Search for direct CP-violation in K-+/-->pi(+/-)pi(0)pi(0) decays
- Batley JR
- Culling AJ
- 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
- Calvetti M
- Celeghini E
- Iacopini E
- Lenti M
- Martelli F
- Ruggiero G
- Veltri M
- 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
- Anzivino G
- Cenci P
- Imbergamo E
- Nappi A
- Pepe M
- Petrucci MC
- Piccini M
- Raggi M
- Valdata-Nappi M
- Cerri C
- Collazuol G
- Costantini F
- DiLella L
- Doble N
- Fantechi R
- Fiorini L
- Giudici S
- Lamanna G
- Mannelli I
- Michetti A
- Pierazzini G
- Sozzi M
- Bloch-Devaux B
- Cheshkov C
- Cheze JB
- De Beer M
- Derre J
- Marel G
- Mazzucato E
- Peyaud B
- Vallage B
- Holder A
- Ziolkowski M
- Bafani S
- Biino C
- Cartiglia N
- Clemencic M
- Lopez SG
- Marchetto F
- Dibon H
- Jeitler M
- Markytan M
- Mikulec I
- Neuhofer G
- Widhalm L
DOIAbstract
A search for direct CP-violation in K-+/- -> pi(+/-)pi(0)pi(0) decay based on 47.14 million events has been performed by the NA48/2 experiment at the CERN SPS. The asymmetry in the Dalitz plot linear slopes Ag = (g(+)-g(-))/(g(+)+g(-)) is measured to be A(g) = (1.8 +/- 2.6) x 10(-4). The design of the experiment and the method of analysis provide good control of instrumental charge asymmetries in this measurement. The precision of the result is limited by statistics and is almost one order of magnitude better than that of previous measurements by other experiments. (c) 2006 Elsevier B.V. All rights reserved
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