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Dipartimento di Fisica

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Linear and Non-linear Dynamics of Quantum Chromodynamics at High-Energy
Speaker Speaker: dr. Giovanni Antonio Chirilli
Affiliato Affiliato: The Ohio State University
Data Evento Martedì 11 Dicembre 2012, alle ore 15.30 - Sala riunioni V piano, cubo 31C
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Hadronic matter is made of asymptotically free particles as quasi on-shell excitations, quarks and gluons. Due to their con¯ning properties, they can not be measured directly, so experiments like Deep Inelastic Scattering (DIS) allow to study the structure of hadronic matter through Quantum Chromodynamics (QCD). Hadronic matter can be probed mainly in two diŽerent limits, the Bjorken limit and the Regge limit. In the Bjorken limit the dynamics of the process is dominated by incoherent interactions and the hadronic matter evolves towards a dilute system. Such evolution is governed by the Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) evolution equation. On the other hand, at high-energy (Regge limit) coherent interactions and non-linear eŽects are dominant and the hadronic matter evolves towards a high-density regime. The pre-asymptotic behavior of
the scattering amplitude at high-energy is governed by the Balitsky-Fadin-Kuraev-Lipatov (BFKL) evolution equation, but since the BFKL equation is a linear evolution equation it can not describe the non-linear dynamics. Non-linear evolution equations like the Balitsky-Kovchegov (BK) evolution equation and the Jalilian-Marian, Iancu, McLerran, Weigert, Leonidov, Kovner (JIMWLK) evolution equation are nowadays the starting point of discussion for future experiments like the Electron Ion Collider (EIC) or the Large Hadron electron Collider (LHeC). These experiments will give us an insight into the ¯ne structure of matter at high-energy and high-density regime.