BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:A unified derivation of JIMWLK\, DGLAP\, and CSS evolution from on e-loop corrections to the Weizsäcker–Williams gluon distribution DTSTART;VALUE=DATE-TIME:20260427T140000Z DTEND;VALUE=DATE-TIME:20260427T150000Z DTSTAMP;VALUE=DATE-TIME:20260909T104228Z UID:indico-contribution-346-1951@events.ncbj.gov.pl DESCRIPTION:Speakers: Paul Caucal (SUBATECH\, Universite de Nantes\, Franc e)\nAzimuthal correlations in inclusive dijet production in electron–nuc leus collisions provide a powerful and direct probe of the Weizsäcker–W illiams (WW) gluon transverse-momentum dependent (TMD) distribution in nuc lei. In particular\, at small Bjorken x\, this observable is a key tool to investigate gluon saturation at the future Electron–Ion Collider (EIC). To reliably extract the WW gluon TMD and the associated saturation scale from future measurements\, high theoretical precision is essential\, inclu ding a consistent treatment of quantum evolution effects across different kinematic regimes.\n\nIn this talk\, I revisit the calculation of next-to- leading order (NLO) corrections to dijet production at small x. Focusing o n the back-to-back limit\, I present a complete result for real NLO correc tions associated with gluon radiation outside the jet cones. The result pr eserves TMD factorisation\, with the same hard factor as at leading order\ , multiplying the one-loop correction to the WW gluon TMD at small x. By e xploring different kinematic regimes\, I show how the calculation naturall y incorporates the relevant quantum evolution effects\, unifying small-x\, Collins-Soper-Sterman\, and collinear dynamics. In the dilute limit\, the result also connects to the unintegrated gluon distribution of the target and provides access to transverse-momentum dependent gluon splitting func tion.\n\nhttps://events.ncbj.gov.pl/event/346/contributions/1951/ LOCATION: URL:https://events.ncbj.gov.pl/event/346/contributions/1951/ END:VEVENT BEGIN:VEVENT SUMMARY:Nucleon and nuclear PDFs\, from HERA to EIC DTSTART;VALUE=DATE-TIME:20260316T140000Z DTEND;VALUE=DATE-TIME:20260316T150000Z DTSTAMP;VALUE=DATE-TIME:20260909T104228Z UID:indico-contribution-346-1940@events.ncbj.gov.pl DESCRIPTION:Speakers: Tyler Kutz (Johannes Gutenberg-Universität\, Mainz \, Germany)\nThe discovery of the pointlike constituents of the proton ins pired massive experimental efforts to use deep inelastic scattering (DIS) to understand the partonic structure of hadrons. Early experiments were pe rformed at fixed-target facilities\, which made important findings but wer e limited in accessible kinematics. The Hadron-Electron Ring Accelerator ( HERA)\, operated at DESY between 1991-2007\, pioneered high-energy DIS as the first facility to collide electron (and positron) beams with proton be ams at center of mass energies up to 320 GeV. The data from HERA revolutio nized our understanding of the proton’s internal structure\, and continu e to provide critical constraints on global analyses of parton distributio n functions (PDFs) of the proton. The electron-ion collider (EIC)\, under development at Brookhaven National Laboratory\, will succeed HERA as a nex t-generation DIS collider facility. The EIC will facilitate fully polarize d collisions between electrons and protons\, at lower center of mass energ ies but two orders of magnitude higher luminosity than HERA. Further\, the EIC will allow collisions with ions\, ranging from deuterium and helium t o heavy nuclei such as lead. This talk will discuss our evolving understan ding of the partonic structure of nucleons and nuclei\, from the lasting l egacy of HERA to the projected impact of the EIC.\n\nhttps://events.ncbj.g ov.pl/event/346/contributions/1940/ LOCATION: URL:https://events.ncbj.gov.pl/event/346/contributions/1940/ END:VEVENT BEGIN:VEVENT SUMMARY:Spin-orbit entanglement in QCD DTSTART;VALUE=DATE-TIME:20250505T130000Z DTEND;VALUE=DATE-TIME:20250505T140000Z DTSTAMP;VALUE=DATE-TIME:20260909T104228Z UID:indico-contribution-346-1821@events.ncbj.gov.pl DESCRIPTION:Speakers: Yoshitaka Hatta (BNL\, USA)\nSpin-orbit coupling is a ubiquitous phenomenon across many areas of contemporary science. I discu ss aspects of the spin-orbit coupling of quarks and gluons orbiting inside hadrons. In the first part\, I derive a novel momentum sum rule where the spin-orbit correlation plays a crucial role. This is the momentum version of the Jaffe-Manohar spin sum rule. In the second part\, I point out the connection to quantum entanglement. I show that the spin and orbital angul ar momentum of individual partons at small-x are maximally entangled\, for ming the Bell states. The extension to finite x will also be discussed.