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The Science of an EIC Nuclear Science Goals: How do we understand the visible matter in our universe in terms of the fundamental quarks and gluons of QCD?

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Presentation on theme: "The Science of an EIC Nuclear Science Goals: How do we understand the visible matter in our universe in terms of the fundamental quarks and gluons of QCD?"— Presentation transcript:

1 The Science of an EIC Nuclear Science Goals: How do we understand the visible matter in our universe in terms of the fundamental quarks and gluons of QCD? Overarching EIC Goal: Explore and Understand QCD In NSAC 2007 Long Range Plan Electron Ion Collider science is linked to three major questions: What is the role of gluons and gluon self-interactions in nucleons and nuclei? What is the internal landscape of the nucleons? What governs the transition of quarks and gluons into pions and nucleons? Note: Electroweak studies not included

2 The Science of an EIC Nuclear Science Goals: How do we understand the visible matter in our universe in terms of the fundamental quarks and gluons of QCD? Overarching EIC Goal: Explore and Understand QCD Four (or Three?) Major Science Questions: 1)What is the internal spin landscape of nucleons? 2)What is the three-dimensional spatial landscape of nucleons? 3)What is the role of gluons in nuclei? 4)What governs the transition of quarks and gluons into pions and nucleons? Elevator EIC goals: Map the spin and 3D quark-gluon structure of protons Discover the role of gluons in nuclei Understand the creation of the quark-gluon matter around us

3 The Science of an EIC – Golden Experiments What is the Role of Gluons in Nuclei? 5)Gluon momentum measurements in nuclei – signatures of (approach to) gluon saturation 6)Measurements of the probability for a nucleus to stay intact in a high-energy scattering process What Governs the Transition of Quarks and Gluons into Pions and Nucleons? 7)Measurement of the energy loss of various quark flavors and gluons vs. momentum 8)Map the physical mechanism of fragmentation of correlated quarks and gluons, and understand how we can calculate it quantitatively

4 1)  G vs ln(Q 2 ) 2) Polarization of the sea quarks – long-range spatial correlations in the QCD vacuum 3) Transverse spin and momentum measurements and correlations The Science of an EIC – Golden Experiments What is the Internal Spin Landscape of Nucleons? What is the Three-Dimensional Spatial Landscape of Nucleons? 4)Transverse imaging of quarks and gluons in nucleons and nuclei 2) Momentum dependence of the sea quarks (& gluons) – long-range spatial correlations in the QCD vacuum 3) Transverse momentum dependent measurements and correlations – or unintegrated parton distributions

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