<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hi all,<div class=""><br class=""></div><div class="">there is no seminar on Monday Oct 8 (Columbus Day in the US except JLab). </div><div class="">On Wednesday Oct 10 1pm, there will be a cake seminar by José Goity. </div><div class=""><br class=""></div><div class="">Title: BChPT x 1/Nc: a consistent approach to baryon chiral dynamics<br class=""><br class="">Abstract: BChPT has been notoriously problematic in describing basic <br class="">properties of baryons, especially in SU(3). The problems are related to <br class="">large NLO and NNLO corrections. Those problems were identified to be the <br class="">result of the failure of implement consistency with the 1/Nc expansion <br class="">of QCD into the EFT. It will be shown that by implementing that <br class="">consistency the chiral expansion shows dramatically improved <br class="">convergence. The mechanism that leads to such improvements will be <br class="">explained and applied to the especially challenging case of SU(3) <br class="">baryons. The applications will include mass relations, sigma terms of <br class="">the nucleon, SU(3) breaking of the vector current charges and axial <br class="">couplings. Quark mass dependencies using results from lattice QCD will <br class="">provide useful testing for the approach.</div><div class=""><br class=""></div><div class="">Cheers,</div><div class="">Vincent</div><div class=""><br class=""></div><div class=""><div class="">
<div class="">----------------------------------------------------</div><div class=""><div class="">Vincent Mathieu</div><div class="">Jefferson Lab Research Fellow</div><div class=""><a href="mailto:vmathieu@jlab.org" class="">vmathieu@jlab.org</a></div><div class=""><br class=""></div><div class="">Joint Physics Analysis Center:</div><div class=""><a href="http://www.indiana.edu/~jpac/index.html" class="">http://www.indiana.edu/~jpac/index.html</a></div><div class="">-----------------------------------------------------</div></div>
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