Impacto
Downloads
Downloads per month over past year
Nebreda Manjón, Jenifer and Carrasco, J. A. and Londergan, J. T. and Peláez Sagredo, José Ramón and Szczepaniak, Adam P. (2016) Regge trajectories of ordinary and nonordinary mesons from their scattering poles. In XIth Conference on Quark Confinement and Hadron Spectrum. AIP Conference Proceedings (1701). American Institute of Physics AIP. ISBN 9780735413481

PDF
506kB 
Official URL: http://dx.doi.org/10.1063/1.4938632
URL  URL Type 

http://scitation.aip.org/  Publisher 
http://arxiv.org/abs/1412.5894#  Organisation 
Abstract
Our results on obtaining the Regge trajectory of a resonance from its pole in a scattering process and from analytic constraints in the complex angular momentum plane are presented. The method, suited for resonances that dominate an elastic scattering amplitude, has been applied to the ρ(770), ƒ_2(1270), ƒ_2(1525) and ƒ_0(500) resonances. Whereas for the first three we obtain linear Regge trajectories, characteristic of ordinary quarkantiquark states, for the latter we find a nonlinear trajectory with a much smaller slope at the resonance mass. We also show that if a linear trajectory with a slope of typical size is imposed for the ƒ_0(500), the corresponding amplitude is at odds with the data. This provides a strong indication of the nonordinary nature of the sigma meson.
Item Type:  Book Section 

Additional Information:  © 2016 AIP Publishing LLC. 
Uncontrolled Keywords:  Regge Theory; Light scalar mesons. 
Subjects:  Sciences > Physics > PhysicsMathematical models Sciences > Physics > Mathematical physics 
ID Code:  37094 
Deposited On:  13 Apr 2016 18:31 
Last Modified:  10 Dec 2018 15:09 
Origin of downloads
Repository Staff Only: item control page