Braun, Vladimir M. and Ivanov, Dmitri Yu. and Lenz, Alexander and Peters, Andreas (2009) Exclusive production of soft pions in DIS. Modern Physics Letters A 24 (35-37), pp. 2931-2937.
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We consider pion electroproduction close to threshold for Q2 in the region 1–10 GeV2 on a nucleon target. The momentum transfer dependence of the S-wave multipoles at threshold, E0+ and L0+, is calculated in the chiral limit using light-cone sum rules. Predictions for the cross sections in the threshold region, both for π0p and π+n channels, are given that include P-wave contributions that, as we argue, are model independent to a large extent. The results are compared with the SLAC E136 data on the structure function F2(W,Q2) in the threshold region.
|Institutions:||Physics > Institute of Theroretical Physics > Chair Professor Braun > Group Vladimir Braun|
|Keywords:||QCD, chiral symmetry; electroproduction|
|Subjects:||500 Science > 530 Physics|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||15 Mar 2010 13:08|
|Last Modified:||15 Mar 2010 13:08|