Meson-baryon sigma terms in QCD Sum Rules

Details Meson-baryon sigma terms in QCD Sum Rules Meson-baryon sigma terms in QCD Sum Rules

2007-05-28

arxiv.org/abs/0705.4046v2

Phys.Lett.B659:176-183,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 2 figures; extended discussion and added references; version to be published in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2007.11.060

We evaluate the pion-nucleon and the pion-Delta sigma terms by employing the
method of quantum chromodynamics (QCD) sum rules. The obtained value of the
pion-nucleon sigma term is compatible with the larger values already
anticipated by the recent calculations. It is also found that the pion-Delta
sigma term is as large as the pion-nucleon sigma term.

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