Photon asymmetry measurements of $\overrightarrow{\gamma}p \rightarrow \pi^{0} p$ γ → p → π 0 p for $E_{\gamma}=$ 320-650 MeV

Gardner, S.; Howdle, D.; Sikora, M. H.; Wunderlich, Y.; Abt, S.; Achenbach, P.; Afzal, F.; Aguar-Bartolome, P.; Ahmed, Z.; Annand, J. R.  M.; Arends, H. J.; Bantawa, K.; Bashkanov, M.; Beck, R.; Biroth, M.; Borisov, N. S.; Braghieri, A.; Briscoe, W. J.; Cherepnya, S.; Cividini, F.; Costanza, S.; Collicott, C.; Demissie, B. T.; Denig, A.; Dieterle, M.; Downie, E. J.; Drexler, P.; Ferretti-Bondy, M. I.; Filkov, L. V.; Glazier, D. I.; Garni, S.; Gradl, W.; Günther, M.; Gurevich, G. M.; Hall Barrientos, P.; Hamilton, D.; Heid, E.; Hornidge, D.; Huber, G. M.; Jahn, O.; Jude, T. C.; Käser, A.; Kay, S.; Kashevarov, V. L.; Keshelashvili, I.; Kondratiev, R.; Korolija, M.; Krusche, B.; Linturi, J. M.; Lisin, V.; Livingston, K.; Lutterer, S.; MacGregor, I. J.  D.; Macrae, R.; Mancell, J.; Manley, D. M.; Martel, P. P.; McGeorge, J. C.; McNicoll, E. F.; Middleton, D. G.; Miskimen, R.; Mullen, C.; Mushkarenkov, A.; Neganov, A. B.; Neiser, A.; Nikolaev, A.; Oberle, M.; Ostrick, M.; Owens, R. O.; Otte, P. B.; Oussena, B.; Paudyal, D.; Pedroni, P.; Polonski, A.; Prakhov, S.; Rajabi, A.; Robinson, J.; Rosner, G.; Rostomyan, T.; Sarty, A.; Schumann, S.; Sokhoyan, V.; Spieker, K.; Steffen, O.; Sfienti, C.; Strakovsky, I. I.; Strandberg, B.; Strub, Th.; Supek, I.; Tarbert, C. M.; Thiel, A.; Thiel, M.; Thomas, A.; Unverzagt, M.; Usov, Yu. A.; Watts, D. P.; Werthmüller, D.; Wettig, J.; Wolfes, M.; Witthauer, L.; Zana, L.

doi:10.1140/epja/i2016-16333-5

Title: Photon asymmetry measurements of $$\overrightarrow{\gamma}p \rightarrow \pi^{0} p$$ γ → p → π 0 p for $$E_{\gamma}=$$ 320-650 MeV

Journal Article · Thu Nov 17 00:00:00 EST 2016 · European Physical Journal. A

DOI:https://doi.org/10.1140/epja/i2016-16333-5· OSTI ID:1425737

Gardner, S.; Howdle, D.; Sikora, M. H.; Wunderlich, Y.; Abt, S.; Achenbach, P.; Afzal, F.; Aguar-Bartolome, P.; Ahmed, Z.; Annand, J. R. M.; Arends, H. J.; Bantawa, K.; Bashkanov, M.; Beck, R.; Biroth, M.; Borisov, N. S.; Braghieri, A.; Briscoe, W. J.; Cherepnya, S.; Cividini, F. more »

High-statistics measurements of the photon asymmetry Σ for the $$\overrightarrow{\gamma}p \rightarrow \pi^{0} p$$ reaction have been made in the center-of-mass energy range W = 1214–1450 MeV. The data were measured with the MAMI A2 real photon beam and Crystal Ball/TAPS detector systems in Mainz, Germany. The resulting measurements significantly improve the existing world data and are shown to be in good agreement with previous measurements, and with the MAID, SAID, and Bonn-Gatchina predictions. We have also combined the photon asymmetry results with recent cross-section measurements from Mainz to calculate the profile functions, $$\check{Σ}$$ (= σ₀Σ), and perform a moment analysis. Comparison with calculations from the Bonn-Gatchina model shows that the precision of the data is good enough to further constrain the higher partial waves, and there is an indication of interference between the very small F-waves and the N(1520)3/2^- and N(1535)1/2^- resonances.

