FYSS9000 High energy scattering in QCD, spring 2023

Generalities

• Lecture materials, exercise questions will be on this open webpage
• The Moodle page for the course is used for exercise returns.

Lecture note

• First version on 15.3.2023, some sections still completely missing
• Version on 23.3.2023, typo corrections, in particular at the end of Sec. 3.1
• Version on Mar 30: small typo corrections in Sec 3.3, first version of Sec 2.1.
• Version on Mar 31: end of Sec. 2.3
• Version on April 17: small corrections, signs etc.
• Version on April 18: added Sec 2.4, the Lipatov vertex
• Version on April 23: added Sec 2.5, the BFKL equation (potentially many typos here yet)
• Version on April 24: typo corrections in Secs 2.4, 2.5
• Version on April 26: completed Sec 4.1 preliminary version
• Version on April 27: small corrections in Sec 4.1
• Version on May 3: more on LCPT, Sec 4.2
• Version on May 5: small corrections/additions, in particular in Sec 4.3
• Version on May 25: small corrections/additions in Sec. 5.3

Lecture diary

• Lecture 1 Mon March 20: Introduction: Secs 1.4 and 2.2 of the lecture note
• Lecture 2, Thu March 23: Diffraction of light off a disk, Sec 3.1
• Lecture 3, Mon March 27: Eikonal approximation in potential scattering, Sec 3.2
• Lecture 4, Thu March 30: Hybrid formalism for proton-nucleus collisions, Sec 3.3
• Easter break
• Lecture 5, Thu April 13: the analytical S-matrix, Sec 2.1
• Lecture 6, Mon April 17: two-gluon exchange, Sec. 2.3
• Lecture 7, Thu April 20: the Lipatov vertex, Sec 2.4
• Lecture 8, Mon April 24: the BFKL equation, Sec. 2.5
• Lecture 9, Thu April 27: DIS and dipole picture of DIS, Sec 4.1
• Lecture 10, Thu May 4: LCPT and the virtual photon light cone wavefunction Sec 4.2
• Lecture 11, Mon May 8: the BK equation, Sec. 4.3
• Lecture 12, Thu May 11: Gluon saturation and the CGC, Sec. 5.1
• No lectures in the week of May 15th
• Lecture 13, Mon May 22: Heavy ion collisions and the Glasma, Sec. 5.2
• Lecture 14, Wed May 24 (note exceptional time! FYS5), plan: Bottom-up thermalization in a heavy ion collision, Sec. 5.3

Exercises

1. Set 1, deadline Wed April 12 at 18h EET, questions
2. Set 2, deadline Wed April 26 at 18h EET questions [small typo corrected, hopefully, 17.4.]
3. Set 3, deadline Wed May 10 at 18h EET questions
4. Set 4, deadline Thu June 8 at 18h EET questions (corrected)

Exercise coworking sessions

• Monday April 3, 14-16
• Monday April 24, 10-12, exceptionally in FYS5
• Monday May 8, 10-12
• Monday June 6, 14-16

Exam