OBSERVATION OF A 2++ RESONANCE AT 1515 MEV IN PROTON - ANTIPROTON ANNIHILATIONS INTO 3-PI-0

被引：95
作者：
AKER, E
机构：
[1] Universität Zürich
[2] Universität Karlsruhe
[3] Rutherford Appleton Laboratory, Chilton, Didcot
[4] Universität Hamburg
[5] Lawrence Berkeley Laboratory, University of California, Berkeley
[6] Universität München
[7] CERN
[8] Institut für Material und Festkörperforschung, Kernforschungszentrum Karlsruhe
[9] University of California, Los Angeles
[10] Universität Mainz
[11] Queen Mary and Westfield College, London
[12] Centre de Recherches Nucléaires
来源：
PHYSICS LETTERS B | 1991年 / 260卷 / 1-2期
关键词：
D O I：
10.1016/0370-2693(91)90999-7
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Antiproton-proton annihilations at rest into 3-pi-0 are analyzed in terms of pi-0-pi-0 final state interactions. A J(PC) = 2++ resonance at a mass of 1515 +/- 10 MeV with a width of 120 +/- 10 MeV is required to explain the data. This result is supported by previous observations made on the pi-pi system in pBARp and pBARn annihilations which show that the resonance has I = 0. This resonance is practically degenerate in mass with the f'2 (1525) but the two resonances have very different production and decay characteristics.
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页码：249 / 258
页数：10
相关论文
共 29 条
  • [1] AKER E, UNPUB
  • [2] DALITZ-PLOT ANALYSIS INCLUDING DUALITY
    ALTARELLI, G
    RUBINSTEIN, HR
    [J]. PHYSICAL REVIEW, 1969, 183 (05): : 1469 - +
  • [3] PRODUCTION OF 3 CHARGED PIONS IN -PBAR+N ANNIHILATION AT REST
    ANNINOS, P
    GRAY, L
    HAGERTY, P
    KALOGEROPOULOS, T
    ZENONE, S
    BIZZARRI, R
    CIAPETTI, G
    GASPERO, M
    LAAKSO, I
    LICHTMAN, S
    MONETI, GC
    [J]. PHYSICAL REVIEW LETTERS, 1968, 20 (08) : 402 - +
  • [4] [Anonymous], PHYS REV B
  • [5] Capture of slow neutrons
    Breit, G
    Wigner, E
    [J]. PHYSICAL REVIEW, 1936, 49 (07): : 0519 - 0531
  • [6] BRUN R, 1987, CERNDDEE841 REP
  • [7] EXPERIMENTAL RESULTS ON (KBARK) AND (KP) SYSTEMS AS OBSERVED IN ANNIHILATIONS PBARP -] KBARKPI AT REST
    CONFORTO, B
    MARECHAL, B
    MONTANET, L
    TOMAS, M
    DANLAU, C
    ASTIER, A
    COHENGAN.J
    DELLANEG.M
    BAUBILLIER, M
    DUBOC, J
    JAMES, F
    GOLDBERG, M
    SPENCER, D
    [J]. NUCLEAR PHYSICS B, 1967, B 3 (05) : 469 - +
  • [8] OBSERVATIONS ON PBARP-]3-P1-0 2-PI-0-ETA AT REST
    DEVONS, S
    KOZLOWSK.T
    NEMETHY, P
    SHAPIRO, S
    DRIS, M
    HORWITZ, N
    KALOGERO.T
    SKELLY, J
    SMITH, R
    UTO, H
    [J]. PHYSICS LETTERS B, 1973, B 47 (03) : 271 - 274
  • [9] PHENOMENOLOGY OF AN F(1270)-GLUEBALL MIXTURE
    DONOGHUE, JF
    [J]. PHYSICAL REVIEW D, 1982, 25 (07): : 1875 - 1885
  • [10] PBARP ANNIHILATION INTO PI+PI- AND K+K- FROM ATOMIC P-STATES
    DOSER, M
    BOTLO, M
    AHMAD, S
    AMSLER, C
    ARMENTEROS, R
    AULD, EG
    AXEN, DA
    BAILEY, D
    BARLAG, S
    BEER, GA
    BIZOT, JC
    BUTLER, J
    COMYN, M
    DAHME, W
    DELCOURT, B
    DUCH, KD
    ERDMAN, KL
    FELDDAHME, F
    GASTALDI, U
    HEEL, M
    HOWARD, B
    HOWARD, R
    JEANJEAN, J
    KALINOWSKY, H
    KAYSER, F
    KLEMPT, E
    LAA, C
    LANDUA, R
    MARSHALL, GM
    MAY, B
    NGUYEN, H
    PREVOT, N
    RIEDLBERGER, J
    ROBERTSON, LP
    SABEV, C
    SCHAEFER, U
    SCHREIBER, O
    STRAUMANN, U
    TRUOL, P
    VONACH, H
    WHITE, BL
    WODRICH, RW
    ZIEGLER, M
    [J]. NUCLEAR PHYSICS A, 1988, 486 (3-4) : 493 - 511
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