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Photon-tagged heavy meson production in high energy nuclear collisions
High Energy Physics - Phenomenology · Submitted 8 Jun 2011
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We conclude that a comprehensive comparative study of both photon-tagged light and heavy meson production can provide new insights in the details of the jet quenching mechanism.
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The abstract, sentence by sentence
We study the photon-triggered light and heavy meson production in both p+p and A+A collisions. We find that a parton energy loss approach that successfully describes inclusive hadron attenuation in nucleus-nucleus reactions at RHIC can simultaneously describe well the experimentally determined photon-triggered light hadron fragmentation functions. Using the same framework, we generalize our formalism to study photon-triggered heavy meson production. We find that the nuclear modification of photon-tagged heavy meson fragmentation functions in A+A collision is very different from that of the photon-tagged light hadron case. While photon-triggered light hadron fragmentation functions in A+A collisions are suppressed relative to p+p, photon-triggered heavy meson fragmentation functions can be either enhanced or suppressed, depending on the specific kinematic region. The anticipated smaller energy loss for $b$-quarks manifests itself as a flatter photon-triggered $B$-meson fragmentation function compared to that for the $D$-meson case. We make detailed predictions for both RHIC and LHC energies. We conclude that a comprehensive comparative study of both photon-tagged light and heavy meson production can provide new insights in the details of the jet quenching mechanism.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We study the photon-triggered light and heavy meson production in both p+p and A+A collisions. | contribution 0.99 | 0.90 | 0.02 | asserted 0.74 |
| s1 | We find that a parton energy loss approach that successfully describes inclusive hadron attenuation in nucleus-nucleus reactions at RHIC can simultaneously describe well the experimentally determined photon-triggered light hadron fragmentation functions. | result 0.96 | 0.91 | 0.12 | asserted 1.00 |
| s2 | Using the same framework, we generalize our formalism to study photon-triggered heavy meson production. | contribution 0.63 | 0.93 | 0.03 | asserted 0.95 |
| s3 | We find that the nuclear modification of photon-tagged heavy meson fragmentation functions in A+A collision is very different from that of the photon-tagged light hadron case. | result 1.00 | 0.94 | 0.22 | asserted 1.00 |
| s4 | While photon-triggered light hadron fragmentation functions in A+A collisions are suppressed relative to p+p, photon-triggered heavy meson fragmentation functions can be either enhanced or suppressed, depending on the specific kinematic region. | result 1.00 | 0.91 | 0.27 | asserted 0.87 |
| s5 | The anticipated smaller energy loss for $b$-quarks manifests itself as a flatter photon-triggered $B$-meson fragmentation function compared to that for the $D$-meson case. | result 0.70 | 0.86 | 0.06 | asserted 0.94 |
| s6 | We make detailed predictions for both RHIC and LHC energies. | contribution 0.94 | 0.87 | 0.03 | asserted 0.95 |
| s7 | We conclude that a comprehensive comparative study of both photon-tagged light and heavy meson production can provide new insights in the details of the jet quenching mechanism. | interpretation 0.94 | 0.42 | 0.92 | hedged possibility 0.75 |
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The paper
Original abstract
We study the photon-triggered light and heavy meson production in both p+p and A+A collisions. We find that a parton energy loss approach that successfully describes inclusive hadron attenuation in nucleus-nucleus reactions at RHIC can simultaneously describe well the experimentally determined photon-triggered light hadron fragmentation functions. Using the same framework, we generalize our formalism to study photon-triggered heavy meson production. We find that the nuclear modification of photon-tagged heavy meson fragmentation functions in A+A collision is very different from that of the photon-tagged light hadron case. While photon-triggered light hadron fragmentation functions in A+A collisions are suppressed relative to p+p, photon-triggered heavy meson fragmentation functions can be either enhanced or suppressed, depending on the specific kinematic region. The anticipated smaller energy loss for $b$-quarks manifests itself as a flatter photon-triggered $B$-meson fragmentation function compared to that for the $D$-meson case. We make detailed predictions for both RHIC and LHC energies. We conclude that a comprehensive comparative study of both photon-tagged light and heavy meson production can provide new insights in the details of the jet quenching mechanism.
Human review
References
How the literature uses it
8 arXiv papers cite this in 8 sentences
Papers citing it · 4 sentences without a confident label
Cites it as background 4 papers
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where $H_ab→γ$ are the well-known partonic hard-scattering functions for direct photon production [ref] .
