Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/268
Type: Artigo de periódico
Title: Search for the rare decay K(L)->pi(0)pi(0)gamma
Author: ABOUZAID, E.
ARENTON, M.
BARKER, A. R.
BELLANTONI, L.
BLUCHER, E.
BOCK, G. J.
CHEU, E.
COLEMAN, R.
CORCORAN, M. D.
CORTI, G.
COX, B.
ERWIN, A. R.
ESCOBAR, C. O.
GLAZOV, A.
GOLOSSANOV, A.
GOMES, R. A.
GOUFFON, P.
HSIUNG, Y. B.
JENSEN, D. A.
KESSLER, R.
KOTERA, K.
LEDOVSKOY, A.
MCBRIDE, P. L.
MONNIER, E.
NGUYEN, H.
NICLASEN, R.
II, D. G. Phillips
PING, H.
RAMBERG, E. J.
RAY, R. E.
RONQUEST, M.
SANTOS, E.
SHIELDS, J.
SLATER, W.
SMITH, D.
SOLOMEY, N.
SWALLOW, E. C.
TOALE, P. A.
TSCHIRHART, R.
VELISSARIS, C.
WAH, Y. W.
WANG, J.
WHITE, H. B.
WHITMORE, J.
WILKING, M.
WINSTON, R.
WORCESTER, E. T.
WORCESTER, M.
YAMANAKA, T.
ZIMMERMAN, E. D.
ZUKANOVICH, R. F.
Abstract: The KTeV E799 experiment has conducted a search for the rare decay K(L)->pi(0)pi(0)gamma via the topology K(L)->pi(0)pi(0)(D)gamma (where pi(0)(D)->gamma e(+)e(-)). Because of Bose statistics of the pi(0) pair and the real nature of the photon, the K(L)->pi(0)pi(0)gamma 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 2.43x10(-7) (90% CL) for K(L)->pi(0)pi(0)gamma. This is approximately a factor of 20 lower than previous results.
Country: Estados Unidos
Editor: AMER PHYSICAL SOC
Citation: PHYSICAL REVIEW D, v.78, n.3, 2008
Rights: fechado
Identifier DOI: 10.1103/PhysRevD.78.032014
Address: http://apps.isiknowledge.com/InboundService.do?Func=Frame&product=WOS&action=retrieve&SrcApp=EndNote&UT=000258975300018&Init=Yes&SrcAuth=ResearchSoft&mode=FullRecord
http://dx.doi.org/10.1103/PhysRevD.78.032014
Date Issue: 2008
Appears in Collections:IFGW - Artigos e Materiais de Revistas Científicas

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