Heavy quark (q)over-barq matrix elements in the nucleon from perturbative QCD -: art. no. 094028

被引：20
|
作者：
Kryjevski, A [1 ]
机构：
[1] Univ Washington, Dept Phys, Seattle, WA 98195 USA
[2] Univ Washington, Inst Nucl Theory, Seattle, WA 98195 USA
来源：
PHYSICAL REVIEW D | 2004年 / 70卷 / 09期
关键词：
D O I：
10.1103/PhysRevD.70.094028
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The scalar heavy quark content of the nucleon, M-q=<N|m(q)(q) over barq|N>, is relevant for computing the interaction of dark matter candidates with ordinary matter, while M-s is important for predicting the properties of dense matter. We compute M-q in perturbative QCD to O(alpha(3)). As one goes from M-t to M-c the leading order contribution decreases as the number of light quarks is dropping, while the radiative corrections grow and are all positive. The leading source of uncertainty in the calculation is due to the poorly known value of M-s. The Higgs-nucleon coupling is estimated to be g(hNN)similar or equal to1.7x10(-3).
引用
收藏
页码：094028 / 1
页数：4
相关论文
共 50 条
  • [31] Ground-state scalar (q)over-barq nonet:: SU(3) mass splittings and strong, electromagnetic, and weak decay rates (vol D 69, art no 014010, 2004) -: art. no. 059901
    Scadron, MD
    Rupp, G
    Kleefeld, F
    van Beveren, E
    PHYSICAL REVIEW D, 2004, 69 (05):
  • [32] Perturbative calculation of improvement coefficients to O(g2a) for bilinear quark operators in lattice QCD -: art. no. 114503
    Taniguchi, Y
    Ukawa, A
    PHYSICAL REVIEW D, 1998, 58 (11)
  • [33] Perturbative renormalization factors of ΔS=1 four-quark operators for domain-wall QCD -: art. no. 054504
    Aoki, S
    Kuramashi, K
    PHYSICAL REVIEW D, 2001, 63 (05):
  • [34] O(a)-improved quark action on anisotropic lattices and perturbative renormalization of heavy-light currents -: art. no. 074501
    Harada, J
    Kronfeld, AS
    Matsufuru, H
    Nakajima, N
    Onogi, T
    PHYSICAL REVIEW D, 2001, 64 (07):
  • [35] Light hadron spectrum and quark masses from quenched lattice QCD -: art. no. 034503
    Aoki, S
    Boyd, G
    Burkhalter, R
    Ejiri, S
    Fukugita, M
    Hashimoto, S
    Iwasaki, Y
    Kanaya, K
    Kaneko, T
    Kuramashi, Y
    Nagai, K
    Okawa, M
    Shanahan, HP
    Ukawa, A
    Yoshié, T
    PHYSICAL REVIEW D, 2003, 67 (03)
  • [36] Heavy quark polarizations of e+e-→q(q)over-barh in the general two Higgs doublet model -: art. no. 077702
    Huang, CS
    Zhu, SH
    PHYSICAL REVIEW D, 2002, 65 (07):
  • [37] Proton breakup in high-energy pA collisions from perturbative QCD -: art. no. 092301
    Dumitru, A
    Gerland, L
    Strikman, M
    PHYSICAL REVIEW LETTERS, 2003, 90 (09) : 1 - 092301
  • [38] Matrix elements relevant for ΔI=1/2 rule and ε′/ε from lattice QCD with staggered fermions -: art. no. 074502
    Pekurovsky, D
    Kilcup, G
    PHYSICAL REVIEW D, 2001, 64 (07)
  • [39] Quark-gluon mixed condensate g⟨(q)over-barσμνGμνq⟩ in SU(3)c quenched lattice QCD -: art. no. 054504
    Doi, T
    Ishii, N
    Oka, M
    Suganuma, H
    PHYSICAL REVIEW D, 2003, 67 (05):
  • [40] (γ*q(q)over-bar)-Reggeon vertex in next-to-leading order QCD -: art. no. 056014
    Bartels, J
    Gieseke, S
    Qiao, CF
    PHYSICAL REVIEW D, 2001, 63 (05):
12345