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@INPROCEEDINGS{Alexandrou:474784,
      author       = {Alexandrou, Constantia and Bacchio, Simone and
                      Constantinou, Martha and Finkenrath, Jacob and
                      Hadjiyiannakou, Kyriakos and Jansen, Karl and Koutsou,
                      Giannis and Vaquero, Alejandro},
      title        = {{N}ucleon form factors from ${N}_f$=2+1+1 twisted mass
                      {QCD} at the physical point},
      journal      = {Proceedings of Science / International School for Advanced
                      Studies},
      volume       = {(LATTICE2021)},
      issn         = {1824-8039},
      address      = {Trieste},
      publisher    = {SISSA},
      reportid     = {PUBDB-2022-00991, arXiv:2112.06750},
      series       = {1989580},
      pages        = {250},
      year         = {2022},
      note         = {12 pages, 10 figures, 2 tables; proceedings of the 38th
                      International Symposium on Lattice Field Theory
                      (LATTICE2021), 26th-30th July, 2021,
                      Zoom/Gather@Massachusetts Institute of Technology},
      abstract     = {We present the nucleon axial and electromagnetic form
                      factors using $N_\textrm{f}$=2+1+1 ensembles of twisted mass
                      fermions with clover improvement and with masses tuned to
                      their physical values. Excited state effects are studied
                      using several sink-source time separations in the range 0.8
                      fm - 1.6 fm, exponentially increasing statistics with the
                      separation such that statistical errors remain approximately
                      constant. In addition, quark loop disconnected diagrams are
                      included in order to extract the isoscalar axial form
                      factors and the proton and neutron electromagnetic form
                      factors, as well as their strange-quark contributions. The
                      radii and moments are extracted by modelling the $Q^2$
                      dependence, including using the so-called $z$-expansion. A
                      preliminary assessment of lattice cut-off effects is
                      presented using two lattice spacings directly at the
                      physical point.},
      month         = {Jul},
      date          = {2021-07-26},
      organization  = {38th International Symposium on
                       Lattice Field Theory ,
                       Zoom/Gather@Massachusetts Institute of
                       Technology (USA), 26 Jul 2021 - 30 Jul
                       2021},
      keywords     = {form factor: electromagnetic (INSPIRE) / mass: twist
                      (INSPIRE) / form factor: axial (INSPIRE) / fermion: mass:
                      twist (INSPIRE) / nucleon: form factor (INSPIRE) / error:
                      statistical (INSPIRE) / lattice (INSPIRE) / clover (INSPIRE)
                      / statistics (INSPIRE) / quantum chromodynamics (INSPIRE) /
                      isoscalar (INSPIRE) / excited state (INSPIRE) / quark
                      (INSPIRE)},
      cin          = {$Z_ZPPT$ / ZEU-THEO},
      ddc          = {530},
      cid          = {$I:(DE-H253)Z_ZPPT-20210408$ /
                      I:(DE-H253)ZEU-THEO-20120731},
      pnm          = {611 - Fundamental Particles and Forces (POF4-611)},
      pid          = {G:(DE-HGF)POF4-611},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)16 / PUB:(DE-HGF)8 / PUB:(DE-HGF)7},
      eprint       = {2112.06750},
      howpublished = {arXiv:2112.06750},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2112.06750;\%\%$},
      doi          = {10.22323/1.396.0250},
      url          = {https://bib-pubdb1.desy.de/record/474784},
}