Nuclear modification of high-p_T hadron spectra in p+A collisions at LHC

Rong Xu (CCNU); Wei-Tian Deng (FIAS); Xin-Nian Wang (CCNU/LBNL)

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Nuclear modification of high-p_T hadron spectra in p+A collisions at LHC

Rong Xu (CCNU), Wei-Tian Deng (FIAS), Xin-Nian Wang (CCNU/LBNL)

Nuclear Theory · Submitted 9 Apr 2012

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

The authors' main claim They are shown to modify the partonic flavor content of final jets and momentum spectra of final hadrons in p+A collisions at the Large Hadron Collider.

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arXiv ID1204.1998 (version 3)

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CitationRong Xu (CCNU), Wei-Tian Deng (FIAS), Xin-Nian Wang (CCNU/LBNL). "Nuclear modification of high-p_T hadron spectra in p+A collisions at LHC." arXiv:1204.1998 (2012). https://pith.science/paper/FAP7T3NT

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Multiple parton scatterings in high-energy p+A collisions involve multi-parton correlation inside the projectile and color coherence of multiple jets which will lead to nuclear modification of final hadron spectra relative to that in p+p collisions. Such modification of final hadron spectra in p+A collisions is studied within HIJING 2.1 model which includes initial parton shadowing, transverse momentum broadening, parton flavor and momentum correlation inside the projectile through flavor and momentum conservation and fragmentation of multiple jets. They are shown to modify the partonic flavor content of final jets and momentum spectra of final hadrons in p+A collisions at the Large Hadron Collider.

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#	sentence	role	the authors' own work	states the main conclusion	strength
s0	Multiple parton scatterings in high-energy p+A collisions involve multi-parton correlation inside the projectile and color coherence of multiple jets which will lead to nuclear modification of final hadron spectra relative to that in p+p collisions.	background 0.99	0.10	0.40	hedged possibility 0.56
s1	Such modification of final hadron spectra in p+A collisions is studied within HIJING 2.1 model which includes initial parton shadowing, transverse momentum broadening, parton flavor and momentum correlation inside the projectile through flavor and momentum conservation and fragmentation of multiple jets.	method 0.93	0.70	0.10	asserted 1.00
s2	They are shown to modify the partonic flavor content of final jets and momentum spectra of final hadrons in p+A collisions at the Large Hadron Collider.	result 0.99	0.79	0.62	asserted 1.00

What kind of paper the classifier reports this is: simulation study 1.00 · evidence from simulation or computation 1.00.

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Original abstract

Multiple parton scatterings in high-energy p+A collisions involve multi-parton correlation inside the projectile and color coherence of multiple jets which will lead to nuclear modification of final hadron spectra relative to that in p+p collisions. Such modification of final hadron spectra in p+A collisions is studied within HIJING 2.1 model which includes initial parton shadowing, transverse momentum broadening, parton flavor and momentum correlation inside the projectile through flavor and momentum conservation and fragmentation of multiple jets. They are shown to modify the partonic flavor content of final jets and momentum spectra of final hadrons in p+A collisions at the Large Hadron Collider.

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References

Forward citations

Cited by 12 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

Transverse momentum distribution and nuclear modification factor of charged particles in p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV
nucl-ex 2012-10 accept novelty 7.0 of 10

Charged-particle yields in p-Pb collisions at 5.02 TeV match the proton-proton expectation above 2 GeV/c, so the high-momentum suppression seen in Pb-Pb is a final-state, not initial-state, effect.
Centrality and pseudorapidity dependence of the charged-particle multiplicity density in Xe-Xe collisions at $\sqrt{s_{\rm NN}}$ = 5.44 TeV
nucl-ex 2018-05 accept novelty 6.0 of 10

Xenon-xenon collisions at 5.44 TeV follow the energy and centrality trends set by lead-lead, except in the most central 5%, where the multiplicity per participant pair runs above lead-lead at matched participant number.
Centrality dependence of particle production in p-Pb collisions at $\sqrt{s_{\rm NN} }$= 5.02 TeV
nucl-ex 2014-12 conditional novelty 6.0 of 10

