RECORD
Probing gluon TMDs with reconstructed and tagged heavy flavor hadron pairs at EIC
High Energy Physics - Phenomenology · Submitted 16 Oct 2022
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim This study opens up heavy flavor hadron pair measurements as an attractive channel to access gluon TMD at the EIC.
The compiled record
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. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.
Open the compiled record
The abstract, sentence by sentence
Study of the transverse structure of the proton is one of the major physics goals of the upcoming Electron Ion Collider (EIC). The gluon transverse momentum dependent distributions (TMD) form an essential focus of this effort and are important towards understanding the angular momentum contribution to proton spin as well as QCD factorization. However, very limited experimental constraints on the gluon TMD exist currently. As the heavy quark production in lepton-nucleon DIS gets a dominant contribution from the photon-gluon-fusion process, heavy quark production makes an attractive tool to probe gluon distributions in nucleons. In this paper we present a study of heavy flavor hadron pair reconstruction at a future EIC detector with MAPS based inner tracking and vertexing subsystems to constrain gluon TMD. We utilize the excellent track pointing resolution provided by the detector to exclusively reconstruct heavy flavor hadron pairs via their hadronic decay channels and also to develop a heavy flavor hadron tagging algorithm. Statistical uncertainty projections on azimuthal asymmetries corresponding to gluon TMD at the EIC is evaluated. The heavy flavor tagging is found to substantially enhance the purity of heavy flavor hadron pair selection, and the statistical precision of the measurement compared to that from exclusive reconstruction. The correlation between the azimuthal angle of the transverse momentum of the gluon initiating the process and that of the corresponding heavy flavor hadron pair was also studied and found to be well correlated. This study opens up heavy flavor hadron pair measurements as an attractive channel to access gluon TMD at the EIC.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | Study of the transverse structure of the proton is one of the major physics goals of the upcoming Electron Ion Collider (EIC). | background 1.00 | 0.04 | 0.02 | asserted 1.00 |
| s1 | The gluon transverse momentum dependent distributions (TMD) form an essential focus of this effort and are important towards understanding the angular momentum contribution to proton spin as well as QCD factorization. | background 1.00 | 0.04 | 0.03 | asserted 1.00 |
| s2 | However, very limited experimental constraints on the gluon TMD exist currently. | gap 1.00 | 0.04 | 0.02 | asserted 1.00 |
| s3 | As the heavy quark production in lepton-nucleon DIS gets a dominant contribution from the photon-gluon-fusion process, heavy quark production makes an attractive tool to probe gluon distributions in nucleons. | background 0.99 | 0.05 | 0.03 | asserted 0.95 |
| s4 | In this paper we present a study of heavy flavor hadron pair reconstruction at a future EIC detector with MAPS based inner tracking and vertexing subsystems to constrain gluon TMD. | contribution 0.98 | 0.90 | 0.06 | asserted 0.99 |
| s5 | We utilize the excellent track pointing resolution provided by the detector to exclusively reconstruct heavy flavor hadron pairs via their hadronic decay channels and also to develop a heavy flavor hadron tagging algorithm. | method 0.98 | 0.91 | 0.04 | asserted 1.00 |
| s6 | Statistical uncertainty projections on azimuthal asymmetries corresponding to gluon TMD at the EIC is evaluated. | contribution 0.64 | 0.90 | 0.06 | asserted 0.99 |
| s7 | The heavy flavor tagging is found to substantially enhance the purity of heavy flavor hadron pair selection, and the statistical precision of the measurement compared to that from exclusive reconstruction. | result 1.00 | 0.94 | 0.22 | asserted 1.00 |
| s8 | The correlation between the azimuthal angle of the transverse momentum of the gluon initiating the process and that of the corresponding heavy flavor hadron pair was also studied and found to be well correlated. | result 1.00 | 0.94 | 0.10 | asserted 1.00 |
| s9 | This study opens up heavy flavor hadron pair measurements as an attractive channel to access gluon TMD at the EIC. | interpretation 0.95 | 0.67 | 0.86 | asserted 0.69 |
What was examined, and what was not
- arXiv listing abstract v2
- full text
- figures and tables
- references and citing sentences
- relations to other papers
- P abstract
- S sections
- T body sentences
- C citations
- R cross-paper relations
The paper
Original abstract
Study of the transverse structure of the proton is one of the major physics goals of the upcoming Electron Ion Collider (EIC). The gluon transverse momentum dependent distributions (TMD) form an essential focus of this effort and are important towards understanding the angular momentum contribution to proton spin as well as QCD factorization. However, very limited experimental constraints on the gluon TMD exist currently. As the heavy quark production in lepton-nucleon DIS gets a dominant contribution from the photon-gluon-fusion process, heavy quark production makes an attractive tool to probe gluon distributions in nucleons. In this paper we present a study of heavy flavor hadron pair reconstruction at a future EIC detector with MAPS based inner tracking and vertexing subsystems to constrain gluon TMD. We utilize the excellent track pointing resolution provided by the detector to exclusively reconstruct heavy flavor hadron pairs via their hadronic decay channels and also to develop a heavy flavor hadron tagging algorithm. Statistical uncertainty projections on azimuthal asymmetries corresponding to gluon TMD at the EIC is evaluated. The heavy flavor tagging is found to substantially enhance the purity of heavy flavor hadron pair selection, and the statistical precision of the measurement compared to that from exclusive reconstruction. The correlation between the azimuthal angle of the transverse momentum of the gluon initiating the process and that of the corresponding heavy flavor hadron pair was also studied and found to be well correlated. This study opens up heavy flavor hadron pair measurements as an attractive channel to access gluon TMD at the EIC.
