NEW MASS FORMULA FOR OCTET AND DECUPLET BARYONS

被引:29
|
作者
MORPURGO, G [1 ]
机构
[1] IST NAZL FIS NUCL, GENOA, ITALY
关键词
D O I
10.1103/PhysRevLett.68.139
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The general parametrization method [Phys. Rev. D 40, 2997 (1989)] (an exact consequence of a QCD-like relativistic field theory) is used to parametrize the masses of 8 and 10 baryons to second order in flavor breaking. Because at first order in flavor breaking, three-quark contributions to octet masses are very small, we neglect such contributions at second order and derive a "corrected" Gell-Mann-Okubo formula; when written in a way free from electromagnetic corrections, it is 1/2 (n + XI-0) + T = 1/4 (3-LAMBDA + SIGMA+) with T = XI*- - 1/2 (OMEGA + SIGMA*) and SIGMA+ = 2-SIGMA+ - SIGMA-0 + 2(n - p). The two sides of the formula are respectively 1132.4 +/- 0.8 and 1133.9 +/- 0.1 MeV.
引用
收藏
页码:139 / 141
页数:3
相关论文
共 50 条
  • [21] Charge radii of octet and decuplet baryons in chiral constituent quark model
    NEETIKA SHARMA
    HARLEEN DAHIYA
    Pramana, 2013, 81 : 449 - 465
  • [22] Charge radii of octet and decuplet baryons in chiral constituent quark model
    Sharma, Neetika
    Dahiya, Harleen
    PRAMANA-JOURNAL OF PHYSICS, 2013, 81 (03): : 449 - 465
  • [23] Color octet contribution in exclusive P-wave charmonium decay into octet and decuplet baryons
    Wong, SMH
    EUROPEAN PHYSICAL JOURNAL C, 2000, 14 (04): : 643 - 671
  • [24] Axial charges of octet and decuplet baryons in a perturbative chiral quark model
    Liu, X. Y.
    Samart, D.
    Khosonthongkee, K.
    Limphirat, A.
    Xu, K.
    Yan, Y.
    PHYSICAL REVIEW C, 2018, 97 (05)
  • [25] Axial charges of octet and decuplet baryons (vol 82, 014007, 2010)
    Choi, Ki-Seok
    Plessas, W.
    Wagenbrunn, R. F.
    PHYSICAL REVIEW D, 2010, 82 (03):
  • [26] Octet and decuplet baryon σ terms and mass decompositions
    Copeland, P. M.
    Ji, Chueng-Ryong
    Melnitchouk, W.
    PHYSICAL REVIEW D, 2023, 107 (09)
  • [27] The relativistic chiral Lagrangian for decuplet and octet baryons at next-to-leading order
    Måns Holmberg
    Stefan Leupold
    The European Physical Journal A, 2018, 54
  • [28] On S U(3)F positive-parity octet and decuplet baryons
    Chen, Chen
    12TH INTERNATIONAL WORKSHOP ON THE PHYSICS OF EXCITED NUCLEONS (NSTAR 2019), 2020, 241
  • [29] The relativistic chiral Lagrangian for decuplet and octet baryons at next-to-leading order
    Holmberg, Mans
    Leupold, Stefan
    EUROPEAN PHYSICAL JOURNAL A, 2018, 54 (06):
  • [30] Vacuum structure, chiral symmetry breaking and static properties of octet and decuplet baryons
    Panda, AR
    Roy, KC
    Sahoo, RK
    INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS, 1996, 5 (04) : 649 - 667