Zobrazeno 1 - 10
of 445
pro vyhledávání: '"Narison Stephan"'
Autor:
Narison, Stephan
1. I update my previous comparison of the theoretical value of the muon anomaly with the new measurement and found $\Delta a_\mu\equiv a_\mu^{exp}-a_\mu^{th} = (143\pm 42_{th}\pm 22_{exp})\times 10^{-11}$ which is about 3$\sigma$ discrepancy between
Externí odkaz:
http://arxiv.org/abs/2402.13983
Autor:
Narison, Stephan
In this talk, I summarize the results obtained recently in Ref.\,\cite{SNe} using the PDG 22 compilation of the $e^+e^-\to$ Hadrons $\oplus$ the recent CMD3 data for the pion form factor. Using the gluon condensate $\langle \alpha_s G^2\rangle=(6.49\
Externí odkaz:
http://arxiv.org/abs/2309.05342
Autor:
Narison, Stephan
We shortly review some applications of the (inverse) Laplace (LSR) transform sum rules in Quantum ChromoDynamics (QCD) for extracting the fundamental QCD parameters (coupling constant $\alpha_s$, quark and gluon condensates) and the hadron properties
Externí odkaz:
http://arxiv.org/abs/2309.00258
Autor:
Narison, Stephan
Publikováno v:
Nuclear Physics A1039 (2023) 122744
Using the PDG 22 compilation of the $e^+e^-\to$ Hadrons $\oplus$ the recent CMD3 data for the pion form factor and the value of gluon condensate $<\alpha_s G^2>$ from heavy quarkonia, we extract the value of the four-quark condensate : $\rho\alpha_s<
Externí odkaz:
http://arxiv.org/abs/2306.14639
Autor:
Narison, Stephan
We present a compact review of the status of QCD spectral sum rules until 2022. We emphasize the recent progresses for determining the QCD input parameters ($\alpha_s$, running quark masses, quark and gluon condensates) where their correlations have
Externí odkaz:
http://arxiv.org/abs/2211.14536
Autor:
Narison, Stephan
We discuss the topics mentioned in the title by scrutinizing and improving the $0^{-+}$ di-gluonia sum rules within the standard SVZ-expansion at N2LO without instantons. First, we reconsider the estimate of the slope of the topological charge $\chi'
Externí odkaz:
http://arxiv.org/abs/2111.02873
We revisit, scrutinize, improve, confirm and complete our previous results [1-3] from the scalar di-gluonium sum rules within the standard SVZ-expansion at N2LO without instantons and beyond the minimal duality ansatz : "one resonance + QCD continuum
Externí odkaz:
http://arxiv.org/abs/2108.13089
Autor:
Narison, Stephan
Publikováno v:
In Nuclear and Particle Physics Proceedings April 2024 343:104-112
Autor:
Narison, Stephan
We briefly report the modern status of heavy quark sum rules (HQSR) based on stability criteria by emphasizing the recent progresses for determining the QCD parameters (alpha_s, m_{c,b} and gluon condensates)where their correlations have been taken i
Externí odkaz:
http://arxiv.org/abs/2101.12579