Backward-angle photoproduction of $π^0$ mesons on the proton at $E_γ$ = 1.5--2.4 GeV

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dc.creatorSumihama, M.
dc.creatorAhn, J. K.
dc.creatorAkimune, H.
dc.creatorAsano, Y.
dc.creatorChang, W. C.
dc.creatorDaté, S.
dc.creatorEjiri, H.
dc.creatorFujimura, H.
dc.creatorFujiwara, M.
dc.creatorHicks, K.
dc.creatorHotta, T.
dc.creatorImai, K.
dc.creatorIshikawa, T.
dc.creatorIwata, T.
dc.creatorKawai, H.
dc.creatorKim, Z. Y.
dc.creatorKino, K.
dc.creatorKohri, H.
dc.creatorKumagai, N.
dc.creatorMakino, S.
dc.creatorMatsumura, T.
dc.creatorMatsuoka, N.
dc.creatorMibe, T.
dc.creatorMiyabe, M.
dc.creatorMiyachi, Y.
dc.creatorMorita, M.
dc.creatorMuramatsu, N.
dc.creatorNakano, T.
dc.creatorNiiyama, M.
dc.creatorNomachi, M.
dc.creatorOhashi, Y.
dc.creatorOhkuma, H.
dc.creatorOoba, T.
dc.creatorOshuev, D. S.
dc.creatorRangacharyulu, C.
dc.creatorSakaguchi, A.
dc.creatorSato, T.
dc.creatorShagin, P. M.
dc.creatorShiino, Y.
dc.creatorShimizu, H.
dc.creatorSugaya, Y.
dc.creatorToyokawa, H.
dc.creatorWakai, A.
dc.creatorWang, C. W.
dc.creatorWang, S. C.
dc.creatorYonehara, K.
dc.creatorYorita, T.
dc.creatorYosoi, M.
dc.creatorZegers, R. G. T.
dc.date2007-08-12
dc.date.accessioned2026-07-07T10:57:07Z
dc.date.available2026-07-07T10:57:07Z
dc.descriptionDifferential cross sections and photon beam asymmetries for $π^0$ photoproduction have been measured at $E_γ$ = 1.5--2.4 GeV and at the $π^0$ scattering angles, --1 $<$ cos$Θ_{c.m.} <$ --0.6. The energy-dependent slope of differential cross sections for $u$-channel $π^0$ production has been determined. An enhancement at backward angles is found above $E_γ$ = 2.0 GeV. This is inferred to be due to the $u$-channel contribution and/or resonances. Photon beam asymmetries have been obtained for the first time at backward angles. A strong angular dependence has been found at $E_γ>$ 2.0 GeV, which may be due to the unknown high-mass resonances.
dc.description12 pages, 4 figures, submitted to PLB
dc.identifierhttps://arxiv.org/abs/0708.1600
dc.identifierhttp://arxiv.org/abs/0708.1600
dc.identifierPhys.Lett.B657:32-37,2007
dc.identifierdoi:10.1016/j.physletb.2007.10.032
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/186641
dc.subjectNuclear Experiment
dc.titleBackward-angle photoproduction of $π^0$ mesons on the proton at $E_γ$ = 1.5--2.4 GeV
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