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Proton-η′ interactions at threshold.

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Title: Proton-η′ interactions at threshold.
Authors: Anisovich, A.V.1,2, Burkert, V.3, Dugger, M.4, Klempt, E.1,3 klempt@hiskp.uni-bonn.de, Nikonov, V.A.1,2, Ritchie, B.G.4, Sarantsev, A.V.1,2, Thoma, U.1
Source: Physics Letters B. Oct2018, Vol. 785, p626-630. 5p.
Subjects: Scattering (Physics), Wave analysis, Fluid dynamics, Wave mechanics, Wave analyzers
Abstract: Abstract Recent data on photoproduction of η ′ mesons off protons have been included in the data base for the Bonn–Gatchina partial wave analysis. The real and imaginary parts of the S -wave η ′ p → η ′ p scattering amplitude in the threshold region were fit to yield the η ′ p scattering length and the interaction range. This new analysis found | a η ′ p | = (0.403 ± 0.015 ± 0.060) fm and a phase ϕ = (87 ± 2) ∘ , while the range parameter is not well-constrained. The striking behavior of the GRAAL data on the beam asymmetry in the threshold region suggests that a narrow proton- η ′ resonance might exist. However, the scattering length was found to be relatively insensitive to the possible existence of this narrow resonance. [ABSTRACT FROM AUTHOR]
Copyright of Physics Letters B is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 132319746
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Proton-η′ interactions at threshold.
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  Data: <searchLink fieldCode="AR" term="%22Anisovich%2C+A%2EV%2E%22">Anisovich, A.V.</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Burkert%2C+V%2E%22">Burkert, V.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Dugger%2C+M%2E%22">Dugger, M.</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Klempt%2C+E%2E%22">Klempt, E.</searchLink><relatesTo>1,3</relatesTo><i> klempt@hiskp.uni-bonn.de</i><br /><searchLink fieldCode="AR" term="%22Nikonov%2C+V%2EA%2E%22">Nikonov, V.A.</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Ritchie%2C+B%2EG%2E%22">Ritchie, B.G.</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Sarantsev%2C+A%2EV%2E%22">Sarantsev, A.V.</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Thoma%2C+U%2E%22">Thoma, U.</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Physics+Letters+B%22">Physics Letters B</searchLink>. Oct2018, Vol. 785, p626-630. 5p.
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  Data: Abstract Recent data on photoproduction of η ′ mesons off protons have been included in the data base for the Bonn–Gatchina partial wave analysis. The real and imaginary parts of the S -wave η ′ p → η ′ p scattering amplitude in the threshold region were fit to yield the η ′ p scattering length and the interaction range. This new analysis found | a η ′ p | = (0.403 ± 0.015 ± 0.060) fm and a phase ϕ = (87 ± 2) ∘ , while the range parameter is not well-constrained. The striking behavior of the GRAAL data on the beam asymmetry in the threshold region suggests that a narrow proton- η ′ resonance might exist. However, the scattering length was found to be relatively insensitive to the possible existence of this narrow resonance. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Physics Letters B is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.physletb.2018.06.034
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              Text: Oct2018
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