Multiplicity-based centrality in p-Pb collisions introduces a dynamical bias on hard-process yields, and a zero-degree-calorimeter-based event selection avoids it, yielding approximate Npart scaling of mid-rapidity pa...
Pseudorapidity density of charged particles in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV
nucl-ex 2012-10 accept novelty 6.0 of 10

In proton-lead collisions at 5.02 TeV, ALICE measures 16.81 +/- 0.71 charged particles per unit pseudorapidity at midrapidity, 16% below NSD proton-proton and 84% above d-Au at 0.2 TeV.
Impact-parameter dependent nuclear parton distribution functions: EPS09s and EKS98s and their applications in nuclear hard processes
hep-ph 2012-05 conditional novelty 6.0 of 10

A four-term fit in nuclear thickness converts the measured mass-number dependence of averaged nuclear PDFs into an impact-parameter-dependent profile, released as EPS09s and EKS98s and applied to centrality-dependent ...

Show 7 more citing papers

Hydrodynamic Collectivity in Proton--Proton Collisions at 13 TeV
nucl-th 2017-12 conditional novelty 5.0 of 10

Hydrodynamics with HIJING initial conditions describes two-particle flow in 13 TeV proton-proton collisions but yields positive c2{4}, opposite to the measured negative value, because HIJING's eccentricity fluctuation...
Study of the production of charged pions, kaons, and protons in pPb collisions at sqrt(sNN) = 5.02 TeV
hep-ex 2013-07 accept novelty 5.0 of 10

Identified pion, kaon, and proton spectra in pPb collisions at 5.02 TeV show average transverse momentum rising with particle mass and with event multiplicity, a pattern matched by EPOS LHC but not by HIJING or AMPT.
Transverse momentum dependence of inclusive primary charged-particle production in p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV
nucl-ex 2014-05 accept novelty 4.0 of 10

Charged-particle production in minimum-bias p-Pb collisions at 5.02 TeV is consistent with binary-collision scaling of the pp cross section up to 50 GeV/c, with only a weak, barely significant excess near 4 GeV/c.
CGC predictions for p+A collisions at the LHC and signature of QCD saturation
hep-ph 2012-10 conditional novelty 4.0 of 10

Within the CGC/saturation framework, the paper predicts hadron and photon nuclear modification factors for 5 TeV proton-lead collisions, shows the dominant uncertainty is the initial nuclear saturation scale, and prop...
Predictions for $p+$Pb Collisions at sqrt s_NN = 5 TeV
hep-ph 2013-01 conditional novelty 3.0 of 10

A multi-model compilation of predictions for p+Pb collisions at 5 TeV, compared against the first ALICE test-run data, showing that no single model reproduces both the charged-particle multiplicity and the nuclear mod...
QCD and strongly coupled gauge theories: challenges and perspectives
hep-ph 2014-04 accept novelty 2.0 of 10

A large multi-author survey of quantum chromodynamics and strongly coupled gauge theories that catalogues the field's established results, open problems, and planned experiments as of early 2014, without reporting a n...
Gluon saturation and initial conditions for relativistic heavy ion collisions
hep-ph 2014-01 accept novelty 2.0 of 10

The review argues that a single saturation-based framework consistently describes small-x data from electron-proton through nucleus-nucleus collisions and supplies the initial conditions for hydrodynamic models of the...

How the literature uses it

21 arXiv papers cite this in 31 sentences

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Builds on it 1 paper

We also extropolate our calculation to LHC energy and give the prediction of $dN_ch/dη$ for $p+Pb$ at $√(s)=4.4$ TeV [ref] .

Suppression of high $p_T$ hadron spectra in $p+A$ collisions · Introduction · 0.91

Uses its method or tool 4 papers

We will first use HIJING Monte Carlo model [ref] to study the intrinsic dihadron correlations in p+p and A+A collisions from minijets without final state interaction.

