Measurement of the Ξ0→Λγ decay asymmetry and branching fraction

6533b7d4fe1ef96bd12634b1

RESEARCH PRODUCT

Measurement of the Ξ0→Λγ decay asymmetry and branching fraction

G. Tatishvili Lau Gatignon D. Marras A. Tkatchev M. Sozzi Benedetto Gorini P. Cenci M. Cirilli Niels Doble G. Govi M. De Beer Manfred Jeitler M. Holder A. Kalter Roberta Arcidiacono R. Casali W. Kubischta M. Contalbrigo E. Olaiya J. Duclos A. Winhart P. Debu A. Maier G. Anzivino P. Hristov Mauro Piccini L. Köpke P. F. Dalpiaz I. Wingerter-seez T.o. White G. Unal S. A. Wotton Rainer Wanke Nadia Pastrone C. Cheshkov E. Mazzucato T.j. Gershon Adrian John Bevan A. Gaponenko G.d. Barr H. Fox R. Turlay B. Vallage M. Markytan M. Lenti M. Pepe G. D'agostini Nicolo Cartiglia A. I. Zinchenko A. Lacourt Michael Andrew Parker F. Martelli E. Rondio J. C. Chollet M. Martini I.g. Knowles Alexi Mestvirishvili Augusto Ceccucci E. Iacopini J.b. Cheze A. Peters D. Madigojine S. Giudici A. Gianoli N. A. Molokanova T. Cuhadar-dönszelmann K. Eppard P. Grafström A. Nappi A. Gonidec R. Granier De Cassagnac Roberto Guida G.m. Pierazzini R.s. Dosanjh G. Collazuol Konrad Kleinknecht H.g. Becker Cristina Biino Ivan Mikulec S. Wronka V. Schönharting G. Graziani R. Fantechi M. Wittgen Michal Szleper B. Hay J. Cogan V. Falaleev I. Pellmann Milene Calvetti M. Savrie H. Dibon P. Lubrano B. Panzer-steindel S.a. Schmidt E. Menichetti G. Neuhofer Sandro Palestini G.e. Kalmus Louis Fayard R. Carosi F. Marchetto D.c. Cundy Vladimir Kekelidze L. Widhalm A. Lai Andrea Formica Y. Schué E. Imbergamo F. Costantini Victoria Jane Martin M. Eppard R. Sacco G. Bocquet Yu. Potrebenikov U. Koch Mayda Velasco M. Veltri A. Norton G. Fischer Anton Taurok D.j. Munday J. Nassalski P. Lopes Da Silva Lydia Iconomidou-fayard P. Marouelli L. Bertanza M. Pernicka Wojciech Wislicki J. Ocariz B. Renk Cristina Lazzeroni H. D. Wahl B. Peyaud I. Mannelli Michael Ziolkowski H. Taureg Andrea Bizzeti C. Cerri Fabrizio Petrucci P.l. Frabetti Alan W. Walker

subject

Physics Particle physics Nuclear and High Energy Physics Large Hadron Collider Branching fraction media_common.quotation_subject iperoni Xi0 Hyperon Radiative decay NA48 experiment Asymmetry Nuclear physics decadimenti radiativi Radiative transfer iperoni Xi0; decadimenti radiativi media_common

description

In data taken with the NA48 experiment at the CERN SPS in 1999, 730 candidates of the weak radiative hyperon decay Ξ0→Λγ have been found with an estimated background of 58±8 events. From these events the Ξ0→Λγ decay asymmetry has been determined to α(Ξ0→Λγ)=-0.78±0.18stat±0.06 syst, which is the first evidence of a decay asymmetry in Ξ 0→Λγ. The branching fraction of the decay has been measured to be Br(Ξ0→Λγ)=(1.16±0.05 stat±0.06syst)×10-3. © 2004 Elsevier B.V. All rights reserved.

year	journal	country	edition	language
2004-04-01	Physics Letters B

10.1016/j.physletb.2004.01.041 http://dx.doi.org/10.1016/j.physletb.2004.01.041