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Lowest resonance in QCD from low-energy data

Autor
Ametller, L.; Talavera, P.
Tipus d'activitat
Article en revista
Revista
Physical review. D, Particles, fields, gravitation, and cosmology
Data de publicació
2014-05-12
Volum
9
Número
89
Pàgina inicial
096004-1
Pàgina final
096004-8
DOI
https://doi.org/10.1103/PhysRevD.89.096004 Obrir en finestra nova
Repositori
http://hdl.handle.net/2117/23029 Obrir en finestra nova
URL
http://link.aps.org/doi/10.1103/PhysRevD.89.096004 Obrir en finestra nova
Resum
We worked out a generalization of su(2) chiral perturbation theory, including a perturbative singlet scalar field. The approach suggests that the prediction for sensible low-energy observables converge faster towards their physical value. The physical mass and width of the scalar particle are obtained through a simultaneous analysis of the pion vector form factor and the ¿¿¿p 0 p 0 cross section. Both values are statistically consistent with the ones obtained by using Roy equations in p-p s...
Citació
Ametller, L.; Talavera, P. Lowest resonance in QCD from low-energy data. "Physical review. D, Particles, fields, gravitation, and cosmology", 12 Maig 2014, vol. 9, núm. 89, p. 096004-1-096004-8.
Paraules clau
QCD low-energy scalar resonance
Grup de recerca
GAA - Grup d'Astronomia i Astrofísica
SC-SIMBIO - Sistemes complexos. Simulació discreta de materials i de sistemes biològics

Participants

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