New measurement of the K-+/- -> pi(+/-)mu(+)mu(-) decay
- 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
- Goudzovski, E
- Hristov, P
- Kekelidze, V
- Kozhuharov, V
- Litov, L
- Madigozhin, D
- Marinova, E
- Molokanova, N
- Polenkevich, I
- Potrebenikov, Y
- Stoynev, S
- Zinchenko, A
- Monnier, E
- Swallow, E
- Winston, R
- Rubin, P
- Walker, A
- Baldini, Wander
- Ramusino, Ac
- Dalpiaz, Pietro
- Damiani, Chiara
- Fiorini, Massimiliano
- Gianoli, Alberto
- Martini, Marco
- Petrucci, Fabrizio
- Savrie, M
- Scarpa, Marcella
- Wahl, Heinrich
- Bizzeti, Andrea
- Lenti, Massimo
- Veltri, Michele
- Calvetti, Mario
- Celeghini, Enrico
- Iacopini, Enrico
- Ruggiero, Giuseppe
- 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, Patrizia
- Pepe, Monica
- Petrucci Maria, Carmela
- Anzivino, Giuseppina
- Imbergamo, Ermanno
- Nappi, Aniello
- Piccini, Mauro
- Raggi, Mauro
- Valdata Nappi, M
- Cerri, Claudio
- Fantechi, Riccardo
- Collazuol, Gianmaria
- Dilelia, L
- Lamanna, Gianluca
- Mannelli, Italo
- Michetti, Andrea
- Costantini, Flavio
- Doble, N
- Fiorini, Luca
- Giudici, Sergio
- Pierazzini, Giuseppe
- Sozzi, Marco
- Venditti, Stefano
- 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, Cristina
- Cartiglia, Nicolo'
- Marchetto Flavio, Pietro
- Bifani, Simone
- Clemencic, Marco
- Lopez, Sg
- Dibon, H
- Jeitler, M
- Markytan, M
- Mikulec, I
- Neuhofer, G
- Widhalm, L.
DOIAbstract
A sample of 3120 K-+/- -> pi(+/-)mu(+)mu(-) decay candidates with (3.3 +/- 0.7)% background contamination has been collected by the NA48/2 experiment at the CERN SPS, allowing a detailed study of the decay properties. The branching ratio was measured to be BR = (9.62 +/- 0.25) x 10(-8). The form factor W(z), where z = (M-mu mu/M-K)(2), was parameterized according to several models. In particular, the slope of the linear form factor W(z) = W-0(1 + delta z) was measured to be delta = 3.11 +/- 0.57. Upper limits of 2.9 x 10(-2) and 2.3 x 10(-2) on possible charge asymmetry and forward-backward asymmetry were established at 90% CL. An upper limit BR(K-+/- -> pi(-/+)mu(+/-)mu(+/-)) < 1.1 x 10(-9) was established at 90% CL for the rate of the lep...
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