8 papers
Measuring Mass Splittings in Baryon SU(2) Multiplets
Constantia Alexandrou, Simone Bacchio, Antonio Evangelista +2
The inclusion of isospin-breaking corrections arising from electromagnetic interactions and the up-down quark mass difference is becoming increasingly important in lattice QCD calc…
Spin and momentum fraction carried by partons in the nucleon
Constantia Alexandrou, Simone Bacchio, Jacob Finkenrath +6
We determine the momentum fraction and angular momentum carried by quarks and gluons in the proton in lattice QCD. We use four ensembles simulated with up, down, strange and charm…
Nucleon unpolarized second Mellin moments using lattice QCD ensembles with physical quark masses and in the continuum limit
Constantia Alexandrou, Simone Bacchio, Jacob Finkenrath +6
We compute the matrix elements of the energy-momentum tensor of the nucleon using four ensembles of twisted mass clover-improved fermions with the up, down, strange and charm quark…
Nucleon strange electromagnetic form factors using twisted-mass fermions at the physical point
Constantia Alexandrou, Simone Bacchio, Mathis Bode +7
We present the strange electromagnetic form factors of the nucleon using lattice QCD with twisted mass clover-improved fermions and quark masses tuned to their physical…
Strangeness of nucleons from lattice QCD
Constantia Alexandrou, Simone Bacchio, Mathis Bode +7
We present the strange electromagnetic form factors of the nucleon using lattice QCD simulations with degenerate light, a strange, and a charm quark in the sea with masses tuned to…
Nucleon strange electromagnetic form factors from lattice QCD
Constantia Alexandrou, Simone Bacchio, Mathis Bode +7
We present the nucleon strange electromagnetic form factors using four lattice QCD ensembles with twisted mass clover-improved fermions and quark masses tuned to approx…
Nucleon axial, tensor, and scalar charges and -terms in lattice QCD
Constantia Alexandrou, Simone Bacchio, Jacob Finkenrath +4
We determine the nucleon axial, scalar and tensor charges at the continuum limit by analyzing three twisted mass fermion ensembles with all quark masses tuned to approx…
Nucleon charges and -terms in lattice QCD
C. Alexandrou, S. Bacchio, J. Finkenrath +4
We determine the nucleon axial, scalar and tensor charges and the nucleon -terms using twisted mass fermions. We employ three ensembles with approximately equal physical volume…