Jun 13 – 17, 2011
Europe/Berlin timezone
Proceedings are now available online at <a href="http://www.slac.stanford.edu/econf/C110613/">eConf</a>

πN scattering in relativistic baryon chiral perturbation theory revisited

Jun 14, 2011, 2:55 PM
Club 3 (Künstlerhaus)

Club 3


talk Low-Energy Processes Low-Energy Processes


Mr Jose Manuel Alarcón (Universidad de Murcia)


We have analyzed pion-nucleon scattering using the manifestly relativistic covariant framework of Infrared Regularization up to {\cal O}(q^3) in the chiral expansion, where q is a generic small momentum. We describe the low-energy phase shifts with a similar quality as previously achieved with Heavy Baryon Chiral Perturbation Theory, \sqrt{s}\lesssim 1.14 GeV. New values are provided for the {\cal O}(q^2) and {\cal O}(q^3) low-energy constants, which are compared with previous determinations. This is also the case for the scattering lengths and volumes. Finally, we have unitarized the previous amplitudes and as a result the energy range where data are reproduced increases significantly.

Primary authors

Dr Jorge Martin Camalich (University of Sussex) Mr Jose Manuel Alarcón (Universidad de Murcia)


Dr Jose Antonio Oller (Universidad de Murcia) Dr Luis Alvarez Ruso (Universidad de Valencia-CSIC)

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