Measurement of the polarization of the Ξ0 (Ξ0¯) hyperon beam by the NA48/1 experiment

6533b836fe1ef96bd12a1253

RESEARCH PRODUCT

Measurement of the polarization of the Ξ0 (Ξ0¯) hyperon beam by the NA48/1 experiment

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

subject

Physics Nuclear and High Energy Physics Meson Proton 010308 nuclear & particles physics Hadron Hyperon 7. Clean energy 01 natural sciences Xi baryon Nuclear physics Baryon Pion 0103 physical sciences 010306 general physics Nucleon

description

Abstract A total of 368 415 Ξ 0 → Λ π 0 and 31 171 Ξ 0 ¯ → Λ ¯ π 0 were selected from data recorded in the NA48/1 experiment during 2002 data taking. From this sample, the polarization of Ξ 0 and Ξ 0 ¯ hyperons was measured to be P Ξ 0 = − 0.102 ± 0.012 (stat) ± 0.008 (syst) and P Ξ 0 ¯ = − 0.01 ± 0.04 (stat) ± 0.008 (syst) . The dependence of P Ξ 0 on the Ξ 0 transverse momentum with respect to the primary proton beam is also presented. With the same data sample, the ratio of Ξ 0 ¯ and Ξ 0 fluxes in proton collisions at 400 GeV / c on a beryllium target was measured.

year	journal	country	edition	language
2009-11-01	Physics Letters B

https://doi.org/10.1016/j.physletb.2009.10.054