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Research Organization:: George Washington Univ., Washington, DC (United States)

Sponsoring Organization:: USDOE; Science and Technology Facilities Council (STFC) (United Kingdom); German Research Foundation (DFG); European Union (EU); Swiss National Science Foundation (SNSF); National Science Foundation (NSF); Natural Sciences and Engineering Research Council of Canada (NSERC)

Contributing Organization:: The A2 Collaboration at MAMI

Grant/Contract Number:: SC0014133; SAPPJ-2015-00023

OSTI ID:: 1425737

Journal Information:: European Physical Journal. A, Vol. 52, Issue 11; ISSN 1434-6001

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 10 works

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References (34)

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N* Photoexcitation Results from Mainz Sokhoyan, Vahe Few-Body Systems, Vol. 59, Issue 6 https://doi.org/10.1007/s00601-018-1440-5	journal	July 2018
Cross section for $γ n \to π^{0} n$ measured at the Mainz A2 experiment Briscoe, W. J.; Hadžimehmedović, M.; Kudryavtsev, A. E. Physical Review C, Vol. 100, Issue 6 https://doi.org/10.1103/physrevc.100.065205	journal	December 2019

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71 CLASSICAL AND QUANTUM MECHANICS
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"Sigma01" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t1 The current record is supplemented by this dataset	dataset	January 2022
"Sigma10" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t10 The current record is supplemented by this dataset	dataset	January 2022
"Sigma11" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t11 The current record is supplemented by this dataset	dataset	January 2022
"Sigma12" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t12 The current record is supplemented by this dataset	dataset	January 2022
"Sigma13" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t13 The current record is supplemented by this dataset	dataset	January 2022
"Sigma14" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t14 The current record is supplemented by this dataset	dataset	January 2022
"Sigma15" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t15 The current record is supplemented by this dataset	dataset	January 2022
"Sigma16" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t16 The current record is supplemented by this dataset	dataset	January 2022
"Sigma17" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t17 The current record is supplemented by this dataset	dataset	January 2022
"Sigma18" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t18 The current record is supplemented by this dataset	dataset	January 2022
"Sigma19" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t19 The current record is supplemented by this dataset	dataset	January 2022
"Sigma02" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t2 The current record is supplemented by this dataset	dataset	January 2022
"Sigma20" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t20 The current record is supplemented by this dataset	dataset	January 2022
"Sigma21" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t21 The current record is supplemented by this dataset	dataset	January 2022
"Sigma22" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t22 The current record is supplemented by this dataset	dataset	January 2022
"Sigma23" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t23 The current record is supplemented by this dataset	dataset	January 2022
"Sigma24" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t24 The current record is supplemented by this dataset	dataset	January 2022
"Sigma25" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t25 The current record is supplemented by this dataset	dataset	January 2022
"Sigma26" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t26 The current record is supplemented by this dataset	dataset	January 2022
"Sigma27" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t27 The current record is supplemented by this dataset	dataset	January 2022
"Sigma28" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t28 The current record is supplemented by this dataset	dataset	January 2022
"Sigma29" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t29 The current record is supplemented by this dataset	dataset	January 2022
"Sigma03" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t3 The current record is supplemented by this dataset	dataset	January 2022
"Sigma30" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t30 The current record is supplemented by this dataset	dataset	January 2022
"Sigma31" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t31 The current record is supplemented by this dataset	dataset	January 2022
"Sigma32" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t32 The current record is supplemented by this dataset	dataset	January 2022
"Sigma33" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t33 The current record is supplemented by this dataset	dataset	January 2022
"Sigma34" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t34 The current record is supplemented by this dataset	dataset	January 2022
"Sigma35" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t35 The current record is supplemented by this dataset	dataset	January 2022
"Sigma36" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t36 The current record is supplemented by this dataset	dataset	January 2022
"Sigma37" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t37 The current record is supplemented by this dataset	dataset	January 2022
"Sigma38" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t38 The current record is supplemented by this dataset	dataset	January 2022
"Sigma39" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t39 The current record is supplemented by this dataset	dataset	January 2022
"Sigma04" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t4 The current record is supplemented by this dataset	dataset	January 2022
"Sigma40" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t40 The current record is supplemented by this dataset	dataset	January 2022
