Quasibound states of Eta-Mesic deuteron and 3He

被引：0
作者：
Kelkar, N. G. [1 ]
Khemchandani, K. P. [1 ]
Jain, B. K. [1 ]
机构：
[1] Univ Los Andes, Dept Fis, Bogota 4976AA, Colombia
来源：
FEW-BODY PROBLEMS IN PHYSICS, 2005 | 2007年
关键词：
D O I：
10.1142/9789812706881_0059
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
The concept of collision time in scattering is extended to evaluate the delay time in off-shell elastic scattering reactions at negative energies and is used to search for the quasibound states of eta mesons and light nuclei. The eta-nucleus transition matrix is evaluated by solving few body equations within a finite rank approximation. The elementary interaction between the eta meson and a nucleon is described in terms of a coupled channel transition matrix which gives rise to an eta N scattering length of 0.28 + i0.19 fm. The eta He-3 state predicted within this approach is in good agreement with the recent claim of an eta-mesic state confirmed from investigations of the photoproduction reaction gamma He-3 -> eta X.
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页码：310 / 314
页数：5
相关论文
共 32 条
  • [1] BELYAEV VB, 1990, SPRINGER SERIES NUCL
  • [2] IDENTIFICATION OF THE D+P-]HE-3+ETA REACTION VERY NEAR THRESHOLD - CROSS-SECTION AND DEUTERON TENSOR ANALYZING POWER
    BERGER, J
    BOIVIN, M
    BOUDARD, A
    FLEURY, P
    GERMOND, JF
    GOLDZAHL, L
    KERBOUL, C
    MAYER, B
    PLOUIN, F
    SATTA, L
    WILKIN, C
    [J]. PHYSICAL REVIEW LETTERS, 1988, 61 (08) : 919 - 922
  • [3] OFF-SHELL MODEL FOR THRESHOLD PIONIC ETA-PRODUCTION ON A NUCLEON AND FOR ETA-N SCATTERING
    BHALERAO, RS
    LIU, LC
    [J]. PHYSICAL REVIEW LETTERS, 1985, 54 (09) : 865 - 868
  • [4] Measurement of the quasifree p+n->d+eta reaction near threshold
    Calen, H
    Dyring, J
    Fransson, K
    Gustafsson, L
    Haggstrom, S
    Hoistad, B
    Johansson, A
    Johansson, T
    Kullander, S
    Mortsell, A
    Ruber, RJMY
    Schuberth, U
    Zlomanczuk, J
    Ekstrom, C
    Kilian, K
    Oelert, W
    Renken, V
    Sefzick, T
    Bondar, A
    Kuzmin, A
    Shwartz, B
    Sidorov, V
    Sukhanov, A
    Kupsc, A
    Marciniewski, P
    Stepaniak, J
    Dunin, V
    Morosov, B
    Povtorejko, A
    Sukhanov, A
    Zernov, A
    Zabierowski, J
    Wilhelmi, Z
    [J]. PHYSICAL REVIEW LETTERS, 1997, 79 (14) : 2642 - 2645
  • [5] SEARCH FOR BOUND-STATES OF THE ETA-MESON IN LIGHT-NUCLEI
    CHRIEN, RE
    BART, S
    PILE, P
    SUTTER, R
    TSOUPAS, N
    FUNSTEN, HO
    FINN, JM
    LYNDON, C
    PUNJABI, V
    PERDRISAT, CF
    LIEB, BJ
    KISHIMOTO, T
    LIU, LC
    ESTEP, R
    DROPESKY, B
    STRONACH, CE
    STEARNS, RL
    [J]. PHYSICAL REVIEW LETTERS, 1988, 60 (25) : 2595 - 2598
  • [6] η-d and K--d zero-energy scattering:: A Faddeev approach -: art. no. 024004
    Deloff, A
    [J]. PHYSICAL REVIEW C, 2000, 61 (02): : 240041 - 240046
  • [7] Eisenbud L., 1948, THESIS
  • [8] Analysis of the low-energy ηNN-dynamics within a three-body formalism
    Fix, A
    Arenhövel, H
    [J]. EUROPEAN PHYSICAL JOURNAL A, 2000, 9 (01) : 119 - 129
  • [9] TIME-DELAY ANALYSIS OF THE INTERPRETATION OF NARROW SIGMA-HYPERNUCLEAR STATES AS BOUND-STATES IN THE CONTINUUM
    FRAXEDAS, J
    SESMA, J
    [J]. PHYSICAL REVIEW C, 1988, 37 (05): : 2016 - 2021
  • [10] Nonexistence of a ηNN quasibound state -: art. no. 021001
    Garcilazo, H
    Peña, MT
    [J]. PHYSICAL REVIEW C, 2001, 63 (02):
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