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相关论文: First Monte Carlo global QCD analysis of pion part…

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We perform a new Monte Carlo QCD analysis of pion parton distribution functions, including, for the first time, transverse momentum dependent pion-nucleus Drell-Yan cross sections together with $p_{\rm T}$-integrated Drell-Yan and leading…

高能物理 - 唯象学 · 物理学 2021-12-01 N. Y. Cao , P. C. Barry , N. Sato , W. Melnitchouk

We perform the first global QCD analysis of parton distribution functions (PDFs) in the pion, with lattice-QCD data on gluonic pseudo--Ioffe-time distributions fitted simultaneously with experimental Drell-Yan and leading neutron…

高能物理 - 唯象学 · 物理学 2025-08-04 William Good , Patrick C. Barry , Huey-Wen Lin , W. Melnitchouk , Alex NieMiera , Nobuo Sato

We present a new analysis to extract pion's parton distribution functions (PDFs) in the framework of the statistical model. Starting from the statistical model framework first developed for the spin-1/2 nucleon, we apply appropriate…

高能物理 - 唯象学 · 物理学 2021-02-03 Claude Bourrely , Franco Buccella , Jen-Chieh Peng

We perform the first simultaneous global QCD analysis of pion and kaon parton distribution functions (PDFs), constrained by pion- and kaon-induced Drell-Yan (DY) and leading neutron electroproduction data, together with lattice QCD data on…

高能物理 - 唯象学 · 物理学 2025-10-15 P. C. Barry , Chueng-Ryong Ji , W. Melnitchouk , N. Sato , Fernanda Steffens

We present new parton distribution functions (PDFs) at next-to-leading order (NLO) and next-to-next-to-leading order (NNLO) in perturbative QCD, derived from a comprehensive global QCD analysis of high-precision data sets from combined HERA…

高能物理 - 唯象学 · 物理学 2024-12-17 Majid Azizi , Maryam Soleymaninia , Hadi Hashamipour , Maral Salajegheh , Hamzeh Khanpour , Ulf-G. Meißner

We present the first open-source analysis of parton distribution functions (PDFs) of charged pions using xFitter, an open-source QCD fit framework to facilitate PDF extraction and analyses. Our calculations are implemented at…

The correct description of the hadron's structure requires understanding how quarks and gluons form the observable hadrons and how they are distributed within them. Two key nonperturbative quantities encapsulate this information: parton…

高能物理 - 唯象学 · 物理学 2025-12-17 Gustavo B. Bopsin , Bruno El-Bennich , Gastão Krein , Fernando E. Serna , Roberto C. da Silveira

Study of parton distribution functions (PDFs) has led to a finer cognisance of the structure of partons in hadrons and the proton structure functions in deep inelastic scattering (DIS). PDFs are instrumental in predicting results for most…

高能物理 - 唯象学 · 物理学 2025-10-02 Akbari Jahan , Diptimonta Neog

We present an analysis to extract kaon parton distribution functions (PDFs) for the first time using meson-induced Drell-Yan and quarkonium production data. Starting from the statistical model first developed for determining the partonic…

高能物理 - 唯象学 · 物理学 2023-09-21 Claude Bourrely , Franco Buccella , Wen-Chen Chang , Jen-Chieh Peng

In this article we present a review of the structure of the proton and the current status of our knowledge of the parton distribution functions (PDFs). The lepton-nucleon scattering experiments which provide the main constraints in PDF…

高能物理 - 实验 · 物理学 2013-03-20 Emmanuelle Perez , Eram Rizvi

We perform the first global QCD analysis of pion valence, sea quark, and gluon distributions within a Bayesian Monte Carlo framework with threshold resummation on Drell-Yan cross sections at next-to-leading log accuracy. Exploring various…

高能物理 - 唯象学 · 物理学 2021-12-01 P. C. Barry , Chueng-Ryong Ji , N. Sato , W. Melnitchouk

We present a new QCD analysis of parton distribution functions (PDFs) at the next-to-leading order (NLO) and next-to-next-to-leading order (NNLO). In the present paper, the role of special types of experimental measurements for extracting…

高能物理 - 唯象学 · 物理学 2024-05-20 Majid Azizi , Ali Khorramian , Saeid Paktinat Mehdiabadi

In the framework of quantum chromodynamics (QCD), parton distribution functions (PDFs) quantify how the momentum and spin of a hadron are divided among its quark and gluon constituents. Two main approaches exist to determine PDFs. The first…

We extract pion parton distribution functions (PDFs) in a Monte Carlo global QCD analysis of experimental data together with reduced Ioffe time pseudo-distributions and matrix elements of current-current correlators generated from lattice…

高能物理 - 唯象学 · 物理学 2022-07-13 P. C. Barry , C. Egerer , J. Karpie , W. Melnitchouk , C. Monahan , K. Orginos , Jian-Wei Qiu , D. Richards , N. Sato , R. S. Sufian , S. Zafeiropoulos

We present a new analysis to extract pion parton distribution functions (PDFs) within the framework of the statistical model. Starting from the statistical model first developed for the spin-1/2 nucleon, we extend this model to describe the…

高能物理 - 唯象学 · 物理学 2022-04-29 Claude Bourrely , Wen-Chen Chang , Jen-Chieh Peng

The combined HERA-I data set, of neutral and charged current inclusive cross-sections for $e^+p$ and $e^-p$ scattering, is used as the sole input for a next-to-leading order (NLO) QCD parton distribution function (PDF) fit. The consistent…

高能物理 - 唯象学 · 物理学 2008-08-14 A M Cooper-Sarkar

We perform a comprehensive new Monte Carlo analysis of high-energy lepton-lepton, lepton-hadron and hadron-hadron scattering data to simultaneously determine parton distribution functions (PDFs) in the proton and parton to hadron…

高能物理 - 唯象学 · 物理学 2021-10-20 E. Moffat , W. Melnitchouk , T. C. Rogers , N. Sato

In this paper, we present the extraction of the Parton Distribution Functions (PDFs) at small momentum fractions x and at the next-to-leading order (NLO) accuracy in perturbative QCD. We show that the "sea quark distribution functions" have…

高能物理 - 唯象学 · 物理学 2023-10-31 Samira Shoeibi Mohsenabadi , Shahin Atashbar Tehrani , Fatemeh Taghavi-Shahri

The parton distribution functions (PDFs) of the proton are one of the essential ingredients to describe physics processes at hadron colliders. The Z boson production data at the LHC have a potential to constrain PDFs, especially the gluon…

高能物理 - 唯象学 · 物理学 2016-08-31 Rajdeep M Chatterjee , Monoranjan Guchait , Ringaile Placakyte

The parton distribution functions (PDFs) provide process-independent information about the quarks and gluons inside hadrons. Although the gluon PDF can be obtained from a global fit to experimental data, it is not constrained well in the…

高能物理 - 格点 · 物理学 2021-06-09 Zhouyou Fan , Rui Zhang , Huey-Wen Lin
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