High Energy Physics - Phenomenology · arXiv:hep-ph/0504218 v3 · submitted 25 Apr 2005
Mesons and diquarks in the color neutral 2SC phase of dense cold quark matter
The paper says
“The spectrum of scalar diquarks in the color neutral 2SC phase consists of a heavy ($\rm SU_c(2)$-singlet) resonance with mass ∼ 1100 MeV, four light diquarks with mass 3|μ8|, and one Nambu –Goldstone boson which is in accordance with the Goldstone theorem.”
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The paper
Abstract
The spectrum of meson and diquark excitations of dense color neutral cold quark matter is investigated in the framework of a 2-flavored Nambu–Jona-Lasinio type model, including a quark μ- and color μ8 chemical potential. It was found out that in the color superconducting (2SC) phase, i.e. at μ > μc = 342 MeV, μ8 aquires rather small values ∼ 10 MeV in order to ensure the color neutrality. In this phase the π- and σ meson masses are evaluated around ∼ 330 MeV. The spectrum of scalar diquarks in the color neutral 2SC phase consists of a heavy ($\rm SU_c(2)$-singlet) resonance with mass ∼ 1100 MeV, four light diquarks with mass 3|μ8|, and one Nambu –Goldstone boson which is in accordance with the Goldstone theorem. Moreover, in the 2SC phase there are five light stable particles as well as a heavy resonance in the spectrum of pseudo-scalar diquarks. In the color symmetric phase, i.e. for μ < μc, a mass splitting of scalar diquarks and antidiquarks is shown to arise if μ ≠ 0, contrary to the case of μ = 0, where the masses of scalar antidiquarks and diquarks are degenerate at the value ∼ 700 MeV. If the coupling strength in the pseudo-scalar diquark channel is the same as in the scalar diquark one (as for QCD-inspired NJL models), then in the color symmetric phase pseudo-scalar diquarks are not allowed to exist as stable particles.
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abstract compiled · 2026-09-23 · no language-model review
How the main claim is stated: asserted 1.00
What the abstract itself states, as probabilities: claims first 0.02 · states limitation 0.16 · human participants 0.01 · controlled comparison 0.20 · randomized assignment 0.01 · states quantitative result 0.99 · compares with prior results 0.21 · mentions code or data availability 0.02
The abstract, sentence by sentence
This table labels the abstract only (arXiv listing abstract v3). The number is the probability the classifier gave the label.
| Sentence | Role | The authors' own work | States the main conclusion | Strength |
|---|---|---|---|---|
| The spectrum of meson and diquark excitations of dense color neutral cold quark matter is investigated in the framework of a 2-flavored Nambu--Jona-Lasinio type model, including a quark $\mu$- and color $\mu_8$ chemical potential. | contribution 0.82 | 0.86 | 0.05 | asserted 0.90 |
| It was found out that in the color superconducting (2SC) phase, i.e. at $\mu>\mu_c=342$ MeV, $\mu_8$ aquires rather small values $\sim$ 10 MeV in order to ensure the color neutrality. | result 1.00 | 0.91 | 0.15 | asserted 1.00 |
| In this phase the $\pi$- and $\sigma$ meson masses are evaluated around $\sim$ 330 MeV. | result 1.00 | 0.90 | 0.09 | asserted 0.99 |
| The spectrum of scalar diquarks in the color neutral 2SC phase consists of a heavy ($\rm SU_c(2)$-singlet) resonance with mass $\sim$ 1100 MeV, four light diquarks with mass $3|\mu_8|$, and one Nambu --Goldstone boson which is in accordance with the Goldstone theorem. | result 1.00 | 0.90 | 0.27 | asserted 1.00 |
| Moreover, in the 2SC phase there are five light stable particles as well as a heavy resonance in the spectrum of pseudo-scalar diquarks. | result 1.00 | 0.90 | 0.15 | asserted 1.00 |
| In the color symmetric phase, i.e. for $\mu <\mu_c$, a mass splitting of scalar diquarks and antidiquarks is shown to arise if $\mu\ne 0$, contrary to the case of $\mu = 0$, where the masses of scalar antidiquarks and diquarks are degenerate at the value $\sim$~700 MeV. | result 1.00 | 0.88 | 0.09 | asserted 1.00 |
| If the coupling strength in the pseudo-scalar diquark channel is the same as in the scalar diquark one (as for QCD-inspired NJL models), then in the color symmetric phase pseudo-scalar diquarks are not allowed to exist as stable particles. | result 0.97 | 0.76 | 0.09 | asserted 0.96 |
What kind of paper the classifier reports this is: theoretical result 0.98 · evidence from proof or derivation 0.60
What was examined, and what was not
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- arXiv listing abstract v3
Not examined
- full text
- figures and tables
- references and citing sentences
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- P abstract
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How the labels were made
Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 6,152 input tokens, $0.0003 reported.
Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. This record as JSON
How the literature uses it
2 arXiv papers cite this in 11 sentences
Papers whose main result relates to this one's
States a conflicting result 1 paper
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Moreover, we have found in this phase an abnormal number of three, instead of five, Nambu--Goldstone bosons, together with a color doublet of light stable diquark modes and a color-singlet heavy diquark resonance with the mass $\sim$ 1100 MeV.
Pion, sigma-meson and diquarks in the 2SC phase of dense cold quark matter · 0.85
Papers citing it · 6 sentences without a confident label
Compares with it 1 paper
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Solving ([ref]), the diquark mass for vanishing magnetic fields is then given by [equation] The qualitative behavior of $Δ_0$ as a function of $μ$ coincides with the results from [ref] .
Color neutral 2SC phase of cold and dense quark matter in the presence of constant magnetic fields · Zero magnetic field · 0.98
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