Test of charge conjugation invariance (CROSBI ID 115996)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Nefkens, B.M.K. ; Prakhov, S. ; Gardestig, A. ; Allgower, C.E. ; Bekrenev, V. ; Briscoe, W.J. ; Clajus, M. ; Comfort, J.R. ; Craig, K. ; Grosnick, D. ; Isenhower, D. ; Knecht, N. ; Koetke, D. ; Koulbardis, A. ; Kozlenko, N. ; Kruglov, S. ; Lolos, G. ; Lopatin, I. ; Manley, D.M. ; Manweiler, R. ; Marušić, Aljoša ; McDonald, S. ; Olmsted, J. ; Papandreou, Z. ; Peaslee, D. ; Phaisangittisakul, N. ; Price, J.W. ; Ramirez, A.F. ; Sadler, M. ; Shafi, A. ; Spinka, H. ; Stanislaus, T.D.S. ; Starostin, A. ; Staudenmaier, H.M. ; Supek, Ivan ; Tippens, W.B.
engleski
Test of charge conjugation invariance
We report on the first determination of upper limits on the branching ratio (BR) of eta decay to pi^0 pi^0 gamma and to pi^0 pi^0 pi^0gamma. Both decay modes are strictly forbidden by charge conjugation (C) invariance. Using the Crystal Ball multiphoton detector, we obtained BR(eta --> pi^0 pi^0 gamma)<5×10-4 at the 90% confidence level, in support of C invariance of isoscalar electromagnetic interactions of the light quarks. We have also measured BR(eta --> pi^0 pi^0 pi^0gamma)<6×10-5 at the 90% confidence level, in support of C invariance of isovector electromagnetic interactions.
conjunction invariance; sovector; electromagnetic interactions
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