Elementary Particle Physics:

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Theory:

Electron-proton elastic and inelastic scattering Form factors

Deep Inelastic Scattering (DIS) and proton structure functions (PDFs)

theory and experiments

Prof. dr hab. Elżbieta Richter-Wąs

Slides taken from M. A. Thomson lectures at Cambridge University in 2011

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Electron-proton scattering

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Electron-proton scattering

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Crossing symmetry

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Probing the structure of the proton

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Rutherford scattering revisited

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13 QED coupling

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The Mott scattering cross-section

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Form factors

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Point-like electron-proton scattering

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Interpretation

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Interpretation

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Elastic scattering from a finite size proton

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Measuring from-factors

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Higher energy electron-proton scattering

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High q² results

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Summary: elastic scattering

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Deep-Inelastic scattering

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e^- p Elastic Scattering at very high q²

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Kinematics of inelastic scattering

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Relationship between kinematic variables

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Inelastic scattering

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Inelastic cross-sections

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Elastic -> Inelastic scattering

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Deep Inelastic scattering

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Measuring the structure functions

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Bjorken scalling and Callan-Gross relation

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The quark-parton model

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Valence and Sea Quarks

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Parton Distribution Functions (PDFs)

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Scaling violations

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HERA e^±p Collider: 1991 - 2007

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Example of a High Q² event in H1

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F₂(x, Q²) results

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Origin of Scaling Violations

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Proton-proton colisions at the LHC

2012 Year 2012

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Summary