Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Jian-Ming She"'
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 7, Pp 1-22 (2023)
Abstract We present a novel method for precisely determining the QCD running coupling from R uds measurements in electron-positron annihilation. When calculating the fixed-order perturbative QCD (pQCD) approximant of R uds, its effective coupling con
Externí odkaz:
https://doaj.org/article/cad25b6690df42279a398c893ccf9c64
Autor:
Jian-Ming Shen, Zhi-Jian Zhou, Sheng-Quan Wang, Jiang Yan, Zhi-Fei Wu, Xing-Gang Wu, Stanley J. Brodsky
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 4, Pp 1-14 (2023)
Abstract In addition to the evaluation of high-order loop contributions, the precision and predictive power of perturbative QCD (pQCD) predictions depends on two important issues: (1) how to achieve a reliable, convergent fixed-order series, and (2)
Externí odkaz:
https://doaj.org/article/270f28da53614c5fab64f7424a4c3713
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 1, Pp 1-8 (2023)
Abstract We analyse the top-quark decay at the next-to-next-to-leading order (NNLO) in QCD by using the Principle of Maximum Conformality (PMC) which provides a systematic way to eliminate renormalization scheme and scale ambiguities in perturbative
Externí odkaz:
https://doaj.org/article/55b1a8e177ff45779e02a6bb56bfd414
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 9, Pp 1-28 (2022)
Abstract In this paper, we give comprehensive analyses for event shape observables in electron-positron annihilation by using the Principle of Maximum Conformality (PMC) which is a rigorous scale-setting method to eliminate the renormalization scheme
Externí odkaz:
https://doaj.org/article/df2513125ba944be84c96f0b8e799691
Autor:
Xu-Dong Huang, Jiang Yan, Hong-Hao Ma, Leonardo Di Giustino, Jian-Ming Shen, Xing-Gang Wu, Stanley J. Brodsky
Publikováno v:
Nuclear Physics B, Vol 989, Iss , Pp 116150- (2023)
The Principle of Maximum Conformality (PMC), which generalizes the conventional Gell-Mann-Low method for scale-setting in perturbative QED to non-Abelian QCD, provides a rigorous method for achieving unambiguous scheme-independent, fixed-order predic
Externí odkaz:
https://doaj.org/article/c83938146cb24f00b9275641ee0beb91
Autor:
Jian-Ming, She, Yuan-Ling, Xi
Publikováno v:
Yi chuan = Hereditas. 32(5)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::ce1388fa6b630c7c17fec47cb44e83b3
https://pubmed.ncbi.nlm.nih.gov/20466626
https://pubmed.ncbi.nlm.nih.gov/20466626
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 4, Pp 1-7 (2021)
Abstract In the paper, we study the properties of the Z-boson hadronic decay width by using the $$\mathcal {O}(\alpha _s^4)$$ O ( α s 4 ) -order quantum chromodynamics (QCD) corrections with the help of the principle of maximum conformality (PMC). B
Externí odkaz:
https://doaj.org/article/bbb4ac34e59647c4a13a6e5971550613
Publikováno v:
Universe, Vol 9, Iss 4, p 193 (2023)
The setting of the renormalization scale (μr) in the perturbative QCD (pQCD) is one of the crucial problems for achieving precise fixed-order pQCD predictions. The conventional prescription is to take its value as the typical momentum transfer Q in
Externí odkaz:
https://doaj.org/article/38cc7a0f16344867b3f1a8b35ed987ae
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 7, Pp 1-8 (2020)
Abstract The bottom quark forward–backward asymmetry $$A_\mathrm{{FB}}$$ AFB is a key observable in electron–positron collisions at the $$Z^{0}$$ Z0 peak. In this paper, we employ the Principle of Maximum Conformality (PMC) to fix the $$\alpha _s
Externí odkaz:
https://doaj.org/article/c3a9de0b56974f97a8f965ae430600dd
Autor:
Shan Cheng, Jian-Ming Shen
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 6, Pp 1-16 (2020)
Abstract In this paper we calculate the $$\bar{B}_s \rightarrow f_0(980)$$ B¯s→f0(980) form factors from light-cone sum rules with B meson DAs. With adopting the quark–antiquark configuration of light scalar mesons, the high twist two-particle a
Externí odkaz:
https://doaj.org/article/4350cb93e3fd4352a266b441532ffd65