Search for direct CP-violation in K±→π±π0π0 decays

6533b855fe1ef96bd12b1ad9

RESEARCH PRODUCT

Search for direct CP-violation in K±→π±π0π0 decays

C. Cerri S Goy-lopez D. Coward Fabrizio Petrucci R. Fantechi P. Marouelli Milene Calvetti Leander Litov M. Veltri P Z Khristov H. Dibon Wander Baldini G. Marel Marco Clemencic G. Neuhofer Maulik R. Patel P. Rubin S. Stoynev Enrico Celeghini N. Doble Mauro Raggi H Wahle Alan W. Walker A. Dabrowski Lau Gatignon M. C. Petrucci D. Cundy B. Renk A. Gianoli N. A. Molokanova D.j. Munday K. Eppard Andrea Bizzeti Luigi Di Lella J Richard Batley G. Bocquet Yu. Potrebenikov U. Moosbrugger J. Derr P. Cenci B. Peyaud M. De Beer A. Peters M. Sozzi R. Winston Nicolo Cartiglia I. Mannelli S. Wotton E. Iacopini Massimiliano Fiorini Vladimir Kekelidze G.m. Pierazzini M.w. Slater B. Vallage M. Ziolkowski Manfred Jeitler A. Zinchenko P. L. Frabetti C. Damiani P. F. Dalpiaz M. Szleper Konrad Kleinknecht M. Behler Mayda Velasco M. Markytan M. Lenti M. Valdata-nappi Kozhuharov A. Michetti J.b. Cheze Cristina Biino Giuseppina Anzivino I. Polenkevich T Fonseca-martin Ivan Mikulec M. D. Wood Rainer Wanke A. Nappi S. Balev F. Marchetto M. Holder M. Martini A. Maier A. Norton M. Shieh S. Giudici A.j. Culling M. Scarpa Luca Fiorini E. C. Swallow L. Widhalm E. Imbergamo E. Marinova Falaleev M. Wache Nicola Cabibbo C. Cheshkov D. T. Madigozhin L. Masetti G. Lamanna E. Mazzucato Mauro Piccini F. Martelli M. Savrie Augusto Ceccucci C. Morales-morales B. Bloch-devaux Simone Bifani A. Gonidec Giuseppe Ruggiero G.e. Kalmus Cristina Lazzeroni Roberta Arcidiacono F. Costantini W. Kubischta G. Collazuol M. Fidecaro E. Monnier M. Pepe Evgueni Goudzovski A Cotta-ramusino A. Winhart

subject

Physics Nuclear and High Energy Physics Particle physics Large Hadron Collider media_common.quotation_subject Pi CP violation Dalitz plot Charge (physics)Good control Asymmetry Order of magnitude media_common

description

Abstract A search for direct CP-violation in K ± → π ± π 0 π 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 A g = ( g + − g − ) / ( g + + g − ) is measured to be A g = ( 1.8 ± 2.6 ) × 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.

year	journal	country	edition	language
2006-06-01	Physics Letters B

https://doi.org/10.1016/j.physletb.2006.05.008