Bootstrapping QCD Using Pion Scattering Amplitudes

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dc.contributor.authorGuerrieri, Andrea L. [UNESP]
dc.contributor.authorPenedones, João
dc.contributor.authorVieira, Pedro [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionÉcole Polytechnique Fédérale de Lausanne (EPFL)
dc.contributor.institutionPerimeter Institute for Theoretical Physics
dc.date.accessioned2019-10-06T16:38:01Z
dc.date.available2019-10-06T16:38:01Z
dc.date.issued2019-06-19
dc.description.abstractWe consider the S-matrix bootstrap of four-dimensional scattering amplitudes with O(3) symmetry and no bound states. We explore the allowed space of scattering lengths which parametrize the interaction strength at threshold of the various scattering channels. Next we consider an application of this formalism to pion physics. A signature of pions is that they are derivatively coupled leading to (chiral) zeros in their scattering amplitudes. In this work we explore the multidimensional space of chiral zeros positions, scattering length values, and resonance mass values. Interestingly, we encounter lakes, peninsulas, and kinks depending on which sections of this intricate multidimensional space we consider. We discuss the remarkable location where QCD seems to lie in these plots, based on various experimental and theoretical expectations.en
dc.description.affiliationInstituto de Física Teórica UNESP ICTP South American Institute for Fundamental Research, Rua Dr Bento Teobaldo Ferraz 271
dc.description.affiliationInstitute of Physics École Polytechnique Fédérale de Lausanne (EPFL), Rte de la Sorge, BSP 728
dc.description.affiliationPerimeter Institute for Theoretical Physics, 31 Caroline St N
dc.description.affiliationUnespInstituto de Física Teórica UNESP ICTP South American Institute for Fundamental Research, Rua Dr Bento Teobaldo Ferraz 271
dc.identifierhttp://dx.doi.org/10.1103/PhysRevLett.122.241604
dc.identifier.citationPhysical Review Letters, v. 122, n. 24, 2019.
dc.identifier.doi10.1103/PhysRevLett.122.241604
dc.identifier.issn1079-7114
dc.identifier.issn0031-9007
dc.identifier.scopus2-s2.0-85068260286
dc.identifier.urihttp://hdl.handle.net/11449/189357
dc.language.isoeng
dc.relation.ispartofPhysical Review Letters
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.titleBootstrapping QCD Using Pion Scattering Amplitudesen
dc.typeArtigo

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