106 citations · 1.3k across the 67 of their papers we have counts for
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Electroweak box diagram contribution for pion and kaon decay from lattice QCD
Jun-Sik Yoo, Tanmoy Bhattacharya, Rajan Gupta +2
One of the sensitive probes of physics beyond the standard model is the test of the unitarity of the Cabbibo-Kobyashi-Maskawa (CKM) matrix. Current analysis of the first row is bas…
Update on Flavor Diagonal Nucleon Charges
Sungwoo Park, Tanmoy Bhattacharya, Rajan Gupta +3
This talk provides an update on the calculation of matrix elements of flavor diagonal axial, scalar and tensor quark bilinear operators between the nucleon ground state. The simula…
Nucleon form factors and the pion-nucleon sigma term
Rajan Gupta, Tanmoy Bhattacharya, Vincenzo Cirigliano +8
This talk summarizes the progress made since Lattice 2021 in understanding and controlling the contributions of towers of multihadron excited states with mass gaps starting lower t…
Electroweak box diagrams on the lattice for pion and neutron decay
Jun-Sik Yoo, Tanmoy Bhattacharya, Rajan Gupta +2
CKM matrix is unitary by construction in the standard model(SM). The recent analyses on the first row of CKM matrix show tension with unitarity. Nonperturbative calcu…
Flavor Diagonal Nucleon Charges
Sungwoo Park, Tanmoy Bhattacharya, Rajan Gupta +4
This talk provides an update on the calculation of matrix elements of flavor diagonal axial, scalar and tensor quark bilinear operators between the nucleon ground state. The simula…
Excited states and precision results for nucleon charges and form factors
Rajan Gupta, Tanmoy Bhattacharya, Vincenzo Cirigliano +8
The exponentially falling signal-to-noise ratio in all nucleon correlation functions, and the presence of towers of multihadron excited states with relatively small mass gaps makes…
Nucleon isovector momentum fraction, helicity and transversity moment using Lattice QCD
Santanu Mondal, Tanmoy Bhattacharya, Rajan Gupta +5
We present our recent high precision calculations (Phys. Rev. D102 (2020) no.5, 054512 and JHEP 04 (2021) 044, JHEP 21 (2020) 004) of the first moment of nucleon isovector polarize…
Progress in the determination of Mellin moments of the pion LCDA using the HOPE method
William Detmold, Anthony V. Grebe, Issaku Kanamori +4
The pion light-cone distribution amplitude (LCDA) is a central non-perturbative object of interest for the calculation of high-energy exclusive processes in quantum chromodynamics.…
Strange and charm contributions to nucleon charges and moments
Rui Zhang, Tanmoy Bhattacharya, Rajan Gupta +4
We present preliminary results for strange and charm contributions to nucleon charges and moments. The scalar, axial and tensor charges, and unpolarized first moments are calculate…
Parton physics from a heavy-quark operator product expansion: Lattice QCD calculation of the second moment of the pion distribution amplitude
William Detmold, Anthony Grebe, Issaku Kanamori +4
The pion light-cone distribution amplitude (LCDA) is a central non-perturbative object of interest for high-energy exclusive processes in quantum chromodynamics. In this article, t…
Precision Nucleon Charges and Form Factors Using 2+1-flavor Lattice QCD
Sungwoo Park, Rajan Gupta, Boram Yoon +5
We present high statistics results for the isovector nucleon charges and form factors using seven ensembles of 2+1-flavor Wilson-clover fermions. The axial and pseudoscalar form fa…
Nucleon Momentum Fraction, Helicity and Transversity from 2+1-flavor Lattice QCD
Santanu Mondal, Rajan Gupta, Sungwoo Park +4
High statistics results for the isovector momentum fraction, , helicity moment, , and the transversity moment, $\langle x\rangle…
A Preliminary Determination of the Second Mellin Moment of the Pion's Distribution Amplitude Using the Heavy Quark Operator Product Expansion
William Detmold, Anthony V. Grebe, Issaku Kanamori +4
We explore the feasibility of determining Mellin moments of the pion's light cone distribution amplitude using the heavy quark operator product expansion (HOPE) method. As the firs…
Moments of nucleon isovector structure functions in -flavor QCD
Santanu Mondal, Rajan Gupta, Sungwoo Park +3
We present results on the isovector momentum fraction, , helicity moment, , and the transversity moment, $\langle x \rangle_{δu-…
Moments of pion distribution amplitude using operator product expansion on the lattice
William Detmold, Issaku Kanamori, C. -J. David Lin +2
We report an exploratory study of the current-current matrix elements that are relevant to the extraction of moments of the pion light-cone distribution amplitude, employing the me…
Fate of the conformal fixed point with twelve massless fermions and SU(3) gauge group
Zoltan Fodor, Kieran Holland, Julius Kuti +3
We report new results on the conformal properties of an important strongly coupled gauge theory, a building block of composite Higgs models beyond the Standard Model. With twelve m…
Status of a minimal composite Higgs theory
Zoltan Fodor, Kieran Holland, Julius Kuti +3
We analyze three sets of gauge ensembles in our extended physics program of a particularly important BSM gauge theory with a fermion doublet in the two-index symmetric (sextet) rep…
New approach to the Dirac spectral density in lattice gauge theory applications
Zoltan Fodor, Kieran Holland, Julius Kuti +3
We report tests and results from a new approach to the spectral density and the mode number distribution of the Dirac operator in lattice gauge theories. The algorithm generates th…
Electroweak interactions and dark baryons in the sextet BSM model with a composite Higgs particle
Zoltan Fodor, Kieran Holland, Julius Kuti +3
The Electroweak interactions of a strongly coupled gauge theory are discussed with outlook beyond the Standard Model (BSM) under global and gauge anomaly constraints. The theory is…
Running coupling of the sextet composite Higgs model
Zoltan Fodor, Kieran Holland, Julius Kuti +3
The scale-dependent renormalized coupling of SU(3) gauge theory coupled to Nf = 2 flavors of massless Dirac flavors in the sextet representation is presented in the range 0 < g^2 <…
The running coupling of the minimal sextet composite Higgs model
Zoltan Fodor, Kieran Holland, Julius Kuti +3
We compute the renormalized running coupling of SU(3) gauge theory coupled to N_f = 2 flavors of massless Dirac fermions in the 2-index-symmetric (sextet) representation. This mode…
Toward the minimal realization of a light composite Higgs
Zoltan Fodor, Kieran Holland, Julius Kuti +3
Work in progress is reported on a particularly interesting gauge theory with a fermion doublet in the two-index symmetric (sextet) representation of the SU(3) color gauge group. Ex…
The running coupling of 8 flavors and 3 colors
Zoltan Fodor, Kieran Holland, Julius Kuti +3
We compute the renormalized running coupling of SU(3) gauge theory coupled to N_f = 8 flavors of massless fundamental Dirac fermions. The recently proposed finite volume gradient f…
Baryon spectrum in the composite sextet model
Zoltan Fodor, Kieran Holland, Julius Kuti +3
The strongly coupled near-conformal gauge theory with two fermion flavors in the two-index symmetric (sextet) representation of SU(3) is potentially a minimal realization of the co…