PROTON-ANTIPROTON ANNIHILATION INTO ETA-ETA-PI-OBSERVATION OF A SCALAR RESONANCE DECAYING INTO ETA-ETA

被引:83
作者
AMSLER, C
AUGUSTIN, I
BAKER, CA
BARNETT, BM
BATTY, CJ
BECKMANN, R
BEUCHERT, K
BIRIEN, P
BISTIRLICH, J
BLUM, P
BOSSINGHAM, R
BOSSY, H
BRAUNE, K
BUGG, DV
BURCHELL, M
CASE, T
COOPER, A
CROWE, KM
DIETZ, HP
VONDOMBROWSKI, S
DOSER, M
DUNNWEBER, W
ENGELHARDT, D
ENGLERT, M
FAESSLER, MA
FELIX, C
FOLGER, G
HACKMANN, R
HADDOCK, RP
HEINSIUS, FH
HESSEY, NP
HIDAS, P
ILLINGER, P
JAMNIK, D
JAVORFI, Z
KALINOWSKY, H
KAMMLE, B
KIEL, T
KLEMPT, E
KOCH, H
KONIGSMANN, K
KOLO, C
KUNZE, M
LANDUA, R
LUDEMANN, J
MATTHAEY, H
MERKEL, M
MERLO, JP
MEYER, CA
MEYERBERKHOUT, U
机构
[1] UNIV KARLSRUHE,W-7500 KARLSRUHE,GERMANY
[2] RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND
[3] UNIV MAINZ,W-6500 MAINZ,GERMANY
[4] UNIV HAMBURG,W-2000 HAMBURG 13,GERMANY
[5] RUHR UNIV BOCHUM,W-4630 BOCHUM,GERMANY
[6] LAWRENCE BERKELEY LAB,BERKELEY,CA 94720
[7] UNIV MUNICH,W-8000 MUNICH 2,GERMANY
[8] QUEEN MARY & WESTFIELD COLL,LONDON E1 4NS,ENGLAND
[9] CERN,CH-1211 GENEVA 23,SWITZERLAND
[10] UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024
[11] HUNGARIAN ACAD SCI,H-1525 BUDAPEST,HUNGARY
[12] CTR RECH NUCL,F-67037 STRASBOURG,FRANCE
关键词
D O I
10.1016/0370-2693(92)91057-G
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The results of a measurement of ppBAR annihilation at rest into etaetapi0 are presented. Assuming a resonance dominated model for the annihilation process an isoscalar J(PC)=0++ resonance decaying into etaeta is observed with a mass of 1560+/-25 MeV/c2 and a width of 245+/-50 MeV/c2.
引用
收藏
页码:347 / 354
页数:8
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