1⁻⁺ exotic meson at light quark masses
| dc.contributor.author | Hedditch, J. | |
| dc.contributor.author | Kamleh, W. | |
| dc.contributor.author | Lasscock, B. | |
| dc.contributor.author | Leinweber, D. | |
| dc.contributor.author | Williams, A. | |
| dc.date.issued | 2005 | |
| dc.description.abstract | The mass of the 1⁻⁺ exotic meson, created with hybrid interpolating fields, is explored in numerical simulations of quenched QCD on large (20³×40) lattices to obtain good control of statistical and finite volume errors. Using the Fat-Link Irrelevant Clover (FLIC) fermion action, the properties of the 1⁻⁺ are investigated at light quark masses approaching 25 MeV (mπ/mρ≃1/3). Under the standard assumption that the coupling to the quenched a1η′ channel comes with a negative metric, our results indicate that the 1-+ exotic exhibits significant curvature close to the chiral limit, suggesting previous linear extrapolations have overestimated the mass of the 1⁻⁺. We find for the first time in lattice studies a 1⁻⁺ mass consistent with the π1(1600) candidate. We also find a strangeness ±1 JP=1- state with a mass close to 2 GeV. | |
| dc.description.statementofresponsibility | J. N. Hedditch, W. Kamleh, B. G. Lasscock, D. B. Leinweber, A. G. Williams and J.M. Zanotti | |
| dc.identifier.citation | Physical Review D: Particles, Fields, Gravitation and Cosmology, 2005; 72(11):114507-1-114507-8 | |
| dc.identifier.doi | 10.1103/PhysRevD.72.114507 | |
| dc.identifier.issn | 1550-7998 | |
| dc.identifier.issn | 0556-2821 | |
| dc.identifier.orcid | Kamleh, W. [0000-0002-6177-5366] | |
| dc.identifier.orcid | Leinweber, D. [0000-0002-4745-6027] | |
| dc.identifier.orcid | Williams, A. [0000-0002-1472-1592] | |
| dc.identifier.uri | http://hdl.handle.net/2440/17575 | |
| dc.language.iso | en | |
| dc.publisher | American Physical Soc | |
| dc.rights | ©2005 American Physical Society | |
| dc.source.uri | https://doi.org/10.1103/physrevd.72.114507 | |
| dc.title | 1⁻⁺ exotic meson at light quark masses | |
| dc.title.alternative | 1(-+) exotic meson at light quark masses | |
| dc.type | Journal article | |
| pubs.publication-status | Published |
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