Search for CP violation in K0→3π0 decays

6533b7dafe1ef96bd126dfb8

RESEARCH PRODUCT

Search for CP violation in K0→3π0 decays

Konrad Kleinknecht M. Holder G. Graziani W. Wislicki A. Gonidec M. Wittgen E. Rondio Andrea Bizzeti J. C. Chollet G. Collazuol J. Nassalski P. F. Dalpiaz V. Falaleev D. Madigojine P. Lopes Da Silva Nadia Pastrone R. Fantechi I. Pellmann Benedetto Gorini G. Bocquet Yu. Potrebenikov T.j. Gershon S. Giudici T. Cuhadar-dönszelmann Milene Calvetti Augusto Ceccucci Vladimir Kekelidze Manfred Jeitler F. Martelli A. Lai Andrea Formica R.s. Dosanjh F. Derue M. Martini G.d. Barr B. Vallage G. Neuhofer M. Markytan J. Duclos G. Anzivino H. D. Wahl Lydia Iconomidou-fayard M. Lenti N. A. Molokanova K. Eppard P. Marouelli C. Cerri D.c. Cundy G. Gouge R. Turlay H. Dibon G. Marel B. Peyaud F. Costantini Rainer Wanke U. Koch A. Peters Y. Schué M. Pepe P. Debu A. Winhart C. Cheshkov Fabrizio Petrucci Mauro Piccini G.m. Pierazzini T.o. White G. Unal S. A. Wotton P. Lubrano W. Kubischta B. Panzer-steindel P. Rubin S.a. Schmidt S. Wronka Alexi Mestvirishvili P.l. Frabetti Nicolo Cartiglia Michael Ziolkowski E. Imbergamo J.b. Cheze Michael Andrew Parker Luca Fiorini Louis Fayard F. Marchetto D. Marras L. Widhalm E. Iacopini Alan W. Walker V. Schönharting Cristina Biino Ivan Mikulec I. Wingerter-seez P. Grafström M. Sozzi G. Tatishvili A. Nappi M. Eppard J. R. Batley Massimiliano Fiorini M. Cirilli Niels Doble Michal Szleper R. Sacco A. Lacourt M. Savrie E. Menichetti G.e. Kalmus M. De Beer Roberta Arcidiacono R. Casali M. Veltri Lau Gatignon A. Norton P. Cenci M. Contalbrigo A. Maier P. Hristov L. Köpke D.j. Munday Victoria Jane Martin E. Olaiya Cristina Lazzeroni E. Mazzucato A. I. Zinchenko M. Pernicka A. Gianoli R. Granier De Cassagnac A. Hirstius Anton Taurok I. Mestvirishvili I. Mannelli

subject

Nuclear physics Physics Nuclear and High Energy Physics Particle physics Amplitude 010308 nuclear & particles physics Branching fraction 0103 physical sciences Pi CP violation 010306 general physics Lifetime distribution 01 natural sciences

description

Abstract Using data taken during the year 2000 with the NA48 detector at the CERN SPS, a search for the CP violating decay K S → 3 π 0 has been performed. From a fit to the lifetime distribution of about 4.9 million reconstructed K 0 / K ¯ 0 → 3 π 0 decays, the CP violating amplitude η 000 = A ( K S → 3 π 0 ) / A ( K L → 3 π 0 ) has been found to be Re ( η 000 ) = − 0.002 ± 0.011 ± 0.015 and Im ( η 000 ) = − 0.003 ± 0.013 ± 0.017 . This corresponds to an upper limit on the branching fraction of Br ( K S → 3 π 0 ) 7.4 × 10 −7 at 90% confidence level. The result is used to improve knowledge of Re ( e ) and the CPT violating quantity Im ( δ ) via the Bell–Steinberger relation.

year	journal	country	edition	language
2005-03-01	Physics Letters B

https://doi.org/10.1016/j.physletb.2005.01.065