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We assess the impact of future measurements of deeply virtual Compton scattering (DVCS) off protons using the planned detector at the Electron-Ion Collider in China (EicC), proposed as an upgrade to the High Intensity heavy-ion Accelerator…

高能物理 - 唯象学 · 物理学 2026-05-26 Yuan-Yuan Huang , Xu Cao , Taifu Feng , Krešimir Kumerički , Yu Lu

We discuss techniques and results for the extraction of the nucleon's spin-dependent parton distributions and their uncertainties from data for polarized deep-inelastic lepton-nucleon and proton-proton scattering by means of a global QCD…

高能物理 - 唯象学 · 物理学 2009-09-01 Daniel de Florian , Rodolfo Sassot , Marco Stratmann , Werner Vogelsang

Multiplicities in semi-inclusive deep-inelastic scattering are presented for each charge state of \pi^\pm and K^\pm mesons. The data were collected by the HERMES experiment at the HERA storage ring using 27.6 GeV electron and positron beams…

高能物理 - 实验 · 物理学 2013-04-25 HERMES Collaboration , A. Airapetian , N. Akopov , Z. Akopov , E. C. Aschenauer , W. Augustyniak , R. Avakian , A. Avetissian , E. Avetisyan , S. Belostotski , H. P. Blok , A. Borissov , J. Bowles , I. Brodski , V. Bryzgalov , J. Burns , M. Capiluppi , G. P. Capitani , E. Cisbani , G. Ciullo , M. Contalbrigo , P. F. Dalpiaz , W. Deconinck , R. De Leo , L. De Nardo , E. De Sanctis , M. Diefenthaler , P. Di Nezza , M. Düren , M. Ehrenfried , G. Elbakian , F. Ellinghaus , R. Fabbri , A. Fantoni , L. Felawka , S. Frullani , D. Gabbert , G. Gapienko , V. Gapienko , F. Garibaldi , G. Gavrilov , V. Gharibyan , F. Giordano , S. Gliske , M. Golembiovskaya , C. Hadjidakis , M. Hartig , D. Hasch , A. Hillenbrand , M. Hoek , Y. Holler , I. Hristova , Y. Imazu , A. Ivanilov , A. Izotov , H. E. Jackson , H. S. Jo , S. Joosten , R. Kaiser , G. Karyan , T. Keri , E. Kinney , A. Kisselev , N. Kobayashi , V. Korotkov , V. Kozlov , P. Kravchenko , V. G. Krivokhijine , L. Lagamba , L. Lapikás , I. Lehmann , P. Lenisa , A. López Ruiz , W. Lorenzon , B. -Q. Ma , D. Mahon , B. Maiheu , N. C. R. Makins , S. I. Manaenkov , L. Manfré , Y. Mao , B. Marianski , A. Martinez de la Ossa , H. Marukyan , C. A. Miller , Y. Miyachi , A. Movsisyan , M. Murray , A. Mussgiller , E. Nappi , Y. Naryshkin , A. Nass , M. Negodaev , W. -D. Nowak , L. L. Pappalardo , R. Perez-Benito , A. Petrosyan , M. Raithel , P. E. Reimer , A. R. Reolon , C. Riedl , K. Rith , G. Rosner , A. Rostomyan , J. Rubin , D. Ryckbosch , Y. Salomatin , F. Sanftl , A. Schäfer , G. Schnell , B. Seitz , T. -A. Shibata , V. Shutov , M. Stancari , M. Statera , E. Steffens , J. J. M. Steijger , J. Stewart , F. Stinzing , S. Taroian , A. Terkulov , R. Truty , A. Trzcinski , M. Tytgat , Y. Van Haarlem , C. Van Hulse , D. Veretennikov , I. Vilardi , C. Vogel , S. Wang , S. Yaschenko , Z. Ye , S. Yen , W. Yu , V. Zagrebelnyy , D. Zeiler , B. Zihlmann , P. Zupranski

Recent studies suggest that global fits of Parton Distribution Functions (PDFs) might inadvertently 'fit away' signs of new physics in the high-energy tails of the distributions measured at the high luminosity programme of the LHC (HL-LHC).…

高能物理 - 唯象学 · 物理学 2024-10-03 Elie Hammou , Maria Ubiali

The contribution to proton helicity from the spins of quarks and gluons at small Bjorken $x$ can be conveniently studied through the small-$x$ helicity evolution. Recently, it has been employed in a global analysis that includes polarized…

高能物理 - 唯象学 · 物理学 2024-07-16 Yossathorn Tawabutr

The large center of mass energy and increasing statistical precision for a wide range of hadronic final state observables at the HERA lepton-proton collider has provided a detailed testing ground for QCD dynamics. Fully flexible…

