A5028696271- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Medical Imaging Techniques and Applications
- Particle Detector Development and Performance
- Data-Driven Disease Surveillance
- Advanced Condensed Matter Physics
- Functional Brain Connectivity Studies
- Dark Matter and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Epilepsy research and treatment
- Methane Hydrates and Related Phenomena
- Magnetic and transport properties of perovskites and related materials
- Radiomics and Machine Learning in Medical Imaging
- Computational Physics and Python Applications
- Electronic and Structural Properties of Oxides
Beijing Normal University
2025
Peking University
2021-2024
United Imaging Healthcare (China)
2024
State Key Laboratory of Nuclear Physics and Technology
2022-2023
University of Science and Technology of China
2007-2008
Jinan University
2008
Institute of High Energy Physics
2008
Guangxi Normal University
2008
Abstract Lepton scattering is an established ideal tool for studying inner structure of small particles such as nucleons well nuclei. As a future high energy nuclear physics project, Electron-ion collider in China (EicC) has been proposed. It will be constructed based on upgraded heavy-ion accelerator, High Intensity Accelerator Facility (HIAF) which currently under construction, together with new electron ring. The proposed provide highly polarized electrons (with polarization ∼80%) and...
Building upon the most recent CT18 global fit, we present a new calculation of photon content proton based on an application LUX formalism. We explore two principal variations ansatz. In one approach, which designate ``CT18lux,'' parton distribution function (PDF) is calculated directly using formula for all scales, $\ensuremath{\mu}$. alternative realization, ``CT18qed,'' instead initialize PDF in terms formulation at lower scale, $\ensuremath{\mu}\ensuremath{\sim}{\ensuremath{\mu}}_{0}$,...
In global QCD fits of parton distribution functions (PDFs), a large part the estimated uncertainty on PDFs originates from choices parametric functional forms and fitting methodology. We argue that these types uncertainties can be underestimated with common PDF ensembles in high-stake measurements at Large Hadron Collider Tevatron. A fruitful approach to quantify is view them as arising sampling allowed solutions multidimensional space. This applies powerful insights gained recent...
We study the impact of lattice data on determination strangeness asymmetry distribution $s_-(x) \equiv s(x) - {\bar s}(x)$ in general CTEQ-TEA global analysis parton functions (PDFs) proton. Firstly, we find that allowing a nonvanishing $s_-(x)$, at initial $Q_0=1.3$~GeV scale, PDF leads to CT18As fit with similar quality CT18A. Secondly, including CT18As\_Lat greatly reduces $s_-$-PDF error band size large-$x$ region. To further reduce its would require more precise data, extended smaller...
In this paper, we present a CT18 PDF global QCD analysis at leading order in perturbation theory. The LO PDFs is obtained within the general framework, along with two additional procedures imposed to improve quality of fit. We take $W$-boson charge asymmetry and inclusive single-top production LHC as examples illustrate implications PDFs.
We review progress in the global QCD analysis by CTEQ-TEA group since publication of CT18 parton distribution functions (PDFs) proton. Specifically, we discuss comparisons NNLO predictions with LHC 13 TeV measurements as well FNAL SeaQuest and BNL STAR data on lepton pair production. The specialized CT18X PDFs approximating saturation effects are compared CT18sx obtained using NLL/NLO small-$x$ resummation. Short summaries presented for special distributions fitted charm lattice inputs. A...
Abstract This report summarizes the latest developments in CTEQ-TEA global analysis of parton distribution functions (PDFs) nucleon. The focus is on recent NNLO fits to high-precision LHC data at 8 and 13 TeV, including Drell–Yan, jet, top-quark pair production, pursued way toward release new generation general-purpose PDFs. also discusses advancements statistical numerical methods for PDF determination uncertainty quantification, highlighting importance robust replicable uncertainties...
A bstract Understanding how sea quarks behave inside a nucleon is one of the most important physics goals proposed Electron-Ion Collider in China (EicC), which designed to have 3.5 GeV polarized electron beam (80% polarization) colliding with 20 proton (70% at instantaneous luminosity 2 × 10 33 cm − s 1 . specific topic EicC understand polarization individual longitudinally nucleon. The potential various future data, including inclusive and semi-inclusive deep inelastic scattering data from...
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Recently, two photon PDF sets based on implementations of the LUX ansatz into CT18 global analysis were released. In CT18lux, is calculated directly using master formula for all scales, \mu <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>μ</mml:mi></mml:math> . an alternative realization, CT18qed, initialized at starting scale, \mu_0 display="inline"><mml:msub><mml:mi>μ</mml:mi><mml:mn>0</mml:mn></mml:msub></mml:math> , formulation and evolved to higher...
