Pion-nucleon charge-exchange scattering and the crossover phenomenon with M=0 ρ and M=1 ρ' trajectories

Chu, Shu-Yuan ; Desai, Bipin R. ; Roy, D. P. (1969) Pion-nucleon charge-exchange scattering and the crossover phenomenon with M=0 ρ and M=1 ρ' trajectories Physical Review, 187 (5). pp. 1896-1898. ISSN 0031-899X

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Official URL: http://prola.aps.org/abstract/PR/v187/i5/p1896_1

Related URL: http://dx.doi.org/10.1103/PhysRev.187.1896

Abstract

A Regge-pole model with (M=0) ρ and (M=1) ρ' trajectories is used to fit the πN charge-exchange differential cross-section and polarization data. The model automatically predicts the crossover phenomenon around t=-0.2 GeV2 in πN elastic scattering without assuming any zeros in the nonflip ρ residue. Thus it avoids difficulties of such zeros due to factorization. The parameters of the ρ and ρ' are consistent with the nucleon electromagnetic form factors and predict the mass of ρ' to be around 1.1 GeV.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:42812
Deposited On:06 Jun 2011 13:02
Last Modified:06 Jun 2011 13:02

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