Beyond-Eikonal Methods in High-Energy Scattering

May 20, 2024, 8:15 AM → May 24, 2024, 7:00 PM Europe/Rome

Aula Renzo Leonardi (ECT*)

Alina Czajka (National Center for Nuclear Research), Jamal Jalilian-Marian (Baruch College, CUNY), Yuri Kovchegov (The Ohio State University)

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The proposed workshop is dedicated to studying small-x physics in the beyond the eikonal approximation, that is, concentrating on the phenomena suppressed by one or more powers of Bjorken x which are usually neglected in the traditional eikonal small-x physics. These include questions about the proton spin structure and the spin puzzle at small x, involving the spin-dependent PDFs and TMDs, along with the power-of-x corrections to the eikonal scattering on a nucleus, which are enhanced by the powers of the atomic number of a large nucleus and are, therefore, important. All these questions are central to the physics to be probed at the future Electron-Ion Collider (EIC). Attempts at unifying large-x and small-x evolution will also be discussed.

 

Keynote speakers:

Tolga Altinoluk (National Centre for Nuclear Research)

Ian Balitsky (Jefferson Laboratory, Old Dominion University)

Guillaume Beuf (National Centre for Nuclear Research)

Giovanni Chirilli (University of Salento)

Yoshitaka Hatta (Brookhaven National Laboratory)

Yacine Mehtar-Tani (Brookhaven National Laboratory)

Vladimir Skokov (North Carolina State University, Brookhaven National Laboratory)

Bowen Xiao (The Chinese University of Hong Kong)

Feng Yuan (Lawrence Berkeley National Laboratory)

 

Monday, May 20

8:15 AM → 9:15 AM Registration

9:15 AM → 12:00 PM Morning Session: Unpolarized Sub-Eikonal

9:15 AM Welcome

9:30 AM Gluon-target scattering at next-to-eikonal accuracy

Speaker: Tolga Altinoluk (National Centre for Nuclear Research (NCBJ))

10:15 AM Discussion

10:30 AM Coffee Break

11:00 AM Inclusive DIS at next-to-eikonal order

Speaker: Swaleha Mulani (National Centre for Nuclear Research(NCBJ), Warsaw, Poland)

11:45 AM Discussion

12:00 PM → 2:00 PM Lunch Break

2:00 PM → 4:30 PM Afternoon Session: Unpolarized Sub-Eikonal

2:00 PM Twist 2 and 3 gluon TMDs from back-to-back DIS dijets at NEik accuracy

Speaker: Guillaume Beuf (University of Jyväskylä)

2:45 PM Discussion

3:00 PM Coffee Break

3:30 PM Non-eikonal effects in dijet production at the Electron-Ion Collider

Speaker: Pedro Augusto Agostini Infante (IGFAE)

4:15 PM Discussion

Tuesday, May 21

9:30 AM → 12:00 PM Morning Session: Unpolarized Sub-Eikonal

9:30 AM Sudakov Resummation in Small-x Physics

Speaker: Feng Yuan (Lawrence Berkeley National Laboratory)

10:15 AM Discussion

10:30 AM Coffee Break

11:00 AM Sub-eikonal corrections to scattering amplitudes at high energy

Speaker: Giovanni Antonio Chirilli (University of Regensburg)

11:45 AM Discussion

12:00 PM → 2:00 PM Lunch Break

2:00 PM → 4:30 PM Afternoon Session: Unpolarized Sub-Eikonal/Spin

2:00 PM Precision Study of Gluon Saturation: Experimental Analysis versus Theoretical Approach

Speaker: Bowen Xiao (CUHK-Shenzhen)

2:45 PM Discussion

3:00 PM Coffee Break

3:30 PM Small-x helicity phenomenology in DIS and SIDIS

Speaker: Daniel Adamiak (Jefferson Lab)

4:15 PM Discussion

Wednesday, May 22

9:30 AM → 12:00 PM Morning Session: Spin

9:30 AM Spin-orbit correlation at small-x

Speaker: Yoshitaka Hatta (BNL)

10:15 AM Discussion

10:30 AM Coffee Break

11:00 AM Double-Spin Asymmetries in Polarized p+p Collisions and kT Factorization at Small x

Speaker: Ming Li (The Ohio State University)

11:45 AM Discussion

12:00 PM → 2:00 PM Lunch Break

2:00 PM → 4:30 PM Afternoon Session: Spin

2:00 PM Leading-Twist Quark TMDs at Small-x

Speaker: M Gabriel Santiago (Center for Nuclear Femtography)

2:45 PM Discussion

3:00 PM Coffee Break

3:30 PM Valence-Quark Picture for Proton as Initial Condition for High-Energy Helicity-Dependent Processes

Speaker: Yossathorn Tawabutr (University of Jyväskylä)

4:15 PM Discussion

7:00 PM → 10:00 PM Conference Dinner

Address:
Restaurant Orso Grigio,
Vicolo degli Orti 19,
38122 Trento

Thursday, May 23

9:30 AM → 12:00 PM Morning Session: Large-x and Small-x

9:30 AM Rapidity-only TMD factorization

Speaker: Ian Balitsky (JLab/ODU)

10:15 AM Discussion

10:30 AM Coffee Break

11:00 AM TMD factorization bridging large and small x

Speaker: Vladimir Skokov (North Carolina State University)

11:45 AM Discussion

12:00 PM → 2:00 PM Lunch Break

2:00 PM → 4:30 PM Afternoon Session: Large-x and Small-x

2:00 PM TBA

Speaker: Alexander Kovner (University of Connecticut)

2:45 PM Discussion

3:00 PM Coffee Break

3:30 PM Quantum structure of the 3D gluon distribution at high energy

Speaker: Yacine Mehtar-Tani (BNL)

4:15 PM Discussion

Friday, May 24

9:30 AM → 12:00 PM Morning Session: Related Topics

9:30 AM Diffractive jet production in photon-nucleus interactions

Speaker: Dionysios Triantafyllopoulos (ECT*, Italy)

10:15 AM Discussion

10:30 AM Coffee Break

11:00 AM Efficient computation of high-order cusp anomalous dimensions in the string-inspired worldline formulation

Speaker: Xabier Feal (IGFAE)

11:45 AM Discussion

12:00 PM → 2:00 PM Lunch Break

2:00 PM → 5:30 PM Afternoon Session: Related Topics

2:00 PM TBA

Speaker: Michael Lublinsky

2:45 PM Discussion

3:00 PM Coffee Break

3:30 PM TBA

Speaker: Florian Cougoulic (University of Santiago de Compostela, IGFAE)

4:15 PM Discussion

4:30 PM Incoherent diffractive dijet production and gluon Bose enhancement in the nuclear wave function

Speaker: Tiyasa Kar (North Carolina State University)

5:15 PM Discussion