Human review
References
How the literature uses it
2 arXiv papers cite this in 3 sentences
Papers citing it · 2 sentences without a confident label
Cites it as background 1 paper
-
Previously explored charm tagging methods rely on the ability to identify charged kaons or count displaced tracks, either in the entire event or clustered into jets [ref] .
Topological heavy-flavor tagging and intrinsic bottom at the Electron-Ion Collider · Introduction · 0.86
What it cites · 62 sentences without a confident label
Uses the method or tool of 7 papers
-
The details of the event generation set up are same as those used in the previous study [ref] .
Constraints on Gluon Distribution Functions in the Nucleon and Nucleus from Open Charm Hadron Production at the Electron-Ion Collider · Simulation setup · 0.91
-
Events are generated for $ep$ collisions using PYTHIA 6.4 event generator [ref] that describes well the charm cross-section measurements at HERA, and was used for previous simulation studies at the EIC [ref] .
PYTHIA 6.4 Physics and Manual · Simulation setup · 0.98
-
Events are generated for $ep$ collisions using PYTHIA 6.4 event generator [ref] that describes well the charm cross-section measurements at HERA, and was used for previous simulation studies at the EIC [ref] .
Accessing the Gluon Sivers Function at a future Electron-Ion Collider · Simulation setup · 0.98
Uses data or values from 2 papers
-
The detailed single particle momentum and track pointing resolutions as well as particle identification (PID) capabilities used in the fast-simulation study are provided in Table.1 of the article [ref] .
Constraints on Gluon Distribution Functions in the Nucleon and Nucleus from Open Charm Hadron Production at the Electron-Ion Collider · Simulation setup · 0.80
-
On the other hand, from the more recent COMPASS measurement in DIS with transversely polarized protons and deuterons, the extracted transverse asymmetry $A_UT^PGF$ from the photon gluon fusion (PGF) process, which directly probes the gluon distributions, gives a large value of $-0.23$ at large $x$ ($x ∼ 0.1$) [ref] .
First measurement of the Sivers asymmetry for gluons from SIDIS data · Introduction · 0.96
Cites as support 2 papers
-
The observation of a transverse SSA in $ep^↑ →e'cc̅X$ process would be a smoking gun for gluon Sivers effect at the EIC [ref] .
The gluon Sivers distribution: status and future prospects · Introduction · 0.98
-
Unlike di-jet or di-hadron production which receive sizeable contributions from the quark channel, particularly at large $x$ where the quark contribution dominates, the heavy quark pair production is dominated by gluon channel at all $x$ and gets only minor contribution from the quark channel [ref] .
Accessing the Gluon Sivers Function at a future Electron-Ion Collider · Introduction · 0.98
Cites as background 7 papers
-
Previous simulation studies have looked at heavy flavor hadron pair measurements at the EIC [ref] .
Accessing the Gluon Sivers Function at a future Electron-Ion Collider · Introduction · 0.88
-
The transverse structure of the proton can be studied using Transverse Momentum Dependent parton distribution functions (TMD PDFs), assuming TMD factorization [ref] .
Transverse-Spin and Transverse-Momentum Effects in High-Energy Processes · Introduction · 0.91
-
The transverse structure of the proton can be studied using Transverse Momentum Dependent parton distribution functions (TMD PDFs), assuming TMD factorization [ref] .
Transverse Spin Structure of the Nucleon · Introduction · 0.91
Discussion
Know something about this paper? Leave a comment, or highlight any passage above to comment on it.