Measurement of the Dalitz plot slope parameters of the K±→π±π+π− decay

6533b870fe1ef96bd12ceff7

RESEARCH PRODUCT

Measurement of the Dalitz plot slope parameters of the K±→π±π+π− decay

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

subject

Physics Nuclear physics Nuclear and High Energy Physics Dalitz plot Particle Data Group Atomic physics Order of magnitude

description

Abstract The distribution of the K ± → π ± π + π − decays in the Dalitz plot has been measured by the NA48/2 experiment at the CERN SPS with a sample of 4.71 × 10 8 fully reconstructed events. With the standard Particle Data Group parameterization the following values of the slope parameters were obtained: g = ( − 21.134 ± 0.017 ) % , h = ( 1.848 ± 0.040 ) % , k = ( − 0.463 ± 0.014 ) % . The quality and statistical accuracy of the data have allowed an improvement in precision by more than an order of magnitude, and are such as to warrant a more elaborate theoretical treatment, including pion–pion rescattering, which is in preparation.

year	journal	country	edition	language
2007-06-01	Physics Letters B

https://doi.org/10.1016/j.physletb.2007.04.044