Nuclear modification of high transverse momentum particle production in p+A collisions at RHIC and LHC · Basic pQCD formalism · 0.82
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This has stimulated a series of work addressing the interaction of heavy quarks with the QCD medium in the literature, see e.g. [ref] and references therein.
Effective field theory approach to open heavy flavor production in heavy-ion collisions · Introduction · 0.96
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At leading order, the direct contribution is given by E_γdσ^dir/d^3P_γ= α_em α_s/s∑_a,b ∫dx'/x'f_b/B(x') ∫dx/x f_a/A(x) H^U_ab→γ(ŝ,t̂,û)δ(ŝ+t̂+û), where $s=(P_A+P_B)^2$, $f_a/A(x)$ and $f_b/B(x')$ are the spin-averaged parton distribution functions, $ŝ$, $t̂$, and $û$ are the usual Mandelstam variables at the parton level. $H^U_ab→γ$ are the well-known partonic hard-scattering functions for direct photon production [ref] .
Single transverse spin asymmetry of prompt photon production · Unpolarized prompt photon production · 0.94
What it cites · 34 sentences without a confident label
Uses the method or tool of 4 papers
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These energetic jets propagate through the Bjorken expanding medium that follows the number of participants density [ref] .
A light-cone wavefunction approach to open heavy flavor dynamics in QCD matter · Phenomenological studies in p+p and A+A collisions · 0.90
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These energetic jets propagate through the Bjorken expanding medium that follows the number of participants density [ref] .
The physics of $Z^0/\gamma^*$-tagged jets at the LHC · Phenomenological studies in p+p and A+A collisions · 0.90
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In our calculation $P(ϵ)$ is obtained using the GLV formalism for evaluating the medium-induced gluon bremsstrahlung [ref] and the Poisson approximation.
Non-Abelian energy loss in cold nuclear matter · Phenomenological studies in p+p and A+A collisions · 0.99
Uses data or values from 4 papers
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Instead, we employ the differential medium-induced bremsstrahlung distributions and energy loss probabilities $P(ϵ)$ for light partons and heavy quarks obtained in [ref] .
A light-cone wavefunction approach to open heavy flavor dynamics in QCD matter · Phenomenological studies in p+p and A+A collisions · 0.86
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Instead, we employ the differential medium-induced bremsstrahlung distributions and energy loss probabilities $P(ϵ)$ for light partons and heavy quarks obtained in [ref] .
The physics of $Z^0/\gamma^*$-tagged jets at the LHC · Phenomenological studies in p+p and A+A collisions · 0.86
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Data is from PHENIX [ref] .
Photon-Hadron Jet Correlations in p+p and Au+Au Collisions at sqrt(s_NN) = 200 GeV · Comparison to experimental data: $γ$-triggered light hadron production · 0.93
Compares with 2 papers
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In Fig. [ref] (left and top right panels) we show our results compared to both PHENIX [ref] and STAR data [ref] .
Studying Parton Energy Loss in Heavy-Ion Collisions via Direct-Photon and Charged-Particle Azimuthal Correlations · Comparison to experimental data: $γ$-triggered light hadron production · 0.93
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In Fig. [ref] (left and top right panels) we show our results compared to both PHENIX [ref] and STAR data [ref] .
Photon-Hadron Jet Correlations in p+p and Au+Au Collisions at sqrt(s_NN) = 200 GeV · Comparison to experimental data: $γ$-triggered light hadron production · 0.93
Cites as background 8 papers
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Specifically, as they propagate through the QGP, they interact with the medium and lose energy, a phenomenon known as “jet quenching” [ref] .
Multiple Collisions and Induced Gluon Bremsstrahlung in QCD · Introduction · 0.97
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Specifically, as they propagate through the QGP, they interact with the medium and lose energy, a phenomenon known as “jet quenching” [ref] .
An effective theory for jet propagation in dense QCD matter: jet broadening and medium-induced bremsstrahlung · Introduction · 0.97
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Specifically, as they propagate through the QGP, they interact with the medium and lose energy, a phenomenon known as “jet quenching” [ref] .
Multiple Parton Scattering in Nuclei: Parton Energy Loss · Introduction · 0.97
Discussion
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