Analyzing QCD Sum Rules for Heavy Baryons at Next-to-Leading Order in α_S

1997/10/15 by Stefan Groote, S. Groote, Groote, Stefan · 1 citation
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/9710365

9 pages, LaTeX, 4 figures are included in PostScript format, talk given at the IVth International Workshop on Progress in Heavy Quark Physics, Rostock, September 20-22, 1997

arxiv created 1997/10/15 · openalex publication_date 1997/10/15 · arxiv updated 2009/11/30 · openalex created_date 2024/04/10 · openalex updated_date 2026/07/28

Abstract

In this talk I consider QCD sum rules for the ground state heavy baryons to leading order in 1/m_Q and at next-to-leading order in α_S within the context of Heavy Quark Symmetry. The analysis is done at a fixed scale μ=1 GeV. The evolution behaviour of the residues is determined by the two-loop anomalous dimension of the heavy baryon currents calculated earlier. I compare the diagonal, non-diagonal and constituent type QCD sum rules and show that the diagonal sum rules are the most reliable one. As central values for the bound state energies I find m(Λ_Q)-m_Q=760 MeV and m(Σ_Q)-m_Q=940 MeV. The central values for the residues are given by F(Λ_Q)=0.030 GeV³ and F(Σ_Q)=0.038 GeV³.

Cited by

• Radiative decays of P-wave charmed baryons in the SU(3) flavor \bf6_F representation

Related

• Heavy Baryons and QCD Sum Rules
• QCD sum rules for positive and negative parity heavy baryons at next-to-leading order in α_s-expansion
• QCD sum rules as applied to heavy baryons
• QCD Sum Rules for Heavy Flavors
• Modern status of heavy quark sum rules in QCD