Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/257
Type: Artigo de periódico
Title: Dispersive analysis of KL mu 3 and KLe3 scalar and vector form factors using KTeV data
Author: ABOUZAID, E.
ARENTON, M.
BARKER, A. R.
BELLANTONI, L.
BLUCHER, E.
BOCK, G. J.
CHEU, E.
COLEMAN, R.
CORCORAN, M. D.
COX, B.
ERWIN, A. R.
ESCOBAR, C. O.
GLAZOV, 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
RAMBERG, E. J.
RAY, R. E.
RONQUEST, M.
SANTOS, E.
SLATER, W.
SMITH, D.
SOLOMEY, N.
SWALLOW, E. C.
TOALE, P. A.
TSCHIRHART, R.
WAH, Y. W.
WANG, J.
WHITE, H. B.
WHITMORE, J.
WILKING, M. J.
WINSTON, R.
WORCESTER, E. T.
YAMANAKA, T.
ZIMMERMAN, E. D.
ZUKANOVICH, R. F.
BERNARD, Veronique
OERTEL, Micaela
PASSEMAR, Emilie
STERN, Jan
Abstract: Using the published KTeV samples of K(L) -> pi(+/-)e(-/+)nu and K(L) -> pi(+/-)mu(-/+)nu decays, we perform a reanalysis of the scalar and vector form factors based on the dispersive parametrization. We obtain phase-space integrals I(K)(e) = 0.15446 +/- 0.00025 and I(K)(mu) = 0.10219 +/- 0.00025. For the scalar form factor parametrization, the only free parameter is the normalized form factor value at the Callan-Treiman point (C); our best-fit results in InC = 0.1915 +/- 0.0122. We also study the sensitivity of C to different parametrizations of the vector form factor. The results for the phase-space integrals and C are then used to make tests of the standard model. Finally, we compare our results with lattice QCD calculations of F(K)/F(pi) and f(+)(0).
Country: Estados Unidos
Editor: AMER PHYSICAL SOC
Citation: PHYSICAL REVIEW D, v.81, n.5, 2010
Rights: fechado
Identifier DOI: 10.1103/PhysRevD.81.052001
Address: http://dx.doi.org/10.1103/PhysRevD.81.052001
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Date Issue: 2010
Appears in Collections:IFGW - Artigos e Materiais de Revistas Científicas

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