X (3872) in QCD sum rules

被引：0
|
作者：
Matheus, R. D. [1 ]
机构：
[1] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, SP, Brazil
来源：
BRAZILIAN JOURNAL OF PHYSICS | 2007年 / 37卷 / 01期
关键词：
QCD sum rules; tetraquarks; axial vector mesons;
D O I：
10.1590/S0103-97332007000100020
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
QCD spectral sum rules is used to test the nature of the meson X(3872), assumed to be an exotic four-quark (ccqq) state with J(PC) = 1(++). For definiteness, the current proposed recently by Maiani ct al [1] is used, at leading order in alpha(s), considering the contributions of higher dimension condensates. The value M-X = (3.94 +/- 0.11) GeV is found which is compatible, within the errors, with the experimental candidate X(3872). The uncertainties of our estimates are mainly due to the one from the c quark mass.
引用
收藏
页码：63 / 66
页数：4
相关论文
共 50 条
  • [21] Study of the D* ρ system using QCD sum rules
    Martinez Torres, A.
    Khemchandani, K. P.
    Nielsen, M.
    Navarra, F. S.
    Oset, E.
    XXXVI BRAZILIAN WORKSHOP ON NUCLEAR PHYSICS, 2014, 1625 : 59 - 65
  • [22] Calculation of coupling constant gφπγ in QCD sum rules
    Aydin, C
    Yilmaz, AH
    MODERN PHYSICS LETTERS A, 2004, 19 (28) : 2129 - 2134
  • [23] {Q}{~(('))s}Molecular States in QCD Sum Rules
    张建荣
    黄明球
    CommunicationsinTheoreticalPhysics, 2010, 54 (12) : 1075 - 1090
  • [24] Analysis of the X0(2900) as the scalar tetraquark state via the QCD sum rules
    Wang, Zhi-Gang
    INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 2020, 35 (30):
  • [25] 0+ tetraquark states from improved QCD sum rules:delving into X(5568)
    张建荣
    邹景岚
    吴金云
    Chinese Physics C, 2018, (04) : 80 - 90
  • [26] 0+ tetraquark states from improved QCD sum rules: delving into X(5568)
    Zhang, Jian-Rong
    Zou, Jing-Lan
    Wu, Jin-Yun
    CHINESE PHYSICS C, 2018, 42 (04)
  • [27] Recent progress in QCD condensate evaluations and sum rules
    Gubler, Philipp
    Satow, Daisuke
    PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, 2019, 106 : 1 - 67
  • [28] Excited decuplet baryons from QCD sum rules
    Lee, Frank X.
    NUCLEAR PHYSICS A, 2007, 791 (3-4) : 352 - 364
  • [29] QCD sum rules and models for generalized parton distributions
    Radyushkin, A
    ANNALEN DER PHYSIK, 2004, 13 (11-12) : 718 - 730
  • [30] Analysis of X(5568) as Scalar Tetraquark State in Diquark-Antidiquark Model with QCD Sum Rules
    Wang, Zhi-Gang
    COMMUNICATIONS IN THEORETICAL PHYSICS, 2016, 66 (03) : 335 - 339
12345