Sumit Banik +2
After the Higgs discovery, the question of whether particles beyond those of the Standard Model exist is more pressing than ever. In this context, the scalar sector is particularly…
HyperPrecision: A Mathematica package for High-Precision Numerical Evaluation of Multivariate Hypergeometric Functions
Sumit Banik, Souvik Bera
In this paper, we present HyperPrecision, a Mathematica package for high-precision numerical evaluation of general Horn-type multivariate hypergeometric functions and their Laurent…
Multiple Mellin-Barnes integrals with polygamma functions
Sumit Banik, Samuel Friot
Mellin-Barnes (MB) integrals appear in various branches of physics and mathematics and are, in particular, used as a standard tool for evaluating multi-loop, multi-scale Feynman in…
Sunset integrals with up to three mass scales in chiral perturbation theory: a comparative study of the Mellin-Barnes representation technique
Balasubramanian Ananthanarayan, Sumit Banik, Véronique Bernard +3
Sunset integrals are among the simplest of two-loop integrals that appear in perturbative quantum field theories and possess up to four distinct mass scales. By means of integratio…
Two-loop anomalous dimensions for baryon-number-violating operators in SMEFT
Sumit Banik, Andreas Crivellin, Luca Naterop +1
We compute the two-loop renormalization-group equations for the baryon-number-violating dimension-six operators in the SMEFT. This includes all three gauge interactions, the Yukawa…
Reinterpretation and preservation of data and analyses in HEP
Jon Butterworth, Sabine Kraml, Harrison Prosper +145
Data from particle physics experiments are unique and are often the result of a very large investment of resources. Given the potential scientific impact of these data, which goes…
Correlating with electric dipole moments in the two Higgs doublet model in light of the diphoton excesses at 95 GeV and 152 GeV
Sumit Banik, Guglielmo Coloretti, Andreas Crivellin +1
We examine the correlations between new scalar boson decays to photons and electric dipole moments (EDMs) in the CP-violating flavor-aligned two-Higgs-doublet model (2HDM). It is c…
Anatomy of the Real Higgs Triplet Model
Saiyad Ashanujjaman, Sumit Banik, Guglielmo Coloretti +3
In this article, we examine the Standard Model extended by a real Higgs triplet, the SM. It contains a -even neutral Higgs () and two charged Higgs bosons ($Δ^\pm…
Analytic Evaluation of Multiple Mellin-Barnes Integrals
Sumit Banik, Samuel Friot
We summarize two geometrical approaches to analytically evaluate higher-fold Mellin-Barnes (MB) integrals in terms of hypergeometric functions. The first method is based on interse…
Explanation of the excesses in associated di-photon production at 152 GeV in 2HDM
Sumit Banik, Andreas Crivellin
Statistically significant excesses exist at around 152 GeV in associated di-photon production () in the sidebands of SM Higgs analyses of ATLAS (using the full run-2 dataset)…
Growing Evidence for a Higgs Triplet
Andreas Crivellin, Saiyad Ashanujjaman, Sumit Banik +3
Despite intensive searches at the LHC, no new fundamental particle has been discovered since the discovery of the 125 GeV Higgs boson. In general, a new physics discovery is challe…
Geometrical methods for the analytic evaluation of multiple Mellin-Barnes integrals
Sumit Banik, Samuel Friot
Two recently developed techniques of analytic evaluation of multifold Mellin-Barnes (MB) integrals are presented. Both approaches rest on the definition of geometrical objets conve…
Explaining the Excesses at 151.5 GeV via the Drell-Yan Production of a Higgs Triplet
Saiyad Ashanujjaman, Sumit Banik, Guglielmo Coloretti +3
The multi-lepton anomalies and searches for the associated production of a narrow resonance indicate the existence of a 151 GeV Higgs with a significance of and $>3.…
Differential Cross-Sections and New Higgses at the Electroweak Scale
Sumit Banik, Guglielmo Coloretti, Andreas Crivellin +1
ATLAS found that none of their Standard Model simulations can describe the measured differential lepton distributions in their analysis reasonably well. Therefore, we s…
Multiple Mellin-Barnes integrals and triangulations of point configurations
Sumit Banik, Samuel Friot
We present a novel technique for the analytic evaluation of multifold Mellin-Barnes (MB) integrals, which commonly appear in physics, as for instance in the calculations of multi-l…
Uncovering New Higgses in the LHC Analyses of Differential Cross Sections
Sumit Banik, Guglielmo Coloretti, Andreas Crivellin +1
Statistically significant tensions between the Standard Model (SM) predictions and the measured lepton distributions in differential top cross-sections emerged in LHC Run~1 data an…
Renormalization Group Evolution with Scalar Leptoquarks
Sumit Banik, Andreas Crivellin
Leptoquarks are theoretically well-motivated and have received increasing attention in recent years as they can explain several hints for physics beyond the Standard Model. In this…
triplet scalar as the origin of the 95 GeV excess?
Saiyad Ashanujjaman, Sumit Banik, Guglielmo Coloretti +3
We explore the possibility that an triplet scalar with hypercharge is the origin of the GeV diphoton excess. For a small mixing angle with the Standard Model…
Asymmetric di-Higgs signals of the next-to-minimal 2HDM with a symmetry
Sumit Banik, Andreas Crivellin, Syuhei Iguro +1
The two-Higgs-doublet model with a gauge symmetry (N2HDM-) has several advantages compared to the ``standard'' version (N2HDM-): It is purely based on gau…
Multiple Mellin-Barnes integrals with straight contours
Sumit Banik, Samuel Friot
We show how the conic hull method, recently developed for the analytic and non-iterative evaluation of multifold Mellin-Barnes (MB) integrals, can be extended to the case where the…
FeynGKZ: a Mathematica package for solving Feynman integrals using GKZ hypergeometric systems
B. Ananthanarayan, Sumit Banik, Souvik Bera +1
In the Lee-Pomeransky representation, Feynman integrals can be identified as a subset of Euler-Mellin integrals, which are known to satisfy Gel'fand-Kapranov-Zelevinsky (GKZ) syste…
On the Method of Brackets
B. Ananthanarayan, Sumit Banik, Samuel Friot +1
The Method of Brackets (MoB) is a technique used to compute definite integrals, that has its origin in the negative dimensional integration method. It was originally proposed for t…
Massive One-loop Conformal Feynman Integrals and Quadratic Transformations of Multiple Hypergeometric Series
B. Ananthanarayan, Sumit Banik, Samuel Friot +1
The computational technique of -fold Mellin-Barnes (MB) integrals, presented in a companion paper by the same authors, is used to derive sets of series representations of the ma…
Multiple Series Representations of -fold Mellin-Barnes Integrals
B. Ananthanarayan, Sumit Banik, Samuel Friot +1
Mellin-Barnes (MB) integrals are well-known objects appearing in many branches of mathematics and physics, ranging from hypergeometric functions theory to quantum field theory, sol…