The separation of the connected and disconnected sea partons, which were uncovered in Euclidean path-integral formulation hadronic tensor, is accommodated with an alternative parametrization non-perturbative parton distribution functions CT18 global analysis. This achieved help distinct small $x$ behaviours these two partons constraint from lattice calculation ratio strange momentum fraction to that $\bar u$ or d$ insertion. whole dataset used this CT18CS fit. impact recent SeaQuest data on...
We study the impact of lattice data on determination strangeness asymmetry distribution $s_-(x) \equiv s(x) - {\bar s}(x)$ in general CTEQ-TEA global analysis parton functions (PDFs) proton. Firstly, we find that allowing a non-vanishing $s_-(x)$, at initial $Q_0=1.3$ GeV scale, PDF leads to quality CT18As fit similar CT18A. Secondly, including CT18As\_Lat greatly reduces $s_-$-PDF error band size large $x$ region. To further reduce its would require more precise data, extended smaller values.
This report summarizes the latest developments in CTEQ-TEA global analysis of parton distribution functions (PDFs) nucleon. The focus is on recent NNLO fits to high-precision LHC data at 8 and 13 TeV, including Drell-Yan, jet, top-quark pair production, pursued way toward release new generation general-purpose PDFs. also discusses advancements statistical numerical methods for PDF determination uncertainty quantification, highlighting importance robust replicable uncertainties high-stakes...
Parton distribution functions (PDFs) form an essential part of particle physics calculations. Currently, the most precise predictions for these non-perturbative are generated through fits to global data. A problem that several PDF fitting groups encounter is presence tension in data sets appear pull different directions. In other words, best fit depends on choice set. Several methods capture uncertainty PDFs seemingly inconsistent have been proposed and currently use. These important ensure...
We discuss recent CTEQ-TEA group activities after the publication of CT18 global analysis parton distribution functions (PDFs) in proton. In particular, we a new calculation for photon content proton, termed as CT18lux and CT18qed PDFs, impact novel charm- bottom-quark production cross section measurements at HERA on analysis.
The separation of the connected and disconnected sea partons, which were uncovered in Euclidean path-integral formulation hadronic tensor, is accommodated with CT18 parametrization global analysis parton distribution functions (PDFs). This achieved help distinct small x <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>x</mml:mi></mml:math> behaviors these two components constraint from lattice calculation ratio strange momentum fraction to that {\bar u}...
We review progress in the global QCD analysis by CTEQ-TEA group since publication of CT18 parton distribution functions (PDFs) proton. Specifically, we discuss comparisons NNLO predictions with LHC 13 TeV measurements as well FNAL SeaQuest and BNL STAR data on lepton pair production. The specialized CT18X PDFs approximating saturation effects are compared CT18sx obtained using NLL/NLO small-$x$ resummation. Short summaries presented for special distributions fitted charm lattice inputs. A...
Recently, two photon PDF sets based on implementations of the LUX ansatz into CT18 global analysis were released. In CT18lux, is calculated directly using master formula for all scales, $\mu$. an alternative realization, CT18qed, initialized at starting scale, $\mu_0$, formulation and evolved to higher scales $\mu(>\mu_0)$ with a combined QED+QCD kernel $\mathcal{O}(\alpha),~\mathcal{O}(\alpha\alpha_s)$ $\mathcal{O}(\alpha^2)$. small-$x$ region, uncertainty mainly induced by quark gluon...
In this paper, we present a CT18 PDFs fitted with Leading-Order QCD perturbation theory. The LO is obtained within the general framework, along two additional treatments being imposed to improve quality of fit. We take $W$-boson charge asymmetry and inclusive single-top production at LHC as examples illustrate implication PDFs.
In global QCD fits of parton distribution functions (PDFs), a large part the estimated uncertainty on PDFs originates from choices parametric functional forms and fitting methodology. We argue that these types uncertainties can be underestimated with common PDF ensembles in high-stake measurements at Large Hadron Collider Tevatron. A fruitful approach to quantify is view them as arising sampling allowed solutions multidimensional space. This applies powerful insights gained recent...
The separation of the connected and disconnected sea partons, which were uncovered in Euclidean path-integral formulation hadronic tensor, is accommodated with an alternative parametrization non-perturbative parton distribution functions CT18 global analysis. This achieved help distinct small $x$ behaviours these two partons constraint from lattice calculation ratio strange momentum fraction to that $\bar u$ or d$ insertion. whole dataset used this CT18CS fit. impact recent SeaQuest data on...
We study the impact of lattice data on determination strangeness asymmetry distribution $s_-(x) \equiv s(x) - {\bar s}(x)$ in general CTEQ-TEA global analysis parton functions (PDFs) proton. Firstly, we find that allowing a nonvanishing $s_-(x)$, at initial $Q_0=1.3$~GeV scale, PDF leads to CT18As fit with similar quality CT18A. Secondly, including CT18As\_Lat greatly reduces $s_-$-PDF error band size large-$x$ region. To further reduce its would require more precise data, extended smaller...