Search for the Rare Decay K_{L}\toπ^{0}π^{0}γ

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dc.creatorKTeV Collaboration
dc.creatorAbouzaid, E.
dc.creatorArenton, M.
dc.creatorBarker, A. R.
dc.creatorBellantoni, L.
dc.creatorBlucher, E.
dc.creatorBock, G. J.
dc.creatorCheu, E.
dc.creatorColeman, R.
dc.creatorCorcoran, M. D.
dc.creatorCorti, G.
dc.creatorCox, B.
dc.creatorErwin, A. R.
dc.creatorEscobar, C. O.
dc.creatorGlazov, A.
dc.creatorGolossanov, A.
dc.creatorGomes, R. A.
dc.creatorGouffon, P.
dc.creatorHsiung, Y. B.
dc.creatorJensen, D. A.
dc.creatorKessler, R.
dc.creatorKotera, K.
dc.creatorLedovskoy, A.
dc.creatorMcBride, P. L.
dc.creatorMonnier, E.
dc.creatorNguyen, H.
dc.creatorNiclasen, R.
dc.creatorPhillips II, D. G.
dc.creatorPing, H.
dc.creatorRamberg, E. J.
dc.creatorRay, R. E.
dc.creatorRonquest, M.
dc.creatorSantos, E.
dc.creatorShields, J.
dc.creatorSlater, W.
dc.creatorSmith, D.
dc.creatorSolomey, N.
dc.creatorSwallow, E. C.
dc.creatorToale, P. A.
dc.creatorTschirhart, R.
dc.creatorVelissaris, C.
dc.creatorWah, Y. W.
dc.creatorWang, J.
dc.creatorWhite, H. B.
dc.creatorWhitmore, J.
dc.creatorWilking, M.
dc.creatorWinston, R.
dc.creatorWorcester, E. T.
dc.creatorWorcester, M.
dc.creatorYamanaka, T.
dc.creatorZimmerman, E. D.
dc.creatorZukanovich, R. F.
dc.date2007-08-21
dc.date2008-10-07
dc.date.accessioned2026-07-07T10:07:34Z
dc.date.available2026-07-07T10:07:34Z
dc.descriptionThe KTeV E799 experiment has conducted a search for the rare decay $K_{L}\toπ^{0}π^{0}γ$ via the topology $K_{L}\toπ^{0}π^{0}_Dγ$ (where $π^0_D\toγe^+e^-$). Due to Bose statistics of the $π^0$ pair and the real nature of the photon, the $K_{L}\toπ^{0}π^{0}γ$ decay is restricted to proceed at lowest order by the CP conserving direct emission (DE) of an E2 electric quadrupole photon. The rate of this decay is interesting theoretically since chiral perturbation theory predicts that this process vanishes at level $O(p^4)$. Therefore, this mode probes chiral perturbation theory at $O(p^6)$. In this paper we report a determination of an upper limit of $2.43\times 10^{-7}$ (90% CL) for $K_{L}\toπ^{0}π^{0}γ$. This is approximately a factor of 20 lower than previous results.
dc.descriptionsix pages and six figures in the submission. Reformatted for Physics Review D
dc.identifierhttps://arxiv.org/abs/0708.2874
dc.identifierhttp://arxiv.org/abs/0708.2874
dc.identifierPhys.Rev.D78:032014,2008
dc.identifierdoi:10.1103/PhysRevD.78.032014
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/170683
dc.subjectHigh Energy Physics - Experiment
dc.titleSearch for the Rare Decay K_{L}\toπ^{0}π^{0}γ
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