Evidence of the Θ^+ in the γd \to K^+K^-pn reaction

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dc.creatorNakano, T.
dc.creatorMuramatsu, N.
dc.creatorAhn, D. S.
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.creatorFukui, S.
dc.creatorHasegawa, H.
dc.creatorHicks, K.
dc.creatorHorie, K.
dc.creatorHotta, T.
dc.creatorImai, K.
dc.creatorIshikawa, T.
dc.creatorIwata, T.
dc.creatorKato, Y.
dc.creatorKawai, H.
dc.creatorKim, Z. Y.
dc.creatorKino, K.
dc.creatorKohri, H.
dc.creatorKumagai, N.
dc.creatorMakino, S.
dc.creatorMatsuda, T.
dc.creatorMatsuoka, N.
dc.creatorMatsumura, T.
dc.creatorMibe, T.
dc.creatorMiyabe, M.
dc.creatorMiyachi, Y.
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.creatorShagin, P. M.
dc.creatorShiino, Y.
dc.creatorShimizu, A.
dc.creatorShimizu, H.
dc.creatorSugaya, Y.
dc.creatorSumihama, M.
dc.creatorToi, Y.
dc.creatorToyokawa, H.
dc.creatorWakai, A.
dc.creatorWang, C. W.
dc.creatorWang, S. C.
dc.creatorYonehara, K.
dc.creatorYorita, T.
dc.creatorYoshimura, M.
dc.creatorYosoi, M.
dc.creatorZegers, R. G. T.
dc.date2008-12-04
dc.date.accessioned2026-07-07T12:51:26Z
dc.date.available2026-07-07T12:51:26Z
dc.descriptionThe γd \to K^+K^-pn reaction has been studied to search for the evidence of the Θ^+ by detecting K^+K^- pairs at forward angles. The Fermi-motion corrected nK^+ invariant mass distribution shows a narrow peak at 1.524 +- 0.002 + 0.003 GeV/c^2. The statistical significance of the peak calculated from a shape analysis is 5.1 σ, and the differential cross-section for the γn \to K^- Θ^+ reaction is estimated to be 12 +- 2 nb/sr in the photon energy range from 2.0 GeV to 2.4 GeV in the LEPS angular range by assuming the isotropic production of the Θ^+ in the γn center-of-mass system. The obtained results support the existence of the Θ^+.
dc.description31 pages, 16 figures, and 1 table. Submitted to Phys. Rev. C
dc.identifierhttps://arxiv.org/abs/0812.1035
dc.identifierhttp://arxiv.org/abs/0812.1035
dc.identifierPhys.Rev.C79:025210,2009
dc.identifierdoi:10.1103/PhysRevC.79.025210
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/222987
dc.subjectNuclear Experiment
dc.titleEvidence of the Θ^+ in the γd \to K^+K^-pn reaction
dc.typetext

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