New precise measurements of the and decay asymmetries

6533b836fe1ef96bd12a1ba8

RESEARCH PRODUCT

New precise measurements of the and decay asymmetries

S. Stoynev E. Monnier E. Monnier R. Sacco R. Sacco U. Moosbrugger Nadia Pastrone M. Valdata M. Calvetti B. Vallage N. A. Molokanova K. Eppard M. C. Petrucci Roberta Arcidiacono Roberta Arcidiacono D. T. Madigozhin G. Ruggiero Marco Clemencic R. Fantechi P. F. Dalpiaz A. Maier F. Costantini E. Mazzucato A. Winhart T. Fonseca Martin T. Fonseca Martin Mauro Piccini E. Imbergamo C. Cerri P. Lubrano A. Michetti A. Nappi H. Dibon Anne Dabrowski Anne Dabrowski Lau Gatignon M. Pepe M. Ziolkowski M. Markytan B. Panzer-steindel B. Panzer-steindel G. Neuhofer C. Morales Morales M. Lenti Leander Litov G. Lamanna E. Menichetti D.c. Cundy D.c. Cundy M. De Beer A. Ceccucci A. Ceccucci Andrea Bizzeti Cristina Biino P. Cenci P.l. Frabetti P.l. Frabetti S. Goy Lopez F. Marchetto Jacqueline Batley Jacqueline Batley Manfred Jeitler L. Widhalm Mayda Velasco E. Iacopini H. D. Wahl H. D. Wahl P. Grafström M. Holder F. Petrucci P. Rubin P. Rubin M. Scarpa M. Behler U. Koch G. Pierazzini Alan W. Walker W. Wislicki B. Peyaud G. Bocquet G. Bocquet Yu. Potrebenikov G. Anzivino A. Gonidec A. I. Zinchenko M. Sozzi G. Gouge A. Hirstius A. Hirstius S. A. Wotton C. Cheshkov S. Giudici J.b. Cheze M. Savrie C. Lazzeroni C. Lazzeroni C. Lazzeroni M. Slater M. Slater A. Gianoli Niels Doble Niels Doble D.j. Munday D.j. Munday Evgueni Goudzovski Evgueni Goudzovski I. Mannelli L. Fiorini L. Fiorini L. Masetti V. Falaleev V. Falaleev M. Veltri A. Norton A. Norton Roland Winston Roland Winston Nicolo Cartiglia P. Marouelli W. Baldini Konrad Kleinknecht P. Debu G. Collazuol G. Marel Maulik R. Patel Maulik R. Patel M. Martini M. Eppard W. Kubischta Rainer Wanke E. C. Swallow E. C. Swallow G. Kalmus G. Kalmus A. Peters A. Peters Ivan Mikulec Peter Zahariev Hristov Peter Zahariev Hristov Vladimir Kekelidze

subject

Physics Nuclear and High Energy Physics Particle physics 010308 nuclear & particles physics Hadron Hyperon Gamma ray Elementary particle Fermion 01 natural sciences Nuclear physics Baryon Particle decay 0103 physical sciences 010306 general physics Radioactive decay

description

Abstract The decay asymmetries of the weak radiative hyperon decays Ξ 0 → Λ γ and Ξ 0 → Σ 0 γ have been measured with high precision using data of the NA48/1 experiment at CERN. From about 52 000 Ξ 0 → Λ γ and 15 000 Ξ 0 → Σ 0 γ decays, we obtain for the decay asymmetries α Ξ 0 → Λ γ = − 0.704 ± 0.019 stat ± 0.064 syst and α Ξ 0 → Σ 0 γ = − 0.729 ± 0.030 stat ± 0.076 syst , respectively. These results are in good agreement with previous experiments, but more precise.

year	journal	country	edition	language
2010-10-01	Physics Letters B

https://doi.org/10.1016/j.physletb.2010.08.046