The Contribution of the Light Quark Condensate to the Pion-Nucleon Sigma Term

Details The Contribution of the Light Quark Condensate to the Pion-Nucleon Sigma Term The Contribution of the Light Quark Condensate to the Pion-Nucleon Sigma Term

2003-05-08

arxiv.org/abs/nucl-th/0305022v1

Mod.Phys.Lett. A18 (2003) 1171-1178

Physics

Nuclear Physics

Nuclear Theory

Modern Physics Letters A (in press)

Scientific paper

10.1142/S0217732303010995

There has been a discrepancy between values of the pion-nucleon sigma term
extracted by two different methods for many years. Analysis of recent high
precision pion-nucleon data has widened the gap between the two determinations.
It is argued that the two extractions correspond to different quantities and
that the difference between them can be understood and calculated.

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