Cross section for γn→π0n measured at the Mainz A2 experiment

Briscoe, W. J.; Hadžimehmedović, M.; Kudryavtsev, A. E.; Kulikov, V. V.; Martemianov, M. A.; Strakovsky, I. I.; Švarc, A.; Tarasov, V. E.; Workman, R. L.; Abt, S.; Achenbach, P.; Akondi, C. S.; Afzal, F.; Aguar-Bartolomé, P.; Ahmed, Z.; Annand, J. R.  M.; Arends, H. J.; Bantawa, K.; Bashkanov, M.; Beck, R.; Biroth, M.; Borisov, N.; Braghieri, A.; Bulychjov, S. A.; Cividini, F.; Collicott, C.; Costanza, S.; Denig, A.; Downie, E. J.; Drexler, P.; Fegan, S.; Ferretti Bondy, M. I.; Gardner, S.; Ghosal, D.; Glazier, D. I.; Gorodnov, I.; Gradl, W.; Günther, M.; Gurevich, D.; Heijkenskjöld, L.; Hornidge, D.; Huber, G. M.; Käser, A.; Kashevarov, V. L.; Kay, S.; Korolija, M.; Krusche, B.; Lazarev, A.; Livingston, K.; Lutterer, S.; MacGregor, I. J.  D.; Macrae, R.; Manley, D. M.; Martel, P. P.; McGeorge, J. C.; Middleton, D. G.; Miskimen, R.; Mornacchi, E.; Mushkarenkov, A.; Mullen, C.; Neganov, A.; Neiser, A.; Ostrick, M.; Otte, P. B.; Osmanović, H.; Omerović, R.; Oussena, B.; Paudyal, D.; Pedroni, P.; Powell, A.; Prakhov, S. N.; Ron, G.; Rostomyan, T.; Sarty, A.; Sfienti, C.; Sokhoyan, V.; Spieker, K.; Stahov, J.; Steffen, O.; Supek, I.; Thiel, A.; Thiel, M.; Thomas, A.; Tiator, L.; Unverzagt, M.; Usov, Yu. A.; Walford, N. K.; Watts, D. P.; Wagner, S.; Werthmüller, D.; Wettig, J.; Wolfes, M.; Zachariou, N.

doi:10.1103/PhysRevC.100.065205

Title: Cross section for $γ n \to π^{0} n$ measured at the Mainz A2 experiment

Journal Article · 10 December 2019 · Physical Review. C

DOI: https://doi.org/10.1103/PhysRevC.100.065205 · OSTI ID:1578073

Briscoe, W. J. ^[1]; Hadžimehmedović, M.; Kudryavtsev, A. E.; Kulikov, V. V.; Martemianov, M. A.;

; Švarc, A.; Tarasov, V. E.; Workman, R. L.; Abt, S.; Achenbach, P.; Akondi, C. S.; Afzal, F.; Aguar-Bartolomé, P.; Ahmed, Z.; Annand, J. R. M.; Arends, H. J.; Bantawa, K.; Bashkanov, M.; Beck, R. more »

Kent State University

The γn → π⁰n differential cross section evaluated for 27 energy bins span the photon-energy range 290–813 MeV (W = 1.195 – 1.553 GeV) and the pion c.m. polar production angles, ranging from 18° to 162°, making use of model-dependent nuclear corrections to extract π⁰ production data on the neutron from measurements on the deuteron target. Additionally, the total photoabsorption cross section was measured. The tagged photon beam produced by the 883-MeV electron beam of the Mainz Microtron MAMI was used for the π⁰-meson production. Our accumulation of 3.6×10⁶ γn → π⁰n events enabled a detailed study of the reaction dynamics. Our data are in reasonable agreement with previous A2 measurements and extend them to lower energies. The data are compared to predictions of previous SAID, MAID, and BnGa partial-wave analyses and to the latest SAID fit MA19 that included our data. Selected photon decay amplitudes N* → γn at the resonance poles are observed for the first time.

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Research Organization:: George Washington Univ., Washington, DC (United States); Kent State Univ., Kent, OH (United States); University of Massachusetts, Amherst, MA (United States)

Sponsoring Organization:: Deutsche Forschungsgemeinschaft (DFG); National Science Foundation (NSF); Russian Foundation for Basic Research (RFBR); Schweizerischer Nationalfonds; UK Science and Technology Facilities Council (STFC); USDOE Office of Science (SC); USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)

Contributing Organization:: A2 Collaboration at MAMI

Grant/Contract Number:: FG02-01ER41194; FG02-88ER40415; SC0014323; SC0016582; SC0016583

