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, 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; Celeghini, E; 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; Dilelia, 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.

doi:10.1016/j.physletb.2011.01.042

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 lepton number violating decay. (C) 2011 Elsevier B.V. All rights reserved.

Autori:	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 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 Celeghini E 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 DiLelia 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. mostra contributor esterni nascondi contributor esterni
Autori:	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 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; Celeghini E; 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; DiLelia L; Lamanna G; Mannelli I; Michetti A; Costantini F; Doble N; Fiorini L; Giudici S; Pierazzini G; Sozzi M; 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
Titolo:	New measurement of the K(+/-) -> pi(+/-)mu(+)mu(-) decay
Anno del prodotto:	2011
Digital Object Identifier (DOI):	10.1016/j.physletb.2011.01.042
Appare nelle tipologie:	1.1 Articolo in rivista

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