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

A2 Collaboration at MAMI

doi:10.1103/PhysRevC.100.065205

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

A2 Collaboration at MAMI

Racah Institute of Physics

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

25 Scopus citations

Abstract

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 allowed 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 with 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 determined for the first time.

Original language	English
Article number	065205
Journal	Physical Review C
Volume	100
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.100.065205
State	Published - 11 Dec 2019

Bibliographical note

Publisher Copyright:
© 2019 American Physical Society.

Access to Document

10.1103/PhysRevC.100.065205

Cite this

@article{e5f145ed756144f9af879d55401d25ab,

title = "Cross section for γn→π0n measured at the Mainz A2 experiment",

abstract = "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 allowed 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 with 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 determined for the first time.",

author = "{A2 Collaboration at MAMI} and Briscoe, {W. J.} and M. Had{\v Z}imehmedovi{\'c} and Kudryavtsev, {A. E.} and Kulikov, {V. V.} and Martemianov, {M. A.} and Strakovsky, {I. I.} and A. {\v S}varc and Tarasov, {V. E.} and Workman, {R. L.} and S. Abt and P. Achenbach and Akondi, {C. S.} and F. Afzal and P. Aguar-Bartolom{\'e} and Z. Ahmed and Annand, {J. R.M.} and Arends, {H. J.} and K. Bantawa and M. Bashkanov and R. Beck and M. Biroth and N. Borisov and A. Braghieri and Bulychjov, {S. A.} and F. Cividini and C. Collicott and S. Costanza and A. Denig and Downie, {E. J.} and P. Drexler and S. Fegan and {Ferretti Bondy}, {M. I.} and S. Gardner and D. Ghosal and Glazier, {D. I.} and I. Gorodnov and W. Gradl and M. G{\"u}nther and D. Gurevich and L. Heijkenskj{\"o}ld and D. Hornidge and Huber, {G. M.} and A. K{\"a}ser and Kashevarov, {V. L.} and S. Kay and M. Korolija and B. Krusche and A. Lazarev and K. Livingston and G. Ron",

note = "Publisher Copyright: {\textcopyright} 2019 American Physical Society.",

year = "2019",

month = dec,

day = "11",

doi = "10.1103/PhysRevC.100.065205",

language = "אנגלית",

volume = "100",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "6",

}

TY - JOUR

T1 - Cross section for γn→π0n measured at the Mainz A2 experiment

AU - A2 Collaboration at MAMI

AU - Briscoe, W. J.

AU - HadŽimehmedović, M.

AU - Kudryavtsev, A. E.

AU - Kulikov, V. V.

AU - Martemianov, M. A.

AU - Strakovsky, I. I.

AU - Švarc, A.

AU - Tarasov, V. E.

AU - Workman, R. L.

AU - Abt, S.

AU - Achenbach, P.

AU - Akondi, C. S.

AU - Afzal, F.

AU - Aguar-Bartolomé, P.

AU - Ahmed, Z.

AU - Annand, J. R.M.

AU - Arends, H. J.

AU - Bantawa, K.

AU - Bashkanov, M.

AU - Beck, R.

AU - Biroth, M.

AU - Borisov, N.

AU - Braghieri, A.

AU - Bulychjov, S. A.

AU - Cividini, F.

AU - Collicott, C.

AU - Costanza, S.

AU - Denig, A.

AU - Downie, E. J.

AU - Drexler, P.

AU - Fegan, S.

AU - Ferretti Bondy, M. I.

AU - Gardner, S.

AU - Ghosal, D.

AU - Glazier, D. I.

AU - Gorodnov, I.

AU - Gradl, W.

AU - Günther, M.

AU - Gurevich, D.

AU - Heijkenskjöld, L.

AU - Hornidge, D.

AU - Huber, G. M.

AU - Käser, A.

AU - Kashevarov, V. L.

AU - Kay, S.

AU - Korolija, M.

AU - Krusche, B.

AU - Lazarev, A.

AU - Livingston, K.

AU - Ron, G.

PY - 2019/12/11

Y1 - 2019/12/11

N2 - 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 allowed 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 with 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 determined for the first time.

AB - 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 allowed 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 with 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 determined for the first time.

UR - http://www.scopus.com/inward/record.url?scp=85076547697&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.100.065205

DO - 10.1103/PhysRevC.100.065205

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:85076547697

SN - 2469-9985

VL - 100

JO - Physical Review C

JF - Physical Review C

IS - 6

M1 - 065205

ER -

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

Abstract

Bibliographical note

Access to Document

Other files and links

Fingerprint

Cite this