Large N_c behavior of light resonances in meson-meson scattering

J. R. Pelaez

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Large N_c behavior of light resonances in meson-meson scattering

J. R. Pelaez

High Energy Physics - Phenomenology · Submitted 20 Oct 2003

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim The scalars sigma, kappa f_0(980) and, possibly, the a_0(980) do not seem to behave as q-qbar states, in contrast to the vectors rho(770) and K*(892).

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What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.24 · human participants 0.01 · controlled comparison 0.09 · randomized assignment 0.01 · states quantitative result 0.05 · compares with prior results 0.41 · mentions code or data availability 0.02.

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arXiv listing abstract v1. Results and the main claim are underlined; show every role.

By scaling the parameters of meson-meson unitarized Chiral Perturbation Theory amplitudes according to the QCD large N_c rules, one can study the spectroscopic nature of light meson resonances. The scalars sigma, kappa f_0(980) and, possibly, the a_0(980) do not seem to behave as q-qbar states, in contrast to the vectors rho(770) and K*(892). The behavior shown by the scalars is naturally explained in terms of diagrams with intermediate $\bar q\bar q qq$-like states. Here we review our recent study and show how the results do not depend on the different fits to data.

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What the classifier reports for each sentence. The number is the probability it gave the label.
#	sentence	role	the authors' own work	states the main conclusion	strength
s0	By scaling the parameters of meson-meson unitarized Chiral Perturbation Theory amplitudes according to the QCD large N_c rules, one can study the spectroscopic nature of light meson resonances.	method 0.87	0.50	0.08	asserted 0.65
s1	The scalars sigma, kappa f_0(980) and, possibly, the a_0(980) do not seem to behave as q-qbar states, in contrast to the vectors rho(770) and K*(892).	result 0.99	0.72	0.70	hedged possibility 0.86
s2	The behavior shown by the scalars is naturally explained in terms of diagrams with intermediate $\bar q\bar q qq$-like states.	interpretation 1.00	0.60	0.24	asserted 0.85
s3	Here we review our recent study and show how the results do not depend on the different fits to data.	contribution 0.93	0.79	0.06	asserted 0.99

What kind of paper the classifier reports this is: review 0.88 · evidence from simulation or computation 0.59.

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Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper

Original abstract

By scaling the parameters of meson-meson unitarized Chiral Perturbation Theory amplitudes according to the QCD large N_c rules, one can study the spectroscopic nature of light meson resonances. The scalars sigma, kappa f_0(980) and, possibly, the a_0(980) do not seem to behave as q-qbar states, in contrast to the vectors rho(770) and K*(892). The behavior shown by the scalars is naturally explained in terms of diagrams with intermediate $\bar q\bar q qq$-like states. Here we review our recent study and show how the results do not depend on the different fits to data.

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Found among the papers closest to this one by title and main claim. Pith's classifier compared each pair's main results and a second model family confirmed the relation; checked against two further families, shown conflicts agreed 118 times in 120 and shown same results 218 times in 239. The quoted sentence is the other paper's main claim.

States the same result 3 papers

This suggests that the main component of light scalars is not qqbar.

Light scalar and vector mesons in the large $N_c$ limit from unitarized chiral perturbation theory · 0.99
In contrast with the rho or K*, the scalar behavior is at odds with a qqbar "dominant component".

Comments on the large Nc behavior of light scalars · 0.99
The vectors follow a qqbar behavior, whereas the sigma, kappa and f_0(980) scalars disappear for large N_c, in support of a qqqbarqbar-like nature.

On the nature of light scalar mesons from their large $N_c$ behavior · 0.90

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