a(4)(2010) meson decaying into eta pi(0)

被引：0
|
作者：
Prokoshkin, YD
Sadovsky, SA
Sobol, AE
机构：
来源：
PHYSICS OF ATOMIC NUCLEI | 1996年 / 59卷 / 08期
关键词：
D O I：
暂无
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
A mass-independent partial-wave analysis of the reaction pi(-)p --> eta pi(0)n is performed in the eta pi(0) mass range above 1.6 GeV with S, P, D, F, and G waves. Experimental data has been collected with the GAMS-2000 multiphoton spectrometer in a 38-GeV/c pion beam from the 70-GeV MEP accelerator. A resonance with quantum numbers J(PC) = 4(++) and I-G = 1(-) is observed in the G wave. Its mass and width are measured to be M = 2010 +/- 20 MeV and Gamma = 370 +/- 80 MeV. The mechanism that governs the production of the observed a(4)(0) meson is dominated by the natural-spin-parity t-channel exchange. The measured unnatural-to-natural cross-section ratio is 0.60 +/- 0.16.
引用
收藏
页码：1333 / 1335
页数：3
相关论文
共 50 条
  • [1] STUDY OF X0 MESON DECAYING IN TO PI PI-ETA
    UPADHYAY, PN
    INDIAN JOURNAL OF PURE & APPLIED PHYSICS, 1974, 12 (01) : 49 - 50
  • [2] Observation of the a(4)(0) meson in the eta pi(0) decay channel
    Donskov, SV
    Inyakin, AV
    Kachanov, VA
    Khaustov, GV
    Kolosov, VN
    Kondashov, AA
    Kulik, AV
    Landsberg, GL
    Lednev, AA
    Lishin, VA
    Polovnikov, SA
    Polyakov, VA
    Prokoshkin, YD
    Sadovsky, SA
    Samoylenko, VD
    Shagin, PM
    Shtannikov, AV
    Singovsky, AV
    Sobol, AE
    Sugonyaev, VP
    Bricman, C
    Stroot, JP
    Gouanere, M
    Peigneux, JP
    Poulet, M
    Alde, D
    Knapp, EA
    Inaba, S
    Kinashi, T
    Kobayashi, M
    Takamatsu, K
    Tsuru, T
    Binon, F
    Nakamura, T
    Boutemeur, M
    PHYSICS OF ATOMIC NUCLEI, 1996, 59 (06) : 982 - 990
  • [3] STUDY OF DELTA MESON DECAYING INTO ETA PI WITH -] GAMMA GAMMA
    UPADHYAY, PN
    INDIAN JOURNAL OF PURE & APPLIED PHYSICS, 1973, 11 (06) : 425 - 426
  • [4] HADROPRODUCTION AND PHOTOPRODUCTION OF PI(0)-MESON, ETA-MESON, AND ETA'-MESON IN THE QUARK-GLUON STRING MODEL
    ARAKELYAN, GG
    EREMYAN, SS
    PHYSICS OF ATOMIC NUCLEI, 1995, 58 (07) : 1241 - 1246
  • [5] OBSERVATION OF A SPIN-4 NEUTRAL MESON WITH 2GEV MASS DECAYING IN PI-0 PI-0
    APEL, WD
    AUGENSTEIN, K
    BERTOLUCCI, E
    DONSKOV, SV
    INYAKIN, AV
    KACHANOV, VA
    KITTENBERGER, W
    KRASNOKUTSKY, RN
    KRUGER, M
    LEDER, G
    LEDNEV, AA
    MANNELLI, I
    MIKHAILOV, YV
    MULLER, H
    PIERAZZINI, GM
    PROKOSHKIN, YD
    QUAGLIA, M
    SCHNEIDER, H
    SCRIBANO, A
    SERGIAMPIETRI, F
    SHUVALOV, RS
    SIGURDSSON, G
    STEUER, M
    VINCELLI, ML
    PHYSICS LETTERS B, 1975, 57 (04) : 398 - 402
  • [6] MEASUREMENT OF PBARP-]PI-0PI-0,PI-0-ETA-0 IN T AND U-MESON REGION
    DULUDE, RS
    LANOU, RE
    MASSIMO, JT
    PEASLEE, DC
    THORNTON, RK
    BARTON, DS
    MARX, M
    NELSON, BA
    ROSENSON, L
    DEMARZO, C
    GUERRIERO, L
    POSA, F
    VACCARI, E
    WALDNER, F
    PHYSICS LETTERS B, 1978, 79 (03) : 329 - 334
  • [7] EVIDENCE FOR A 1.9 GEV MESON DECAYING INTO ETA-ETA'
    ALDE, D
    BINON, FG
    BRICMAN, C
    DONSKOV, SV
    GOUANERE, M
    INYAKIN, AV
    KACHANOV, VA
    KHAUSTOV, GV
    KNAPP, EA
    KULIK, AV
    LEDNEV, AA
    PEIGNEUX, JP
    PROKOSHKIN, YD
    RODNOV, YV
    SADOVSKY, SA
    SAMOYLENKO, VD
    SHAGIN, PM
    SHTANNIKOV, AV
    SINGOVSKY, AV
    STROOT, JP
    SUGONYAEV, VP
    PHYSICS LETTERS B, 1989, 216 (3-4) : 447 - 450
  • [8] REMARKS ON ETA-MESON CUSP EFFECT IN PI0 PHOTOPRODUCTION
    MENCUCCI.C
    REALE, A
    NUOVO CIMENTO A, 1967, 48 (02): : 579 - +
  • [9] OBSERVATION OF A 1750 MEV NARROW MESON DECAYING INTO ETA-ETA
    ALDE, D
    BINON, F
    BRICMAN, C
    DONSKOV, SV
    GOUANERE, M
    INYAKIN, AV
    KACHANOV, VA
    KAKAURIDZE, DB
    KHAUSTOV, GV
    KNAPP, EA
    KULIK, AV
    LAGNAUX, JP
    LEDNEV, AA
    MIKHAILOV, YV
    MOUTHUY, T
    PEIGNEUX, JP
    PROKOSHKIN, YD
    RODNOV, YV
    SADOVSKY, SA
    SAMOILENKO, VD
    SHAGIN, PM
    SHTANNIKOV, AV
    SINGOVSKY, AV
    STROOT, JP
    SUGONYAEV, VP
    PHYSICS LETTERS B, 1986, 182 (01) : 105 - 107
  • [10] FINAL-STATE INTERACTIONS IN 3 MESON SYSTEMS - ANALYSIS OF DATA ON (P)OVER-BAR-P-]PI-0-PI-0-PI-0 AND ETA-ETA-PI-0 AT REST
    ANISOVICH, VV
    BUGG, DV
    SARANTSEV, AV
    ZOU, BS
    PHYSICAL REVIEW D, 1994, 50 (03): : 1972 - 1991
12345