Measurement of the decay rate and form factor parameter alpha(K*) in the decay K-L -> e(+)e(-)gamma

Fanti, V; Lai, A; Musa, L; Marras, D; Nappi, A; Hay, B; Moore, Rw; Moore, Kn; Munday, Dj; Needham, Md; Parker, Ma; White, To; Wotton, Sa; Barr, G; Bocquet, G; Bremer, J; Ceccucci, A; Cundy, D; Doble, N; Funk, W; Gatignon, L; Gianoli, A; Gonidec, A; Govi, G; Grafstrom, P; Kubischta, W; Lacourt, A; Luitz, S; Kesseler, G; Matheys, Jp; Norton, A; Palestini, S; Panzer-steindel, B; Schinzel, D; Taureg, H; Velasco, M; Vossnack, O; Wahl, H; Wirrer, G; Kekelidze, V; Mestvirishvili, A; Tatishvili, G; Potrebenikov, I; Tkatchev, A; Zinchenko, A; Boyle, O; Martin, Vj; Knowles, Ig; Parsons, Hlc; Dalpaiz, P; Duclos, J; Frabetti, Pl; Martini, M; Petrucci, F; Porcu, M; Savrie, M; Bizzeti, A; Calvetti, M; Collazuol, G; Graziani, G; Iacopini, E; Lenti, M; Michetti, A; Becker, Hg; Blumer, H; Buchholz, P; Coward, D; Ebersberger, C; Fox, H; Kalter, A; Kleinknecht, K; Koch, U; Kopke, L; Renk, B; Scheidt, J; Schmidt, J; Schonharting, V; Schue, Y; Wilhelm, R; Winhart, A; Wittgen, M; Chollet, Jc; Crepe, S; Iconomidou-fayard, L; Fayard, L; Ocariz, J; Unal, G; Vattolo, D; Wingerter, I; Anzivino, G; Cenci, P; Lubrano, P; Pepe, M; Gorini, B; Calafiura, P; Carosi, R; Cerri, C; Cirilli, M; Costantini, F; Fantechi, R; Giudici, S; Mannelli, I; Pierazzini, G; Sozzi, M; Cheze, Jb; Cogan, J; Nullm, nullDe Beer; Debu, P; Formica, A; De Cassagnac Rg,; Hristov, P; Mazzucato, E; Peyaud, B; Schanne, S; Turlay, R; Vallage, B; Augustin, I; Bender, M; Holder, M; Ziolkowski, M; Arcidiacono, R; Biino, C; Marchetto, F; Menichetti, E; Nassalski, J; Rondio, E; Szleper, M; Wislicki, W; Wronka, S; Dibon, H; Fischer, G; Jeitler, M; Markytan, M; Mikulec, I; Neuhofer, G; Pernicka, M; Taurok, A.

doi:10.1016/S0370-2693(99)00561-4

The decay rate of the neutral K meson K-L --> e(+)e(-)gamma has been measured with the NA48 detector at the CERN SPS. A total of 6864 events has been observed with an estimated background of 10 events. The branching ratio is Gamma(K-L --> e(+)e(-)gamma)/Gamma(K-L --> all) = (1.06 +/- 0.02(stat) +/- 0.02(sys) +/- 0.04(calc)) X 10(-5). The parameter alpha(K*) describing the relative strength of the two contributing amplitudes to this decay through intermediate pseudoscalar or vector mesons was measured to be alpha(K*) = -0.36 +/- 0.06(stat) +/- 0.02(sys). (C) 1999 Published by Elsevier Science B.V. All rights reserved.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11568/191344

Autori:	COSTANTINI, FLAVIO GIUDICI, SERGIO SOZZI, MARCO STANISLAO
Autori:	Fanti V; Lai A; Musa L; Marras D; Nappi A; Hay B; Moore RW; Moore KN; Munday DJ; Needham MD; Parker MA; White TO; Wotton SA; Barr G; Bocquet G; Bremer J; Ceccucci A; Cundy D; Doble N; Funk W; Gatignon L; Gianoli A; Gonidec A; Govi G; Grafstrom P; Kubischta W; Lacourt A; Luitz S; Kesseler G; Matheys JP; Norton A; Palestini S; Panzer-Steindel B; Schinzel D; Taureg H; Velasco M; Vossnack O; Wahl H; Wirrer G; Kekelidze V; Mestvirishvili A; Tatishvili G; Potrebenikov I; Tkatchev A; Zinchenko A; Boyle O; Martin VJ; Knowles IG; Parsons HLC; Dalpaiz P; Duclos J; Frabetti PL; Martini M; Petrucci F; Porcu M; Savrie M; Bizzeti A; Calvetti M; Collazuol G; Graziani G; Iacopini E; Lenti M; Michetti A; Becker HG; Blumer H; Buchholz P; Coward D; Ebersberger C; Fox H; Kalter A; Kleinknecht K; Koch U; Kopke L; Renk B; Scheidt J; Schmidt J; Schonharting V; Schue Y; Wilhelm R; Winhart A; Wittgen M; Chollet JC; Crepe S; Iconomidou-Fayard L; Fayard L; Ocariz J; Unal G; Vattolo D; Wingerter I; Anzivino G; Cenci P; Lubrano P; Pepe M; Gorini B; Calafiura P; Carosi R; Cerri C; Cirilli M; Costantini F; Fantechi R; Giudici S; Mannelli I; Pierazzini G; Sozzi M; Cheze JB; Cogan J; De Beer M; Debu P; Formica A; de Cassagnac RG; Hristov P; Mazzucato E; Peyaud B; Schanne S; Turlay R; Vallage B; Augustin I; Bender M; Holder M; Ziolkowski M; Arcidiacono R; Biino C; Marchetto F; Menichetti E; Nassalski J; Rondio E; Szleper M; Wislicki W; Wronka S; Dibon H; Fischer G; Jeitler M; Markytan M; Mikulec I; Neuhofer G; Pernicka M; Taurok A
Titolo:	Measurement of the decay rate and form factor parameter alpha(K*) in the decay K-L -> e(+)e(-)gamma
Anno del prodotto:	1999
Digital Object Identifier (DOI):	10.1016/S0370-2693(99)00561-4
Appare nelle tipologie:	1.1 Articolo in rivista

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