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Why mean $p_{\rm T}$ is interesting
High Energy Physics - Phenomenology · Submitted 20 Oct 2014
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We discuss energy dependence of the interaction radius and argue that since the radius cannot grow too large, a universal behavior of $< p_{\rm T} >$ for large multiplicities is expected.
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The abstract, sentence by sentence
We discuss energy dependence of mean $p_{\rm T}$ correlation with $N_{\rm ch}$ basing on general features of high energy collisions such as saturation and geometrical scaling. We use Color Glass Condensate calculation of an effective interaction radius that scales as a third root of multiplicity, and then saturates. With this model input we construct scaling variable for $< p_{\rm T} > (N_{\rm ch})$ at different energies both for pp and pPb collisions, and show that recent ALICE data indeed does exhibit this scaling property. We discuss energy dependence of the interaction radius and argue that since the radius cannot grow too large, a universal behavior of $< p_{\rm T} >$ for large multiplicities is expected.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We discuss energy dependence of mean $p_{\rm T}$ correlation with $N_{\rm ch}$ basing on general features of high energy collisions such as saturation and geometrical scaling. | contribution 0.84 | 0.73 | 0.09 | asserted 0.56 |
| s1 | We use Color Glass Condensate calculation of an effective interaction radius that scales as a third root of multiplicity, and then saturates. | method 0.99 | 0.72 | 0.06 | asserted 0.98 |
| s2 | With this model input we construct scaling variable for $< p_{\rm T} > (N_{\rm ch})$ at different energies both for pp and pPb collisions, and show that recent ALICE data indeed does exhibit this scaling property. | result 0.73 | 0.94 | 0.65 | asserted 1.00 |
| s3 | We discuss energy dependence of the interaction radius and argue that since the radius cannot grow too large, a universal behavior of $< p_{\rm T} >$ for large multiplicities is expected. | interpretation 0.99 | 0.60 | 0.59 | hedged possibility 0.61 |
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The paper
Original abstract
We discuss energy dependence of mean $p_{\rm T}$ correlation with $N_{\rm ch}$ basing on general features of high energy collisions such as saturation and geometrical scaling. We use Color Glass Condensate calculation of an effective interaction radius that scales as a third root of multiplicity, and then saturates. With this model input we construct scaling variable for $< p_{\rm T} > (N_{\rm ch})$ at different energies both for pp and pPb collisions, and show that recent ALICE data indeed does exhibit this scaling property. We discuss energy dependence of the interaction radius and argue that since the radius cannot grow too large, a universal behavior of $< p_{\rm T} >$ for large multiplicities is expected.
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1 arXiv paper cite this in 1 sentence
What it cites · 15 sentences without a confident label
Builds on 1 paper
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Replacing $Q̅_s(W)$ in Eq. ([ref]) by ([ref]) at fixed $W=W_0$ and adding a constant piece, which takes into account nonperturbative effects and contributions from the particle masses, we arrive at [ref] : [equation] Here $α$ and $β$ are constants that do not depend on energy and $γ$ is a parameter that, using parton-hadron duality assumption, relates number of gluons to the number of charged particles.
Transverse Momentum of Protons, Pions and Kaons in High Multiplicity pp and pA Collisions: Evidence for the Color Glass Condensate? · Introduction · 0.83
Uses data or values from 2 papers
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To obtain plots in Fig. [ref] we have used parametrization of $R(√(N_g))$ at $W_0=7$ TeV from Ref. [ref] .
Transverse Momentum of Protons, Pions and Kaons in High Multiplicity pp and pA Collisions: Evidence for the Color Glass Condensate? · Introduction · 0.95
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On the same plot in Fig. [ref] we also show the CGC calculation of $R(√(γN_ch))/β$ with $γ=1.138$ as extracted from the data in Ref. [ref] (dashed line).
Geometrical Scaling and the Dependence of the Average Transverse Momentum on the Multiplicity and Energy for the ALICE Experiment · Introduction · 0.87
Cites as support 1 paper
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We expect therefore that for large multiplicities interaction radii at different energies should tend to a common limiting value [ref] .
Geometrical Scaling and the Dependence of the Average Transverse Momentum on the Multiplicity and Energy for the ALICE Experiment · Introduction · 0.99
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