"Sigma41" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t41 The current record is supplemented by this dataset	dataset	January 2022
"Sigma42" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t42 The current record is supplemented by this dataset	dataset	January 2022
"Sigma43" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t43 The current record is supplemented by this dataset	dataset	January 2022
"Sigma44" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t44 The current record is supplemented by this dataset	dataset	January 2022
"Sigma45" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t45 The current record is supplemented by this dataset	dataset	January 2022
"Sigma46" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t46 The current record is supplemented by this dataset	dataset	January 2022
"Sigma47" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t47 The current record is supplemented by this dataset	dataset	January 2022
"Sigma48" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t48 The current record is supplemented by this dataset	dataset	January 2022
"Sigma49" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t49 The current record is supplemented by this dataset	dataset	January 2022
"Sigma05" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t5 The current record is supplemented by this dataset	dataset	January 2022
"Sigma50" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t50 The current record is supplemented by this dataset	dataset	January 2022
"Sigma51" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t51 The current record is supplemented by this dataset	dataset	January 2022
"Sigma52" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t52 The current record is supplemented by this dataset	dataset	January 2022
"Sigma53" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t53 The current record is supplemented by this dataset	dataset	January 2022
"Sigma54" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t54 The current record is supplemented by this dataset	dataset	January 2022
"Sigma55" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t55 The current record is supplemented by this dataset	dataset	January 2022
"Sigma56" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t56 The current record is supplemented by this dataset	dataset	January 2022
"Sigma57" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t57 The current record is supplemented by this dataset	dataset	January 2022
"Sigma58" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t58 The current record is supplemented by this dataset	dataset	January 2022
"Sigma59" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t59 The current record is supplemented by this dataset	dataset	January 2022
"Sigma06" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t6 The current record is supplemented by this dataset	dataset	January 2022
"Sigma60" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t60 The current record is supplemented by this dataset	dataset	January 2022
"Sigma61" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t61 The current record is supplemented by this dataset	dataset	January 2022
"Sigma62" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t62 The current record is supplemented by this dataset	dataset	January 2022
"Sigma63" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t63 The current record is supplemented by this dataset	dataset	January 2022
"Sigma64" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t64 The current record is supplemented by this dataset	dataset	January 2022
"Sigma65" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t65 The current record is supplemented by this dataset	dataset	January 2022
"Sigma66" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t66 The current record is supplemented by this dataset	dataset	January 2022
"Sigma67" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t67 The current record is supplemented by this dataset	dataset	January 2022
"Sigma68" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t68 The current record is supplemented by this dataset	dataset	January 2022
"Sigma69" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t69 The current record is supplemented by this dataset	dataset	January 2022
"Sigma07" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t7 The current record is supplemented by this dataset	dataset	January 2022
"Sigma70" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t70 The current record is supplemented by this dataset	dataset	January 2022
"Sigma71" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t71 The current record is supplemented by this dataset	dataset	January 2022
"Sigma72" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t72 The current record is supplemented by this dataset	dataset	January 2022
"Sigma73" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t73 The current record is supplemented by this dataset	dataset	January 2022
"Sigma74" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t74 The current record is supplemented by this dataset	dataset	January 2022
"Sigma75" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t75 The current record is supplemented by this dataset	dataset	January 2022
"Sigma76" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t76 The current record is supplemented by this dataset	dataset	January 2022
"Sigma77" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t77 The current record is supplemented by this dataset	dataset	January 2022
"Sigma78" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t78 The current record is supplemented by this dataset	dataset	January 2022
"Sigma08" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t8 The current record is supplemented by this dataset	dataset	January 2022
"Sigma09" of "Photon asymmetry measurements of $\overrightarrow{\gamma} \mathrm{p} \rightarrow \pi^{0} \mathrm{p}$ for E$_{\gamma}$=320$-$650 MeV" Collaboration, Mainz-A2 https://doi.org/10.17182/hepdata.129289.v1/t9 The current record is supplemented by this dataset	dataset	January 2022