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1826209068800278528
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MIT
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© 2020 American Physical Society. We report measurements of the photon beam asymmetry ς for the reaction γ - p→K+ς0(1193) using the GlueX spectrometer in Hall D at Jefferson Lab. Data were collected by using a linearly polarized photon beam in the energy range of 8.2-8.8 GeV incident on a liquid hydrogen target. The beam asymmetry ς was measured as a function of the Mandelstam variable t, and a single value of ς was extracted for events produced in the u channel. These are the first exclusive measurements of the photon beam asymmetry ς for the reaction in this energy range. For the t channel, the measured beam asymmetry is close to unity over the t range studied, -t=(0.1-1.4)(GeV/c)2, with an average value of ς=1.00±0.05. This agrees with theoretical models that describe the reaction via the natural-parity exchange of the K∗(892) Regge trajectory. A value of ς=0.41±0.09 is obtained for the u channel integrated up to -u=2.0 (GeV/c)2.
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2024-09-23T14:17:03Z
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Article
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mit-1721.1/133670
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Massachusetts Institute of Technology
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English
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2024-09-23T14:17:03Z
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2021
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American Physical Society (APS)
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dspace
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| spelling |
mit-1721.1/1336702022-04-01T17:20:49Z Measurement of the photon beam asymmetry in γ ⃗ p → K + Σ 0 at E γ = 8.5 GeV © 2020 American Physical Society. We report measurements of the photon beam asymmetry ς for the reaction γ - p→K+ς0(1193) using the GlueX spectrometer in Hall D at Jefferson Lab. Data were collected by using a linearly polarized photon beam in the energy range of 8.2-8.8 GeV incident on a liquid hydrogen target. The beam asymmetry ς was measured as a function of the Mandelstam variable t, and a single value of ς was extracted for events produced in the u channel. These are the first exclusive measurements of the photon beam asymmetry ς for the reaction in this energy range. For the t channel, the measured beam asymmetry is close to unity over the t range studied, -t=(0.1-1.4)(GeV/c)2, with an average value of ς=1.00±0.05. This agrees with theoretical models that describe the reaction via the natural-parity exchange of the K∗(892) Regge trajectory. A value of ς=0.41±0.09 is obtained for the u channel integrated up to -u=2.0 (GeV/c)2. 2021-10-27T19:54:05Z 2021-10-27T19:54:05Z 2020 2021-03-22T18:54:57Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/133670 en 10.1103/PHYSREVC.101.065206 Physical Review C Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society (APS) APS
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| spellingShingle |
Measurement of the photon beam asymmetry in γ ⃗ p → K + Σ 0 at E γ = 8.5 GeV
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| title |
Measurement of the photon beam asymmetry in γ ⃗ p → K + Σ 0 at E γ = 8.5 GeV
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| title_full |
Measurement of the photon beam asymmetry in γ ⃗ p → K + Σ 0 at E γ = 8.5 GeV
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| title_fullStr |
Measurement of the photon beam asymmetry in γ ⃗ p → K + Σ 0 at E γ = 8.5 GeV
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| title_full_unstemmed |
Measurement of the photon beam asymmetry in γ ⃗ p → K + Σ 0 at E γ = 8.5 GeV
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| title_short |
Measurement of the photon beam asymmetry in γ ⃗ p → K + Σ 0 at E γ = 8.5 GeV
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| title_sort |
measurement of the photon beam asymmetry in γ ⃗ p k σ 0 at e γ 8 5 gev
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| url |
https://hdl.handle.net/1721.1/133670
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