This title appears in the Scientific Report : 2008 

Role of the Delta(1232) in pion-deuteron scattering at threshold within chiral effective field theory
Baru, V.
Haidenbauer, J. / Hanhart, C. / Kudryavtsev, A. E. / Lensky, V. / Meissner, U.G.
Theorie der starken Wechselwirkung; IKP-3
Jülich-Aachen Research Alliance - Simulation Sciences; JARA-SIM
Physics letters / B, 659 (2008) S. 184 - 191
Amsterdam North-Holland Publ. 2008
184 - 191
Journal Article
Physik der Hadronen und Kerne
Physics Letters B 659
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We investigate the role of the delta isobar in the reaction pi d -> pi d at threshold in chiral effective field theory. We discuss the corresponding power counting and argue that this calculation completes the evaluation of diagrams up to the order chi(3/2), with chi the ratio of the pion to the nucleon mass. The net effect of all delta contributions at this order to the pion-deuteron scattering length is delta a(pi d)(Delta) = (2.4 +/- 0.4) x 10(-3) m(pi)(-1). (C) 2007 Elsevier B.V. All rights reserved.