Bs*BK vertex from QCD sum rules

被引：26

作者：

Cerqueira, A., Jr. ^{[2
]}

Osorio Rodrigues, B. ^{[2
]}

Bracco, M. E. ^{[1
]}

机构：

[1] Univ Estado Rio de Janeiro, Fac Technol, BR-27537000 Resende, RJ, Brazil

[2] Univ Estado Rio de Janeiro, Inst Fis, BR-20550900 Rio De Janeiro, Brazil

来源：

NUCLEAR PHYSICS A | 2012年 / 874卷

关键词：

QCD sum rules; Coupling constant of three-meson processes; Bottom mesons; HEAVY MESONS; D-PI; COUPLINGS; VERTICES; PIONS;

D O I：

10.1016/j.nuclphysa.2011.11.004

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The form factors and the coupling constant of the B-s*BK vertex are calculated using the QCD sum rules method. Three-point correlation functions are computed considering both K and B mesons off-shell and, after an extrapolation of the QCDSR results, we obtain the coupling constant of the vertex. We study the uncertainties in our result by calculating a third form factor obtained when the B-s* is the off-shell meson, considering other acceptable structures and computing the variations of the sum rules' parameters. The form factors obtained have different behaviors but their simultaneous extrapolations reach to the same value of the coupling constant gB(s)*BK = 10.6 +/- 1.7. We compare our result with other theoretical estimates. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：130 / 142

页数：13

共 50 条

[41] Calculation of coupling constant gφπγ in QCD sum rules
Aydin, C
Yilmaz, AH
MODERN PHYSICS LETTERS A, 2004, 19 (28) : 2129 - 2134
[42] {Q}{~(('))s}Molecular States in QCD Sum Rules
张建荣
黄明球
CommunicationsinTheoreticalPhysics, 2010, 54 (12) : 1075 - 1090
[43] Recent progress in QCD condensate evaluations and sum rules
Gubler, Philipp
Satow, Daisuke
PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, 2019, 106 : 1 - 67
[44] QCD sum rules and models for generalized parton distributions
Radyushkin, A
ANNALEN DER PHYSIK, 2004, 13 (11-12) : 718 - 730
[45] QCD sum rules study of the JPC=1- - charmonium Y mesons
Albuquerque, R. M.
Nielsen, M.
NUCLEAR PHYSICS A, 2009, 815 : 53 - 66
[46] Charmonium spectral functions at finite temperature from a Bayesian analysis of QCD sum rules
Gubler, Philipp
Morita, Kenji
Oka, Makoto
INTERNATIONAL CONFERENCE ON THE STRUCTURE OF BARYONS (BARYONS '10), 2011, 1388
[47] JPC=1++ heavy hybrid masses from QCD sum-rules
Kleiv, R. T.
Harnett, D.
Steele, T. G.
Jin, Hong-ying
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 2013, 234 : 150 - 153
[48] Quark-hadron duality and properties of pseudoscalar mesons from QCD sum rules
Lucha, Wolfgang
Melikhov, Dmitri
QUARK CONFINEMENT AND THE HADRON SPECTRUM VII, 2007, 892 : 525 - 525
[49] Meson-baryon couplings and the F/D ratio from QCD sum rules
Kim, H
Doi, T
Oka, M
Lee, SH
NUCLEAR PHYSICS A, 2000, 662 (3-4) : 371 - 394
[50] Thermal modification of bottomonium spectra from QCD sum rules with the maximum entropy method
Suzuki, Kei
Gubler, Philipp
Morita, Kenji
Oka, Makoto
NUCLEAR PHYSICS A, 2013, 897 : 28 - 41

← 1 2 3 4 5 →