0000000000238311

AUTHOR

Parikshit Junnarkar

showing 6 related works from this author

Nucleon isovector charges and twist-2 matrix elements with Nf=2+1 dynamical Wilson quarks

2019

We present results from a lattice QCD study of nucleon matrix elements at vanishing momentum transfer for local and twist-2 isovector operator insertions. Computations are performed on gauge ensembles with nonperturbatively improved ${N}_{f}=2+1$ Wilson fermions, covering four values of the lattice spacing and pion masses down to ${M}_{\ensuremath{\pi}}\ensuremath{\approx}200\text{ }\text{ }\mathrm{MeV}$. Several source-sink separations (typically $\ensuremath{\sim}1.0$ to $\ensuremath{\sim}1.5\text{ }\text{ }\mathrm{fm}$) allow us to assess excited-state contamination. Results on individual ensembles are obtained from simultaneous two-state fits across all observables and all available sou…

PhysicsIsovector010308 nuclear & particles physicsHigh Energy Physics::LatticeLattice field theoryLattice QCD01 natural sciencesPionLattice constantLattice (order)0103 physical sciencesHigh Energy Physics::ExperimentTwist010306 general physicsNucleonMathematical physicsPhysical Review D
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Isovector electromagnetic form factors of the nucleon from lattice QCD and the proton radius puzzle

2021

Physical review / D 103(9), 094522 (2021). doi:10.1103/PhysRevD.103.094522

PhysicsParticle physicsChiral perturbation theoryNuclear TheoryIsovector010308 nuclear & particles physicsHigh Energy Physics::LatticeHigh Energy Physics - Lattice (hep-lat)Lattice (group)Form factor (quantum field theory)FOS: Physical sciencesOrder (ring theory)Lattice QCD01 natural sciences530Nuclear Theory (nucl-th)High Energy Physics - PhenomenologyHigh Energy Physics - LatticeHigh Energy Physics - Phenomenology (hep-ph)Charge radius0103 physical sciencesddc:530Nuclear Experiment010306 general physicsNucleon
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Lattice QCD study of the $H$ dibaryon using hexaquark and two-baryon interpolators

2019

Physical review / D 99(7), 074505 (2019). doi:10.1103/PhysRevD.99.074505

Particle physicsnucl-thNuclear TheoryHigh Energy Physics::LatticeNuclear TheoryLattice field theoryFOS: Physical scienceshep-latCorrelation function (quantum field theory)530Computer Science::Digital Libraries01 natural sciencesNuclear Theory (nucl-th)High Energy Physics - Phenomenology (hep-ph)High Energy Physics - Lattice0103 physical sciencesBound stateddc:530010306 general physicsParticle Physics - PhenomenologyQuantum chromodynamicsPhysics010308 nuclear & particles physicsHigh Energy Physics - Lattice (hep-lat)hep-phParticle Physics - LatticeLattice QCDRest frameBaryonHigh Energy Physics - PhenomenologyNuclear Physics - TheoryIsospin
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Electromagnetic form factors and axial charge of the nucleon from Nf = 2 + 1 Wilson fermions

2018

We present an update on our determination of the electromagnetic form factors and axial charge of the nucleon from theNf= 2 + 1 CLS ensembles with increased statistics and an additional finer lattice spacing. We also investigate the impact ofO(a)-improvement of the currents.

PhysicsCLs upper limitsLattice constant010308 nuclear & particles physicsQuantum electrodynamicsPhysicsQC1-9990103 physical sciencesCharge (physics)Fermion010306 general physicsNucleon01 natural sciencesEPJ Web of Conferences
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Search for the H-Dibaryon in two flavor Lattice QCD

2016

Parikshit Junnarkar∗, Anthony Francis, Jeremy Green, Chuan Miao, Thomas Rae, Hartmut Wittig Helmholtz-Institut Mainz, Institut fur Kernphysik, and PRISMA Cluster of Excellence, Johannes Gutenberg-Universitat Mainz, Germany Department of Physics and Astronomy, York University, Toronto Canada Bergische Universitat Wuppertal, Germany E-mail: junnarka@kph.uni-mainz.de, afranc@yorku.ca, green@kph.uni-mainz.de, chuan@kph.uni-mainz.de, thrae@uni-wuppertal.de, wittig@kph.uni-mainz.de

Lattice QCDHumanitiesProceedings of The 33rd International Symposium on Lattice Field Theory — PoS(LATTICE 2015)
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Nucleon isovector charges and twist-2 matrix elements with Nf=2+1 dynamical Wilson quarks

2019

We present results from a lattice QCD study of nucleon matrix elements at vanishing momentum transfer for local and twist-2 isovector operator insertions. Computations are performed on gauge ensembles with nonperturbatively improved Nf=2+1 Wilson fermions, covering four values of the lattice spacing and pion masses down to Mπ≈200 MeV. Several source-sink separations (typically ∼1.0 to ∼1.5 fm) allow us to assess excited-state contamination. Results on individual ensembles are obtained from simultaneous two-state fits across all observables and all available source-sink separations with the energy gap as a common fit parameter. Renormalization has been performed nonperturbatively using the R…

Physical Review
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