\n\ nhttps://events.ncbj.gov.pl/event/346/contributions/1821/ LOCATION: URL:https://events.ncbj.gov.pl/event/346/contributions/1821/ END:VEVENT BEGIN:VEVENT SUMMARY:Spinning gluon and long range correlation at RHIC\, LHC\, and EIC DTSTART;VALUE=DATE-TIME:20250210T140000Z DTEND;VALUE=DATE-TIME:20250210T150000Z DTSTAMP;VALUE=DATE-TIME:20260909T104228Z UID:indico-contribution-346-1788@events.ncbj.gov.pl DESCRIPTION:Speakers: Feng Yuan (Lawrence Berkeley National Laboratory)\nI n this talk\, we will present a proposal to unveil the hadron tomography t hrough the nucleon energy-energy correlators (NEEC) at hadron colliders (R HIC and LHC) and the future electron-ion collider (EIC)\, focusing on spin ning gluon effects and small-x saturation. We will show that the gluon sat uration at small-x predicts a significantly different shape for the angula r distribution of the NEEC. We further discuss the long range azimuthal an gle asymmetries to probe the spinning (linearly polarized) gluon distribut ions inside the nucleon.\n\nhttps://events.ncbj.gov.pl/event/346/contribut ions/1788/ LOCATION: URL:https://events.ncbj.gov.pl/event/346/contributions/1788/ END:VEVENT BEGIN:VEVENT SUMMARY:Small-x Quark and Gluon Helicity and OAM Contributions to the Prot on Spin Puzzle DTSTART;VALUE=DATE-TIME:20241104T140000Z DTEND;VALUE=DATE-TIME:20241104T150000Z DTSTAMP;VALUE=DATE-TIME:20260909T104228Z UID:indico-contribution-346-1753@events.ncbj.gov.pl DESCRIPTION:Speakers: Yuri Kovchegov ( Department of Physics\, The Ohio St ate University)\nOne of the fundamental questions in our understanding of the proton structure is the proton spin puzzle. Theoretically\, adding all the helicities and orbital angular momenta (OAM) of the quarks and gluons in the proton should give us 1/2\, the spin of the proton. At the same ti me\, adding the experimentally measured spin carried by the quarks and glu ons in the proton comes up short\, presently giving us a number in the 0.3 -0.4 range. This decades-old discrepancy is known as the "proton spin puzz le". In this talk we will discuss the possibility that the missing spin of the proton can be carried by quarks and gluons carrying a small fraction x of the proton momentum. This contribution is mostly beyond the reach of current experiments and is very hard to calculate numerically on the latti ce. It appears that an improved theoretical understanding of quark and glu on helicity and OAM distributions at small x is needed to assess the amoun t of proton spin coming from this region. In this talk I will describe the work of my group to construct such a theory: I will derive the novel smal l-x evolution equations for helicity and solve them to find the small-x as ymptotics of the quark and gluon helicity and OAM distributions. I will sh ow how these equations can be used to obtain a first-ever fit of the world polarized DIS and SIDIS data for x\n\nhttps://events.ncbj.gov.pl/event/34 6/contributions/1753/ LOCATION: URL:https://events.ncbj.gov.pl/event/346/contributions/1753/ END:VEVENT BEGIN:VEVENT SUMMARY:Synergies between the Electron-Ion Collider and the Large Hadron C ollider experiments DTSTART;VALUE=DATE-TIME:20240624T110000Z DTEND;VALUE=DATE-TIME:20240624T120000Z DTSTAMP;VALUE=DATE-TIME:20260909T104228Z UID:indico-contribution-346-1593@events.ncbj.gov.pl DESCRIPTION:Speakers: Daniël Boer (University of Groningen)\nAfter a bri ef introduction to the Electron-Ion Collider (EIC) and the Joint ECFA-NuPE CC-APPEC Activity on "Synergies between the Electron-Ion Collider and the Large Hadron Collider experiments"\, I will go into examples of such syner gies\, focusing mostly on the QCD related ones: parton densities of proton s and nuclei\, quarkonium production\, transverse momentum dependent parto n distributions (TMDs) and generalized TMDs\, double parton scattering and diffraction. Other synergies for electroweak and BSM studies and with ast roparticle physics will also be touched upon briefly.\n\nhttps://events.nc bj.gov.pl/event/346/contributions/1593/ LOCATION: URL:https://events.ncbj.gov.pl/event/346/contributions/1593/ END:VEVENT BEGIN:VEVENT SUMMARY:The electron-ion collider: A collider to unravel the mysteries of visible matter DTSTART;VALUE=DATE-TIME:20240422T130000Z DTEND;VALUE=DATE-TIME:20240422T140000Z DTSTAMP;VALUE=DATE-TIME:20260909T104228Z UID:indico-contribution-346-1477@events.ncbj.gov.pl DESCRIPTION:Speakers: Elke-Caroline Aschenauer (Brookhaven National Lab )\nUnderstanding the properties of nuclear matter and its emergence throug h the underlying partonic structure and dynamics of quarks and gluons requ ires a new experimental facility in hadronic physics known as the Electron -Ion Collider (EIC). The EIC will address some of the most profound questi ons concerning the emergence of nuclear properties by precisely imaging gl uons and quarks inside protons and nuclei such as their distributions in s pace and momentum\, their role in building the nucleon spin and the proper ties of gluons in nuclei at high energies. The polarised EIC beams do not only allow to study the longitudinal and transverse polarized nucleon spin structure\, but also to use polarization as a vehicle to access nucleon/n uclei structure difficult to study with unpolarized beams. This presentati on will give highlights on the EIC science program\, introduce the needed experimental equipment and describe the components of the EIC accelerator critical for the science program. The talk will end summarizing the status of the EIC project.\n\nhttps://events.ncbj.gov.pl/event/346/contributions /1477/ LOCATION: URL:https://events.ncbj.gov.pl/event/346/contributions/1477/ END:VEVENT END:VCALENDAR