The γ*N ⇆ Δ transition form factors

被引：0
|
作者：
Kamalov, SS [1 ]
Yang, SN [1 ]
机构：
[1] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
来源：
FEW-BODY PROBLEMS IN PHYSICS '99 | 2000年 / 12卷
关键词：
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We show that recent experiment data for the ratios E(1+)/M(1+) and S(1+)/M(1+) can be explained in a dynamical model for electromagnetic production of pions, together with a simple scaling assumption for the bare gamma *N Delta form factors. Within our model we find that the bare a is almost spherical and the electric E2 and Coulomb C2 quardrupole excitations of the physical a are nearly saturated by pion cloud contribution in Q(2) less than or equal to 4.0 GeV(2).
引用
收藏
页码：297 / 301
页数：5
相关论文
共 50 条
  • [1] γ*N → N(1535) transition form factors in QCD
    Aliev, T. M.
    Savc, M.
    PHYSICAL REVIEW D, 2013, 88 (05):
  • [2] Gravitational transition form factors of N(1535) → N
    Ozdem, U.
    Azizi, K.
    PHYSICAL REVIEW D, 2020, 101 (05)
  • [3] Momentum dependence of the N to Δ transition form factors
    Alexandrou, C
    Neff, H
    Negele, JW
    Schroers, W
    Tsapalis, A
    NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 2005, 140 : 293 - 295
  • [4] Comment on "Gravitational transition form factors of N(1535) → N"
    Polyakov, Maxim V.
    Tandogan, Asli
    PHYSICAL REVIEW D, 2020, 101 (11):
  • [5] Axial N→Δ(1232) and N→N*(1440) transition form factors
    Barquilla-Cano, D.
    Buchmann, A. J.
    Hernandez, E.
    PHYSICAL REVIEW C, 2007, 75 (06):
  • [6] A framework for the calculation of the ΔNγ* transition form factors on the lattice
    Agadjanov, Andria
    Bernard, Veronique
    Meissner, Ulf-G.
    Rusetsky, Akaki
    NUCLEAR PHYSICS B, 2014, 886 : 1199 - 1222
  • [7] Axial vector transition form factors of N → Δ in QCD
    Kucukarslan, A.
    Ozdem, U.
    Ozpineci, A.
    NUCLEAR PHYSICS B, 2016, 913 : 132 - 150
  • [8] Semirelativistic approximation to the γ*N → N (1520) and γ*N → N(1535) transition form factors
    Ramalho, G.
    PHYSICAL REVIEW D, 2017, 95 (05)
  • [9] ELECTROMAGNETIC N-NSTAR TRANSITION FORM-FACTORS
    DEVENISH, RCE
    EISENSCHITZ, TS
    KORNER, JG
    PHYSICAL REVIEW D, 1976, 14 (11) : 3063 - 3078
  • [10] The Q2-dependence of γ*N⇆Δ transition form factors
    Kamalov, SS
    Yang, SN
    NUCLEAR PHYSICS A, 2000, 663 : 405C - 408C
12345