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dc.contributor.authorWoss, Antonien
dc.contributor.authorThomas, Christopheren
dc.contributor.authorDudek, JJen
dc.contributor.authorEdwards, RGen
dc.contributor.authorWilson, Daviden
dc.date.accessioned2018-09-05T12:48:38Z
dc.date.available2018-09-05T12:48:38Z
dc.date.issued2018-07-01en
dc.identifier.issn1126-6708
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/279572
dc.description.abstractWe present the first determination of $\rho \pi$ scattering, incorporating dynamically-coupled partial-waves, using lattice QCD, a first-principles numerical approach to QCD. Considering the case of isospin-2 $\rho \pi$, we calculate partial-wave amplitudes with $J \le 3$ and determine the degree of dynamical mixing between the coupled $S$ and $D$-wave channels with $J^P=1^+$. The analysis makes use of the relationship between scattering amplitudes and the discrete spectrum of states in the finite volume lattice. Constraints on the scattering amplitudes are provided by over one hundred energy levels computed on two lattice volumes at various overall momenta and in several irreducible representations of the relevant symmetry groups. The spectra follow from variational analyses of matrices of correlations functions computed with large bases of meson-meson operators. Calculations are performed with degenerate light and strange quarks tuned to the physical strange quark mass so that $m_\pi \sim 700$ MeV, ensuring that the $\rho$ is stable against strong decay. This work demonstrates the successful application of techniques, opening the door to calculations of scattering processes that incorporate the effects of dynamically-coupled partial-waves, including those involving resonances or bound states.
dc.publisherSpringer Berlin Heidelberg
dc.rightsAttribution 4.0 International (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleDynamically-coupled partial-waves in ρπ isospin-2 scattering from lattice QCDen
dc.typeArticle
prism.issueIdentifier7en
prism.publicationDate2018en
prism.publicationNameJournal of High Energy Physicsen
prism.volume2018en
dc.identifier.doi10.17863/CAM.26944
dcterms.dateAccepted2018-06-20en
rioxxterms.versionofrecord10.1007/JHEP07(2018)043en
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2018-07-01en
dc.contributor.orcidWoss, Antoni [0000-0002-7377-8812]
dc.contributor.orcidThomas, Christopher [0000-0001-8817-4977]
dc.contributor.orcidWilson, David [0000-0003-2364-1161]
dc.identifier.eissn1029-8479
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idSTFC (ST/P000681/1)
pubs.funder-project-idSTFC (1628534)


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Attribution 4.0 International (CC BY 4.0)
Except where otherwise noted, this item's licence is described as Attribution 4.0 International (CC BY 4.0)