TY - JOUR
T1 - Measurement of the beam-helicity asymmetry in photoproduction of π0η pairs on carbon, aluminum, and lead
AU - A2 Collaboration at MAMI
AU - Sokhoyan, V.
AU - Prakhov, S.
AU - Fix, A.
AU - Abt, S.
AU - Achenbach, P.
AU - Adlarson, P.
AU - Afzal, F.
AU - Aguar-Bartolomé, P.
AU - Ahmed, Z.
AU - Altangerel, K.
AU - Annand, J. R.M.
AU - Arends, H. J.
AU - Bantawa, K.
AU - Bashkanov, M.
AU - Beck, R.
AU - Biroth, M.
AU - Borisov, N. S.
AU - Braghieri, A.
AU - Briscoe, W. J.
AU - Cherepnya, S.
AU - Cividini, F.
AU - Collicott, C.
AU - Costanza, S.
AU - Denig, A.
AU - Dieterle, M.
AU - Downie, E. J.
AU - Drexler, P.
AU - Ferretti Bondy, M. I.
AU - Fil'kov, L. V.
AU - Gardner, S.
AU - Garni, S.
AU - Glazier, D. I.
AU - Gorodnov, I.
AU - Gradl, W.
AU - Günther, M.
AU - Gurevich, G. M.
AU - Heijkenskjöld, L.
AU - Hornidge, D.
AU - Huber, G. M.
AU - Käser, A.
AU - Kashevarov, V. L.
AU - Kay, S.
AU - Keshelashvili, I.
AU - Kondratiev, R.
AU - Korolija, M.
AU - Krusche, B.
AU - Lazarev, A.
AU - Livingston, K.
AU - Lutterer, S.
AU - Ron, G.
N1 - Publisher Copyright:
© 2020 The Author(s)
PY - 2020/3/10
Y1 - 2020/3/10
N2 - The beam-helicity asymmetry was measured, for the first time, in photoproduction of π0η pairs on carbon, aluminum, and lead, with the A2 experimental setup at MAMI. The results are compared to an earlier measurement on a free proton and to the corresponding theoretical calculations. The Mainz model is used to predict the beam-helicity asymmetry for the nuclear targets. The present results indicate that the photoproduction mechanism for π0η pairs on nuclei is similar to photoproduction on a free nucleon. This process is dominated by the D33 partial wave with the ηΔ(1232) intermediate state.
AB - The beam-helicity asymmetry was measured, for the first time, in photoproduction of π0η pairs on carbon, aluminum, and lead, with the A2 experimental setup at MAMI. The results are compared to an earlier measurement on a free proton and to the corresponding theoretical calculations. The Mainz model is used to predict the beam-helicity asymmetry for the nuclear targets. The present results indicate that the photoproduction mechanism for π0η pairs on nuclei is similar to photoproduction on a free nucleon. This process is dominated by the D33 partial wave with the ηΔ(1232) intermediate state.
UR - http://www.scopus.com/inward/record.url?scp=85078243753&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2020.135243
DO - 10.1016/j.physletb.2020.135243
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:85078243753
SN - 0370-2693
VL - 802
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
M1 - 135243
ER -