Sar WorS 2025 - 4th Sardinian Workshop on Spin

Session

TMD description of quarkonium production

11 Jun 2025, 09:10

Conveners

TMD description of quarkonium production

• Cristian Pisano (Istituto Nazionale di Fisica Nucleare)

5. cos 2 phi asymmetry in almost back-to-back production of J/\psi and jet at EIC and effect of TMD evolution

Asmita Mukherjee (Physics Department, IIT Bombay)

11/06/2025, 09:10

A back-to-back semi-inclusive J/ψ- jet production is a promising process to study gluon transverse momentum distribution (TMD) at the future electron-ion collider. A back-to-back configuration allows a higher transverse momentum for J/\psi We present an extension of a previous work where we studied cos 2φ azimuthal asymmetry within the TMD factorization framework for this process. We present...

15. TMD shape function and its effect in J/ψ photo- and electroproduction

Samuel F. Romera (University of the Basque Country)

11/06/2025, 09:45

In this talk, I present predictions for the unpolarized differential cross-section of J/ψ electroproduction at the Electron-Ion Collider (EIC) in the low transverse momentum region. I also compare with the experimental data for photoproduction at HERA. The calculation was performed at next-to-leading order (NLO) in the hard function and resummed at next-to-next-to-leading logarithmic accuracy...

19. Gluon TMDs from quarkonium production

Nanako Kato (Istituto Nazionale di Fisica Nucleare)

11/06/2025, 10:20

Extraction of observables sensible to gluon TMDs is one of the main goals of many proposed high-energy experiments. In this talk, I will present results for the production of C-even quarkonium states in proton-proton collisions. The quarkonium formation mechanism is described within the framework of Non-Relativistic QCD (NRQCD). Our computation for the cross sections incorporates the...