OSTI ID:: 1578073

Journal Information:: Physical Review. C, Journal Name: Physical Review. C Journal Issue: 6 Vol. 100; ISSN PRVCAN; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cross Section for $\gamma n \to \pi^0 n$ measured at Mainz/A2 Collaboration, A2 https://doi.org/10.17182/hepdata.116236 The current record is supplemented by this collection	collection	January 2022
"Table 1" of "Cross Section for $\gamma n \to \pi^0 n$ measured at Mainz/A2" Collaboration, A2 https://doi.org/10.17182/hepdata.116236.v1/t1 The current record is supplemented by this dataset	dataset	January 2022
"Table 10" of "Cross section for $\gamma n \to \pi^0 n$ at the Mainz A2 experiment" Collaboration, A2 https://doi.org/10.17182/hepdata.116236.v1/t10 The current record is supplemented by this dataset	dataset	January 2022
"Table 11" of "Cross Section for $\gamma n \to \pi^0 n$ measured at Mainz/A2" Collaboration, A2 https://doi.org/10.17182/hepdata.116236.v1/t11 The current record is supplemented by this dataset	dataset	January 2022
"Table 12" of "Cross section for $\gamma n \to \pi^0 n$ at the Mainz A2 experiment" Collaboration, A2 https://doi.org/10.17182/hepdata.116236.v1/t12 The current record is supplemented by this dataset	dataset	January 2022
"Table 13" of "Cross Section for $\gamma n \to \pi^0 n$ measured at Mainz/A2" Collaboration, A2 https://doi.org/10.17182/hepdata.116236.v1/t13 The current record is supplemented by this dataset	dataset	January 2022
"Table 14" of "Cross section for $\gamma n \to \pi^0 n$ at the Mainz A2 experiment" Collaboration, A2 https://doi.org/10.17182/hepdata.116236.v1/t14 The current record is supplemented by this dataset	dataset	January 2022
"Table 15" of "Cross section for $\gamma n \to \pi^0 n$ at the Mainz A2 experiment" Collaboration, A2 https://doi.org/10.17182/hepdata.116236.v1/t15 The current record is supplemented by this dataset	dataset	January 2022
"Table 16" of "Cross section for $\gamma n \to \pi^0 n$ at the Mainz A2 experiment" Collaboration, A2 https://doi.org/10.17182/hepdata.116236.v1/t16 The current record is supplemented by this dataset	dataset	January 2022
"Table 17" of "Cross section for $\gamma n \to \pi^0 n$ at the Mainz A2 experiment" Collaboration, A2 https://doi.org/10.17182/hepdata.116236.v1/t17 The current record is supplemented by this dataset	dataset	January 2022
"Table 18" of "Cross section for $\gamma n \to \pi^0 n$ at the Mainz A2 experiment" Collaboration, A2 https://doi.org/10.17182/hepdata.116236.v1/t18 The current record is supplemented by this dataset	dataset	January 2022
"Table 19" of "Cross Section for $\gamma n \to \pi^0 n$ measured at Mainz/A2" Collaboration, A2 https://doi.org/10.17182/hepdata.116236.v1/t19 The current record is supplemented by this dataset	dataset	January 2022
"Table 2" of "Cross section for $\gamma n \to \pi^0 n$ at the Mainz A2 experiment" Collaboration, A2 https://doi.org/10.17182/hepdata.116236.v1/t2 The current record is supplemented by this dataset	dataset	January 2022
"Table 20" of "Cross section for $\gamma n \to \pi^0 n$ at the Mainz A2 experiment" Collaboration, A2 https://doi.org/10.17182/hepdata.116236.v1/t20 The current record is supplemented by this dataset	dataset	January 2022
"Table 21" of "Cross section for $\gamma n \to \pi^0 n$ at the Mainz A2 experiment" Collaboration, A2 https://doi.org/10.17182/hepdata.116236.v1/t21 The current record is supplemented by this dataset	dataset	January 2022
"Table 3" of "Cross section for $\gamma n \to \pi^0 n$ at the Mainz A2 experiment" Collaboration, A2 https://doi.org/10.17182/hepdata.116236.v1/t3 The current record is supplemented by this dataset	dataset	January 2022
"Table 4" of "Cross section for $\gamma n \to \pi^0 n$ at the Mainz A2 experiment" Collaboration, A2 https://doi.org/10.17182/hepdata.116236.v1/t4 The current record is supplemented by this dataset	dataset	January 2022
"Table 5" of "Cross section for $\gamma n \to \pi^0 n$ at the Mainz A2 experiment" Collaboration, A2 https://doi.org/10.17182/hepdata.116236.v1/t5 The current record is supplemented by this dataset	dataset	January 2022
"Table 6" of "Cross section for $\gamma n \to \pi^0 n$ at the Mainz A2 experiment" Collaboration, A2 https://doi.org/10.17182/hepdata.116236.v1/t6 The current record is supplemented by this dataset	dataset	January 2022
"Table 7" of "Cross section for $\gamma n \to \pi^0 n$ at the Mainz A2 experiment" Collaboration, A2 https://doi.org/10.17182/hepdata.116236.v1/t7 The current record is supplemented by this dataset	dataset	January 2022
"Table 8" of "Cross section for $\gamma n \to \pi^0 n$ at the Mainz A2 experiment" Collaboration, A2 https://doi.org/10.17182/hepdata.116236.v1/t8 The current record is supplemented by this dataset	dataset	January 2022
"Table 9" of "Cross section for $\gamma n \to \pi^0 n$ at the Mainz A2 experiment" Collaboration, A2 https://doi.org/10.17182/hepdata.116236.v1/t9 The current record is supplemented by this dataset	dataset	January 2022

Title: Cross section for γn→π0n measured at the Mainz A2 experiment

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Title: Cross section for $γ n \to π^{0} n$ measured at the Mainz A2 experiment