Jun 13 – 17, 2011
Künstlerhaus
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
20m
Club 3 (Künstlerhaus)

Club 3

Künstlerhaus

talk Low-Energy Processes Low-Energy Processes

Speaker

Mr Jose Manuel Alarcón (Universidad de Murcia)

Description

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)

Co-authors

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

Presentation materials

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