High Energy Physics - Phenomenology · arXiv:hep-ph/0507035 v2 · submitted 4 Jul 2005
Charmonium's K2 peak
The paper says
“We argue that it displaces the psi(4415) as the (largely) 4s vector charmonium state, recall s-d wave interference to explain the lack of a signal in e-e+ to hadrons and suggest some further study avenues that can exclude exotic meson assignments.”
from the abstract · picked out as the main claim by a classifier
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The paper
Abstract
The newly reported Y(4260) becomes the second most massive state in the charmonium family. We argue that it displaces the psi(4415) as the (largely) 4s vector charmonium state, recall s-d wave interference to explain the lack of a signal in e-e+ to hadrons and suggest some further study avenues that can exclude exotic meson assignments. The absence of a J/psi KK mode can be understood, beyond phase space suppression, to be a consequence of chiral symmetry. We also provide a model calculation in this sector showing that, although forcing the fit somewhat (which suggests a small sea quark wavefunction component), the state can be incorporated in a standard scheme.
The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. No sentence in this record was written by a model.
abstract compiled · 2026-09-23 · no language-model review
How the main claim is stated: hedged possibility 0.38
What the abstract itself states, as probabilities: claims first 0.05 · states limitation 0.91 · human participants 0.01 · controlled comparison 0.05 · randomized assignment 0.01 · states quantitative result 0.30 · compares with prior results 0.79 · mentions code or data availability 0.02
The abstract, sentence by sentence
This table labels the abstract only (arXiv listing abstract v2). The number is the probability the classifier gave the label.
| Sentence | Role | The authors' own work | States the main conclusion | Strength |
|---|---|---|---|---|
| The newly reported Y(4260) becomes the second most massive state in the charmonium family. | result 0.42 | 0.11 | 0.34 | asserted 1.00 |
| We argue that it displaces the psi(4415) as the (largely) 4s vector charmonium state, recall s-d wave interference to explain the lack of a signal in e-e+ to hadrons and suggest some further study avenues that can exclude exotic meson assignments. | interpretation 0.86 | 0.60 | 0.67 | hedged possibility 0.38 |
| The absence of a J/psi KK mode can be understood, beyond phase space suppression, to be a consequence of chiral symmetry. | interpretation 0.97 | 0.43 | 0.08 | asserted 0.64 |
| We also provide a model calculation in this sector showing that, although forcing the fit somewhat (which suggests a small sea quark wavefunction component), the state can be incorporated in a standard scheme. | contribution 0.43 | 0.93 | 0.10 | hedged possibility 0.65 |
What kind of paper the classifier reports this is: position or commentary 0.88 · evidence from argument 0.87
What was examined, and what was not
Sources read
- arXiv listing abstract v2
Not examined
- full text
- figures and tables
- references and citing sentences
- relations to other papers
Levels run
- P abstract
Not run
- S sections
- T body sentences
- C citations
- R cross-paper relations
How the labels were made
Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 3,685 input tokens, $0.0002 reported.
Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. This record as JSON
Cited by 5 Pith papers
Reviewed papers on Pith that cite this one. The full citation record
- Suppressed decay into open charm for the Y(4260) being an hybrid hep-ph · Jul 2005
- Vector charmonium(-like) states in the energy range of 4.1-4.6 GeV hep-ph · Jun 2026
- Are Y(4260) and {\rm Z$_2^{+}$(4250)} ${\rm D_1D}$ or ${\rm D_0D^{*}}$ Hadronic Molecules? hep-ph · Sep 2008
- Exotic Hadrons with Heavy Flavors -X, Y, Z and Related States- hep-ph · Mar 2016
- An overview of $XYZ$ new particles hep-ph · Dec 2013
How the literature uses it
12 arXiv papers cite this in 15 sentences
Papers citing it · 7 sentences without a confident label
Cites it as background 7 papers
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For example, Llanes-Estrada claims that it is dominantly $ψ(4S)$ in the relativistic quark model [ref] , and in order to explain the small cross section in the $e^+e^-$ collider, an $S-D$ mixing mechanism is also introduced.
$X(4260)$ Revisited: A Coupled Channel Perspective · Introduction · 0.83
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It has variously been identified as a conventional $ψ(4S)$ based on a relativistic quark model [ref] , a tetraquark $cc̅ss̅$ state [ref] which decays predominantly into $D_sD_s$, or a charmonium hybrid [ref] .
Are Y(4260) and {\rm Z$_2^{+}$(4250)} ${\rm D_1D}$ or ${\rm D_0D^{*}}$ Hadronic Molecules? · introduction · 0.97
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On the theoretical side [ref] , a variety of model explanations have been suggested, such as a standard vector charmonium state ($4S$) [ref] , a mesonic or baryonic molecule [ref] , a gluonic excitation (hybrid) [ref] , or a $cqc̅q̅$ state [ref] .
Interference effects in the X(4260) signal · Introduction · 0.99
Challenges and discussion
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