New measurement of the K-+/- -> pi(+)pi(-)e(+/-)v (Ke4) decay branching ratio and hadronic form factors
- Batley, Jr
- Kalmus, G
- Lazzeroni, C
- Munday, Dj
- Slater, Mw
- Wotton, Sa
- Arcidiacono, R
- Bocquet, G
- Cabibbo, N
- Ceccucci, A
- Cundy, D
- Falaleev, V
- Fidecaro, M
- Gatignon, L
- Gonidec, A
- Kubischta, W
- Norton, A
- Maier, A
- Patel, M
- Peters, A
- Balev, S
- Frabetti, Pl
- Gersabeck, E
- Goudzovski, E
- Hristov, P
- Kekelidze, V
- Kozhuharov, V
- Litov, L
- Madigozhin, D
- Molokanova, N
- Polenkevich, I
- Potrebenikov, Y
- Stoynev, S
- Zinchenko, A
- Monnier, E
- Swallow, E
- Winston, R
- Rubin, P
- Walker, A
- Baldini, W
- Ramusino, Ac
- Dalpiaz, P
- Damiani, C
- Fiorini, M
- Gianoli, A
- Martini, M
- Petrucci, F
- Savrie, M
- Scarpa, M
- Wahl, H
- Bizzeti, A
- Lenti, M
- Veltri, M
- Calvetti, M
- Iacopini, E
- Ruggiero, G
- Behler, M
- Eppard, K
- Kleinknecht, K
- Marouelli, P
- Masetti, L
- Moosbrugger, U
- Morales, Cm
- Renk, B
- Wache, M
- Wanke, R
- Winhart, A
- Coward, D
- Dabrowski, A
- Martin, Tf
- Shieh, M
- Szleper, M
- Velasco, M
- Wood, Md
- Cenci, P
- Pepe, M
- Petrucci, Mc
- Anzivino, G
- Imbergamo, E
- Nappi, A
- Piccini, M
- Raggi, M
- Valdata Nappi, M
- Cerri, C
- Fantechi, R
- Collazuol, G
- Dilella, L
- Lamanna, Gianluca
- Mannelli, I
- Michetti, A
- Costantini, Flavio
- Doble, N
- Fiorini, L
- Giudici, Sergio
- Pierazzini, G
- Sozzi, MARCO STANISLAO
- Venditti, S
- Bloch Devaux, B
- Cheshkov, C
- Cheze, Jb
- De Beer, M
- Derre, J
- Marel, G
- Mazzucato, E
- Peyaud, B
- Vallage, B
- Holder, M
- Ziolkowski, M
- Biino, C
- Cartiglia, N
- Marchetto, F
- Bifani, S
- Clemencic, M
- Lopez, Sg
- Dibon, H
- Jeitler, M
- Markytan, M
- Mikulec, I
- Neuhofer, G
- Widhalm, L.
DOIAbstract
A sample of more than one million K-+/- -> pi(+)pi(-)e(+/-)v (K-e4) decay candidates with less than one percent background contamination has been collected by the NA48/2 experiment at the CERN SPS in 2003-2004, allowing a detailed study of the decay properties. The branching ratio, inclusive of K-e4 gamma decays, is measured to be BR(K-e4) = (4.257 +/- 0.016(exp) +/- 0.031(ext)) x 10(-5) with a total relative error of 0.8%. This measurement complements the study of S- and P-wave hadronic form factors by assigning absolute values to the relative hadronic form factors obtained earlier in a simultaneous analysis of the pi pi scattering lengths conducted on the same data sample. The overall form factor normalization f(s) = 5.705 +/- 0.017(exp) ...
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