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Dobado González, Antonio and Peláez Sagredo, José Ramón
(1992)
*On the large Nf limit of chiral perturbation-theory.*
Physics Letters B, 286
(01/02/2013).
pp. 136-146.
ISSN 0370-2693

Official URL: http://dx.doi.org/10.1016/0370-2693(92)90171-Y

## Abstract

In this letter we show how it is possible to obtain the large N(f) limit of chiral perturbation theory (chi-PT) in the chiral limit. In particular, we compute explicitly the Nambu-Goldstone boson (NGB) elastic scattering amplitude to leading order in 1/N (N being the number of NGB fields) to all powers in the external momenta. This amplitude is unitary to order 1/N and it can incorporate resonant behavior. The price to pay is the introduction of an infinite set of renormalized coupling constants that can be summarized in a single generating function. Playing with these constants, it is possible to simulate the linear sigma model and many others in the same large N limit.

Item Type: | Article |
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Uncontrolled Keywords: | Ymmetry-Breaking Sector, Weak-Interactions, Standard Model, Ww Scattering, Lagrangians, Higgs; Mass, Resonances, Energies, Matrix |

Subjects: | Sciences > Physics |

ID Code: | 22867 |

Deposited On: | 19 Sep 2013 15:22 |

Last Modified: | 12 Nov 2014 13:02 |

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