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New measurements of the $\eta$ and $K^0$ masses

A. Lai D. Marras J R. Batley A. Bevan R S. Dosanjh T J. Gershon B. Hay G E. Kalmus C. Lazzeroni D J. Munday M D. Needham E. Olaiya M A. Parker T O. White S A. Wotton G. Barr G. Bocquet A. Ceccucci T. Cuhadar-Donszelmann D. Cundy G. d'Agostini N. Doble V P. Falaleev W. Funk L. Gatignon A. Gonidec B. Gorini G. Govi P. Grafstrom W. Kubischta A. Lacourt M. Lenti S. Luitz J P. Matheys I. Mikulec A. Norton S. Palestini B. Panzer-Steindel D. Schinzel G. Tatishvili H. Taureg M. Velasco O. Vossnack H. Wahl C. Cheshkov A. Gaponenko P Z. Khristov V. Kekelidze D. Madigojine N. Molokanova Yu. Potrebenikov A. Tkachev A. Zinchenko I. Knowles V. Martin H. Parsons R. Sacco A. Walker M. Contalbrigo P. Dalpiaz J. Duclos P L. Frabetti A. Gianoli M. Martini F. Petrucci M. Savrie M. Scarpa A. Bizzeti M. Calvetti G. Collazuol G. Graziani E. Iacopini F. Martelli M. Veltri H G. Becker H. Bluemer D. Coward M. Eppard H. Fox A. Hirstius K. Holtz A. Kalter K. Kleinknecht U. Koch L. Kopke P. Lopes da Silva P. Marouelli I. Pellmann A. Peters S A. Schmidt V. Schonharting Y. Schue R. Wanke A. Winhart M. Wittgen J C. Chollet 1 S. Crepe 1 L. Fayard 1 L. Iconomidou-Fayard 1 J. Ocariz 1 G. Unal 1 I. Wingerter-Seez 1 G. Anzivino P. Cenci E. Imbergamo P. Lubrano A. Mestvirishvili A. Nappi M. Pepe M. Piccini L. Bertanza A. Bigi P. Calafiura R. Carosi R. Casali C. Cerri M. Cirilli F. Costantini R. Fantechi S. Giudici I. Mannelli G. Pierazzini M. Sozzi J B. Cheze J. Cogan M. de Beer P. Debu F. Derue A. Formica R. Granier de Cassagnac E. Mazzucato B. Peyaud R. Turlay B. Vallage I. Augustin M. Bender M. Holder A. Maier M. Ziolkowski R. Arcidiacono C. Biino N. Cartiglia R. Guida F. Marchetto E. Menichetti N. Pastrone J P. Nassalski E. Rondio M. Szleper W. Wislicki S. Wronka H. Dibon G. Fischer M. Jeitler M. Markytan G. Neuhofer M. Pernicka A. Taurok L. Widhalm
Abstract : New measurements of the $\eta$ and $K^0$ masses have been performed using decays to 3$\pi^0$ with the NA48 detector at the CERN SPS. Using symmetric decays to reduce systematic effects, the results $M(\eta) = 547.843\pm0.051$~MeV/c$^2$ and $M(K^0) = 497.625\pm0.031$~MeV/c$^2$ were obtained.
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Submitted on : Tuesday, June 25, 2002 - 2:33:10 PM
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A. Lai, D. Marras, J R. Batley, A. Bevan, R S. Dosanjh, et al.. New measurements of the $\eta$ and $K^0$ masses. Physics Letters B, Elsevier, 2002, 533, pp.196-206. ⟨in2p3-00011550⟩

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