高能物理 - 唯象学 · 物理学 2007-05-23 E. Mirkes

The quantitative knowledge of heavy nuclei's partonic structure is currently limited to rather large values of momentum fraction $x$ -- robust experimental constraints below $x \sim 10^{-2}$ at low resolution scale $Q^2$ are particularly…

核实验 · 物理学 2017-12-13 E. C. Aschenauer , S. Fazio , M. A. C. Lamont , H. Paukkunen , Pia Zurita

We present a detailed phenomenological study of charged-current-mediated deep-inelastic scattering off longitudinally polarized nucleons at a future Electron-Ion Collider. A new version of the event generator package DJANGOH, extended by…

高能物理 - 唯象学 · 物理学 2013-12-16 Elke C. Aschenauer , Thomas Burton , Till Martini , Hubert Spiesberger , Marco Stratmann

We analyze the possibility of extracting a clear signal of non-linear parton saturation effects from future measurements of nuclear structure functions at the Electron-Ion Collider (EIC), in the small-x region. Our approach consists in…

高能物理 - 唯象学 · 物理学 2017-09-13 Cyrille Marquet , Manoel R. Moldes , Pía Zurita

Inclusive e\pmp single and double differential cross sections for neutral and charged current deep inelastic scattering processes are measured with the H1 detector at HERA. The data were taken at a centre-of-mass energy of \surds = 319GeV…

高能物理 - 实验 · 物理学 2012-08-27 H1 Collaboration

We expect to observe parton saturation in a future electron - ion collider. In this letter we discuss this expectation in more detail considering two different models which are in good agreement with the existing experimental data on…

高能物理 - 唯象学 · 物理学 2009-01-14 E. R. Cazaroto , F. Carvalho , V. P. Gonçalves , F. S. Navarra

The inclusive probability to record an electron in elastic electromagnetic scattering of an electron by a spin one-half hadron is obtained, the initial quantum states of the electron and the hadron being described by the density matrices of…

高能物理 - 唯象学 · 物理学 2023-12-08 P. O. Kazinski , D. I. Rubtsova , A. A. Sokolov

We compare the single inclusive spectra of isolated photons measured at high transverse energy in proton-antiproton collisions at sqrt(s)=1.96 TeV with next-to-leading order perturbative QCD predictions with various parametrizations of the…

高能物理 - 唯象学 · 物理学 2010-09-08 Raphaelle Ichou , David d'Enterria

This contribution presents the most recent mid-rapidity inclusive jet results from 3 pb^-1 of data collected from longitudinally polarized proton collisions at sqrt(s)=200 GeV during the 2005 RHIC run. The inclusive jet asymmetry, a_LL,…

高能物理 - 实验 · 物理学 2008-07-11 STAR Collaboration , Renee Fatemi

The hadron inclusive spectra in pp collisions at high energies are analyzed within a soft QCD model, namely the quark-gluon string model. In addition to the sea quark distribution in the incoming proton we consider also the unintegrated…

高能物理 - 唯象学 · 物理学 2015-03-17 V. A. Bednyakov , G. I. Lykasov , M. G. Poghosyan

We investigate the determination of the partonic structure of colorless exchanges in deep inelastic diffractive $ep$ scattering at the Electron Ion Collider, using the standard decomposition into Pomeron and Reggeon contributions. We…

高能物理 - 唯象学 · 物理学 2024-10-03 Néstor Armesto , Paul R. Newman , Wojciech Słomiński , Anna M. Staśto

This contribution covers three recent results on deep-inelastic scattering at HERA: (i) new measurements of the proton longitudinal structure function $F_L$ from H1 and ZEUS experiments, (ii) a dedicated NC cross section measurement from…

高能物理 - 实验 · 物理学 2019-08-14 Zhiqing Zhang

A future Electron-Ion Collider (EIC) will deliver luminosities of $10^{33} - 10^{34}$ cm$^{-2}$s$^{-1}$ for collisions of polarized electrons and protons and heavy ions over a wide range of center-of-mass energies (40 $\mathrm{GeV}$ to 145…

核实验 · 物理学 2016-07-12 Xiaoxuan Chu , Elke-Caroline Aschenauer , Jeong-Hun Lee

The unique experimental connection to the QCD energy-momentum tensor offered by generalised parton distributions has been strongly highlighted in the past few years with attempts to extract the pressure and shear forces distributions within…

高能物理 - 唯象学 · 物理学 2024-10-18 Hervé Dutrieux , Thibaud Meisgny , Cédric Mezrag , Hervé Moutarde

This article introduces {\tt AAK24}, a Next-to-Leading Order (NLO) QCD analysis of polarized data from both polarized Deep Inelastic Scattering (DIS) and Semi-Inclusive Deep Inelastic Scattering (SIDIS) experiments on the nucleon. The {\tt…

高能物理 - 唯象学 · 物理学 2024-09-24 Fatemeh Arbabifar , Shahin Atashbar Tehrani , Hamzeh Khanpour