000016110 001__ 16110
000016110 005__ 20180228130625.0
000016110 022__ $$a0370-2693
000016110 0247_ $$2DOI$$a10.1016/j.physletb.2016.06.038$$t2016-06-27T14:34:21Z
000016110 100__ $$aHoferichter, Martin$$mmhofer@uw.edu$$vInstitute for Nuclear Theory, University of Washington, Seattle, WA, 98195-1550, USA$$wUSA
000016110 245__ $$aRemarks on the pion–nucleon σ -term
000016110 260__ $$bElsevier$$c2017-10-23
000016110 520__ $$9Elsevier$$aThe pion–nucleon σ -term can be stringently constrained by the combination of analyticity, unitarity, and crossing symmetry with phenomenological information on the pion–nucleon scattering lengths. Recently, lattice calculations at the physical point have been reported that find lower values by about 3 σ with respect to the phenomenological determination. We point out that a lattice measurement of the pion–nucleon scattering lengths could help resolve the situation by testing the values extracted from spectroscopy measurements in pionic atoms.
000016110 540__ $$aCC-BY-3.0$$uhttp://creativecommons.org/licenses/by/3.0/
000016110 542__ $$fThe Author(s)
000016110 592__ $$a2016-06-21
000016110 6531_ $$9author$$aPion–baryon interactions
000016110 6531_ $$9author$$aDispersion relations
000016110 6531_ $$9author$$aChiral Lagrangians
000016110 6531_ $$9author$$aChiral symmetries
000016110 700__ $$aRuiz de Elvira, Jacobo$$vHelmholtz-Institut für Strahlen- und Kernphysik (Theorie), Bethe Center for Theoretical Physics, Universität Bonn, Bonn, D-53115, Germany$$wGermany
000016110 700__ $$aKubis, Bastian$$vHelmholtz-Institut für Strahlen- und Kernphysik (Theorie), Bethe Center for Theoretical Physics, Universität Bonn, Bonn, D-53115, Germany$$wGermany
000016110 700__ $$aMeißner, Ulf-G.$$vInstitut für Kernphysik, Institute for Advanced Simulation, Jülich Center for Hadron Physics, JARA-HPC, JARA-FAME, Forschungszentrum Jülich, Jülich, D-52425, Germany$$vHelmholtz-Institut für Strahlen- und Kernphysik (Theorie), Bethe Center for Theoretical Physics, Universität Bonn, Bonn, D-53115, Germany$$wGermany
000016110 773__ $$pPhysics letters B$$y2016
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