Nucleon form factors from $N_f$=2+1+1 twisted mass QCD at the physical point

Autor: Alexandrou, Constantia, Bacchio, Simone, Constantinou, Martha, Finkenrath, Jacob, Hadjiyiannakou, Kyriakos, Jansen, Karl, Koutsou, Giannis, Vaquero, Alejandro

Publikováno v: Proceedings of Science / International School for Advanced Studies (LATTICE2021), 250 (2022). doi:10.22323/1.396.0250
38th International Symposium on Lattice Field Theory, (LATTICE2021), Zoom/Gather@Massachusetts Institute of Technology, USA, 2021-07-26-2021-07-30

38th International Symposium on Lattice Field Theory , (LATTICE2021), Zoom/Gather@Massachusetts Institute of Technology, USA, 26 Jul 2021 - 30 Jul 2021; Proceedings of Science / International School for Advanced Studies (LATTICE2021), 250 (2022). doi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c55fff52b9cae8945d0badd85d586cbe
http://arxiv.org/abs/2112.06750

Model-independent extraction of two-photon effects in elastic electron–proton scattering

Autor: Hans-Werner Hammer, Ulf-G. Meißner, M.A. Belushkin

Publikováno v: Physics letters / B 658, 138-142 (2008). doi:10.1016/j.physletb.2007.10.031

We address the discrepancy between the Rosenbluth and polarization transfer data for the electromagnetic form factors of the nucleon. Assuming that the effect of two-photon corrections on the polarization transfer data is negligible, we obtain a mode

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5534c6b3e77035d8ae5e5c03b8dce01
https://doi.org/10.1016/j.physletb.2007.10.031

Magnetic form factors of the octet baryons from lattice QCD and chiral extrapolation

Autor: Shanahan, P. E., Horsley, R., CSSM Collaboration, QCDSF/UKQCD Collaboration, Nakamura, Y., Pleiter, D., Rakow, P. E. L., Schierholz, G., Stüben, H., Thomas, A. W., Young, R. D., Zanotti, J. M.

Publikováno v: Physical review / D 89(7), 074511 (2014). doi:10.1103/PhysRevD.89.074511

We present a 2+1--flavor lattice QCD calculation of the electromagnetic Dirac and Pauli form factors of the octet baryons. The magnetic Sachs form factor is extrapolated at six fixed values of $Q^2$ to the physical pseudoscalar masses and infinite vo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f34ae19e08949dfb10f79b2bb3944292
http://arxiv.org/abs/1401.5862

Indirect determination of the strange nucleon form factors from lattice QCD

Autor: Shanahan, P. E., Horsley, R., Nakamura, Y., Pleiter, D., Rakow, P. E. L., Schierholz, G., Stüben, H., Thomas, A. W., Young, R. D., Zanotti, J. M.

The strange contribution to the electric and magnetic form factors of the nucleon is determined at a range of discrete values of ${Q}^{2}$ up to $1.4\text{}\text{}{\mathrm{GeV}}^{2}$. This is done by combining a recent analysis of lattice QCD results

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______1108::0a14f67700799453664ea260b3f772ad
https://bib-pubdb1.desy.de/record/168716

Infrared regularization with vector mesons and baryons

Autor: Peter C. Bruns, Ulf-G. Meißner

Publikováno v: The European physical journal / C 58, 407-422 (2008). doi:10.1140/epjc/s10052-008-0775-3

We extend the method of infrared regularization to spin-1 fields coupled to baryons. As an application, we discuss the axial form factor of the nucleon.
27 pages, 2 figures

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0784d74bfb330a5c5d55fe9306f30e5
http://arxiv.org/abs/0808.3174