Precision measurement of the Ξ0 mass and the branching ratios of the decays Ξ0 → Λγ and Ξ0 → ∑0γ

V. Fanti*, A. Lai, D. Marras, L. Musa, A. Nappi, B. Hay, K. N. Moore, R. W. Moore, D. J. Munday, M. D. Needham, M. A. Parker, T. O. White, S. A. Wotton, G. Barr, H. Blümer, G. Bocquet, J. Bremer, A. Ceccucci, J. Cogan, D. CundyN. Doble, G. Fischer, W. Funk, L. Gatignon, A. Gianoli, A. Gonidec, G. Govi, P. Grafström, A. Lacourt, S. Luitz, V. Marzulli, J. P. Matheys, A. Norton, S. Palestini, B. Panzer-Steindel, D. Schinzel, H. Taureg, M. Velasco, O. Vossnack, H. Wahl, G. Wirrer, A. Gaponenko, V. Kekelidze, D. Madigojine, A. Mestvirishvili, N. Molokanova, Y. Potrebenikov, G. Tatishvili, A. Tkatchev, A. Zinchenko, O. Boyle, I. G. Knowles, V. J. Martin, H. Parsons, M. Contalbrigo, P. Dalpiaz, J. Duclos, A. Formica, P. L. Frabetti, M. Martini, F. Petrucci, M. Savrie, A. Bizzeti, M. Calvetti, G. Collazuol, G. Graziani, E. Iacopini, M. Lenti, A. Michetti, C. Talamonti, H. G. Becker, D. Coward, C. Ebersberger, H. Fox, A. Kalter, K. Kleinknecht, U. Koch, L. Köpke, B. Renk, J. Scheidt, J. Schmidt, Y. Schue, V. Schönharting, R. Wilhelm, M. Wittgen, J. C. Chollet, S. Crépé, L. Fayard, L. Iconomidou-Fayard, J. Ocariz, G. Unal, I. Wingerter, G. Anzivino, P. Cenci, P. Lubrano, M. Pepe, P. Calafiura, R. Carosi, R. Casali, C. Cerri, M. Cirilli, F. Costantini, R. Fantechi, S. Giudici, B. Gorini, I. Mannelli, G. Pierazzini, M. Sozzi, J. B. Cheze, M. De Beer, P. Debu, R. Granier de Cassagnac, P. Hristov, E. Mazzucato, B. Peyaud, S. Schanne, R. Turlay, B. Vallage, I. Augustin, M. Bender, M. Holder, M. Ziolkowski, R. Arcidiacono, C. Biino, R. Cester, F. Marchetto, E. Menichetti, N. Pastrone, J. Nassalski, E. Rondio, M. Szleper, W. Wislicki, S. Wronka, H. Dibon, M. Jeitler, M. Markytan, I. Mikulec, G. Neuhofer, M. Pernicka, A. Taurok

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

A new precision measurement of the Ξ0 mass has been performed at the NA48 experiment at the CERN SPS. The value obtained is [1314.82±0.06 (stat.) ±0.2 (syst.)] MeV/c2. The branching ratios of Xi;0 radiative decays have been measured as: Br(Ξ0 → Λγ) = [1.90 ± 0.34(stat.) ± 0.19(syst.)] · 10-3 and Br(Ξ0 → ∑0γ) = [3.14 ± 0.76(stat.) ± 0.32(syst.)] · 10-3.

Original languageEnglish (US)
Pages (from-to)69-76
Number of pages8
JournalEuropean Physical Journal C
Volume12
Issue number1
DOIs
StatePublished - 2000

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)

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