QCD_SUM_RULES

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相关机构：国防科学技术大学中国科学院大学华中师范大学更多>>
相关期刊：《Chinese Physics Letters》《Science Bulletin》《Chinese Physics C》《IMP & HIRFL Annual Report》更多>>
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B_(c) meson and its scalar cousin with QCD sum rules
《Chinese Physics C》2024年第10期48-58,共11页Zhi-Gang Wang 
Supported by the National Natural Science Foundation,China(12175068)。
In this study,we use the optical theorem to calculate the next-to-leading order corrections to the QCD spectral densities directly in the QCD sum rules for the pseudoscalar and scalar B_(c) mesons.We use experimental ...
关键词：next-to-leading order contributions QCD sum rules 
Strong vertices of bottom mesons B and B^(*) and bottomonia Υ,ηb
《Chinese Physics C》2024年第1期17-28,共12页卢杰 于国梁 王志刚 吴彬 
Supported by the National Natural Science Foundation of China(12175068);Natural Science Foundation of Hebei Province,China(A2018502124)。
In this study,the strong coupling constants of vertices BBΥ,BB^(∗)Υ,B^(∗)B^(∗)Υ,BB^(∗)ηb,and B^(∗)B^(∗)ηb are analyzed in the framework of QCD sum rules.All possible off-shell cases and the contributions of vacuu...
关键词：bottom meson strong coupling constants QCD sum rules 
Revisiting D-mesontwist-2,3 distribution amplitudes
《Chinese Physics C》2023年第5期73-81,共9页钟涛 黄冬 付海冰 
Supported in part by the National Natural Science Foundation of China(12265009,12265010);the Project of Guizhou Provincial Department of Science and Technology(ZK[2021]024,ZK[2023]142);the Project of Guizhou Provincial Department of Education(KY[2021]030);the Chongqing Graduate Research and Innovation Foundation(ydstd1912)。
Owing to the significant difference between the experimental measurements and the theoretical predictions of the standard model(SM)for the value of R(D)of the semileptonic decay B→Dtve,researchers speculate that this...
关键词：meson distribution amplitude QCD sum rules semileptonic decay 
A comprehensive revisit of the ρ meson with improved Monte-Carlo based QCD sum rules
《Chinese Physics C》2017年第7期96-106,共11页王齐男 张珠峰 T.G.Steele 金洪英 黄卓然 
Supported by NSFC(11175153,11205093,11347020);Open Foundation of the Most Important Subjects of Zhejiang Province;K.C.Wong Magna Fund in Ningbo University;Supported by the Natural Sciences and Engineering Research Council of Canada(NSERC)
We improve the Monte-Carlo based QCD sum rules by introducing the rigorous Hoolder-inequalitydetermined sum rule window and a Breit-Wigner type parametrization for the phenomenological spectral function.In this improv...
关键词：QCD sum rules Hlder inequality phenomenological spectral function αs corrections to dimension-4 operators 
Revisiting the Twist-3 Distribution Amplitudes of K Meson Within the QCD Background Field Approach
《Communications in Theoretical Physics》2012年第8期261-270,共10页钟涛 吴兴刚 韩华勇 廖其力 付海斌 方祯云 
Supported by the Fundamental Research Funds for the Central Universities under Grant No.CDJXS1102209;the Program for New Century Excellent Talents in University under Grant No.NCET-10-0882;by Natural Science Foundation of China under GrantNo.11075225
In the present paper, we investigate the kaon twist-3 distribution amplitudes （DAs）Cp within the QCD background field approach. The SUf （3）-breaking effects are studied in detail under a systematical way, especiaJ...
关键词：QCD sum rules Twist-3 wavefunction KAON 
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