Pseudoscalar and scalar meson photoproduction interpreted by Regge phenomenology

Igor I. Strakovsky; William J. Briscoe; Olga Cortes Becerra; Michael Dugger; Gary Goldstein; Victor L. Kashevarov; Axel Schmidt; Peter Solazzo; Byung Geel Yu

doi:10.1103/PhysRevC.107.015203

Pseudoscalar and scalar meson photoproduction interpreted by Regge phenomenology

Igor I. Strakovsky, William J. Briscoe, Olga Cortes Becerra, Michael Dugger, Gary Goldstein, Victor L. Kashevarov, Axel Schmidt, Peter Solazzo, Byung Geel Yu

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

We have evaluated pseudoscalar and scalar neutral pion photoproduction in γ - p→π0p and a00p above the resonance region and within Regge phenomenology. Our fit, including GlueX ς pseudoscalar photoproduction data, shows that previous Stanford Linear Accelerator Center (SLAC) ς measurements for γ - p→π0p above Eγ=4GeV vary substantially from SLAC data with more recent measurements made by GlueX in the vicinity of Eγ=9GeV. The Regge model predicts that the beam polarization asymmetry ς of the scalar meson is opposite to that of pseudoscalar meson photoproduction; however, the cross sections are similar. While the natural parity vector meson exchange is dominant in both cases, the contribution of the unnatural parity pseudovector meson exchange is very small. Using Regge phenomenology, we predicted high-energy behavior for double polarized observables E, F, G, and H for the reactions γp→π0p and a00p.

Original language	English (US)
Article number	015203
Journal	Physical Review C
Volume	107
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.107.015203
State	Published - Jan 2023

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevC.107.015203

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@article{381ae886082f4f52a29ba4f7f767b31c,

title = "Pseudoscalar and scalar meson photoproduction interpreted by Regge phenomenology",

abstract = "We have evaluated pseudoscalar and scalar neutral pion photoproduction in γ - p→π0p and a00p above the resonance region and within Regge phenomenology. Our fit, including GlueX ς pseudoscalar photoproduction data, shows that previous Stanford Linear Accelerator Center (SLAC) ς measurements for γ - p→π0p above Eγ=4GeV vary substantially from SLAC data with more recent measurements made by GlueX in the vicinity of Eγ=9GeV. The Regge model predicts that the beam polarization asymmetry ς of the scalar meson is opposite to that of pseudoscalar meson photoproduction; however, the cross sections are similar. While the natural parity vector meson exchange is dominant in both cases, the contribution of the unnatural parity pseudovector meson exchange is very small. Using Regge phenomenology, we predicted high-energy behavior for double polarized observables E, F, G, and H for the reactions γp→π0p and a00p.",

author = "Strakovsky, {Igor I.} and Briscoe, {William J.} and {Cortes Becerra}, Olga and Michael Dugger and Gary Goldstein and Kashevarov, {Victor L.} and Axel Schmidt and Peter Solazzo and Yu, {Byung Geel}",

note = "Publisher Copyright: {\textcopyright} 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.",

year = "2023",

month = jan,

doi = "10.1103/PhysRevC.107.015203",

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T1 - Pseudoscalar and scalar meson photoproduction interpreted by Regge phenomenology

AU - Strakovsky, Igor I.

AU - Briscoe, William J.

AU - Cortes Becerra, Olga

AU - Dugger, Michael

AU - Goldstein, Gary

AU - Kashevarov, Victor L.

AU - Schmidt, Axel

AU - Solazzo, Peter

AU - Yu, Byung Geel

N1 - Publisher Copyright: © 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

PY - 2023/1

Y1 - 2023/1

N2 - We have evaluated pseudoscalar and scalar neutral pion photoproduction in γ - p→π0p and a00p above the resonance region and within Regge phenomenology. Our fit, including GlueX ς pseudoscalar photoproduction data, shows that previous Stanford Linear Accelerator Center (SLAC) ς measurements for γ - p→π0p above Eγ=4GeV vary substantially from SLAC data with more recent measurements made by GlueX in the vicinity of Eγ=9GeV. The Regge model predicts that the beam polarization asymmetry ς of the scalar meson is opposite to that of pseudoscalar meson photoproduction; however, the cross sections are similar. While the natural parity vector meson exchange is dominant in both cases, the contribution of the unnatural parity pseudovector meson exchange is very small. Using Regge phenomenology, we predicted high-energy behavior for double polarized observables E, F, G, and H for the reactions γp→π0p and a00p.

AB - We have evaluated pseudoscalar and scalar neutral pion photoproduction in γ - p→π0p and a00p above the resonance region and within Regge phenomenology. Our fit, including GlueX ς pseudoscalar photoproduction data, shows that previous Stanford Linear Accelerator Center (SLAC) ς measurements for γ - p→π0p above Eγ=4GeV vary substantially from SLAC data with more recent measurements made by GlueX in the vicinity of Eγ=9GeV. The Regge model predicts that the beam polarization asymmetry ς of the scalar meson is opposite to that of pseudoscalar meson photoproduction; however, the cross sections are similar. While the natural parity vector meson exchange is dominant in both cases, the contribution of the unnatural parity pseudovector meson exchange is very small. Using Regge phenomenology, we predicted high-energy behavior for double polarized observables E, F, G, and H for the reactions γp→π0p and a00p.

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Pseudoscalar and scalar meson photoproduction interpreted by Regge phenomenology

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