Relics of Minijets amid Anisotropic Flows in High-energy Heavy-ion Collisions · Introduction · 1.00
The HIJING 2.1 generator [ref] is employed to estimate the systematic uncertainty (Section [ref]).

Production of muons from heavy-flavour hadron decays in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV · Analysis strategy · 1.00
Examples employed here include $𝙷𝙸𝙹𝙸𝙽𝙶$ [ref] , $𝙷𝙸𝙹𝙸𝙽𝙶𝙱𝙱$ [ref] and $𝙰𝙼𝙿𝚃$ [ref] .

Predictions for $p+$Pb Collisions at $\sqrt{s_{NN}} = 5$ TeV: Comparison with Data · Charged particles · 0.96

Compares with it 4 papers

A comparison of the model calculations with the data shows that most of the models that include shadowing [ref] or saturation [ref] predict the measured multiplicity values to within 20% (see also Tab. [ref]).

Pseudorapidity density of charged particles in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV · Introduction · 1.00
Phenomenological models like HIJING [ref] , EPOS LHC [ref] and EPOS 3 [ref] reproduce the data better for the Pb-going side than for the proton-going side.

ALICE results on system-size dependence of charged-particle multiplicity density in p-Pb, Pb-Pb and Xe-Xe collisions · Results and discussion · 0.96
The prediction from the HIJING 2.1 model [ref] describes, with shadowing, the trend seen in the data, although it seems that, with the present shadowing parameter $s_g$, the model underpredicts the data.

Transverse momentum distribution and nuclear modification factor of charged particles in p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV · Introduction · 0.94

Cites it as background 3 papers

The two-component models [ref] combine perturbative QCD processes with soft interactions, and include nuclear modification of the initial parton distributions.

Pseudorapidity density of charged particles in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV · Introduction · 0.88
Among these effects, an important role is played by transverse momentum ($k_T$) broadening of initial- and final-state partons [ref] , and by the modification of the parton distributions functions in bound nucleons compared to those of free nucleons, leading in particular to a reduction of parton densities (shadowing) at small parton fractional momentum $x$ [ref] .

Inclusive photon production at forward rapidities in pp and p$-$Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV · Introduction · 0.98
There are also calculations and predictions for the nuclear modification factor in Monte Carlo models such as HIJING [ref] .

Nuclear modification of high transverse momentum particle production in p+A collisions at RHIC and LHC · Introduction · 0.94

What it cites · 1 sentence without a confident label

Compares with 2 papers

The final hadron spectra at large $p_T$ are however significantly suppressed due to the Lund string fragmentation of multiple parton systems (solid and dashed curves in the lower panel) leaving no room for additional suppression by jet quenching as compared to experimental data from ALICE [ref] and CMS [ref] .

Suppression of charged particle production at large transverse momentum in central Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 2.76$ TeV · Introduction · 0.96
Shown in Fig. [ref] are HIJING 2.1 results on rapidity distributions of charged hadrons in minimum-biased $d+Au$ (upper panel) and $p+Pb$ (lower panel) collisions (solid) at $√(s)_NN=200$ GeV and 5.0 TeV, respectively, as compared to $d+Au$ data from the STAR experiment [ref] .

Charged particle distributions and nuclear modification at high rapidities in d+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV · Introduction · 0.96

Cites as support 4 papers

Recent studies show that multiple parton scatterings inside a quark-gluon plasma can in fact change the the color flow of the jet parton shower from that in vacuum [ref] .

Decoherence and energy loss in QCD cascades in nuclear collisions · Introduction · 0.97
Recent studies show that multiple parton scatterings inside a quark-gluon plasma can in fact change the the color flow of the jet parton shower from that in vacuum [ref] .

Antiangular Ordering of Gluon Radiation in QCD Media · Introduction · 0.97
Recent studies show that multiple parton scatterings inside a quark-gluon plasma can in fact change the the color flow of the jet parton shower from that in vacuum [ref] .

Interference effects in medium-induced gluon radiation · Introduction · 0.97

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