Doktorski seminar - Eric Andreas Vivoda

O B A V I J E S T

ERIC ANDREAS VIVODA

održat će znanstveni kolokvij (doktorski seminar) iz Fizike elementarnih čestica pod naslovom

Odderon Phenomenology at High Energies

At the leading order of Quantum Chromodynamics (QCD), the Odderon represents a C-odd, colorless, three-gluon exchange [1]. While its existence had long been conjectured, recent measurements of the difference between elastic pp and pp ̅ cross sections confirmed it with 5σ significance [2]. In this talk, I will present results from three studies that explore the Odderon’s role in high-energy QCD through different processes.
First, I will discuss the results from [3], where the Odderon contribution to the exclusive production of the η_c meson in ep and eA collisions was calculated at the energies accessible at the future Electron-Ion collider (EIC) [4]. Due to the heavy mass of charm quarks, and positive C-parity of η_c meson, this process is considered a golden probe for the Odderon in perturbative QCD.
Next, I will present findings from [5,6], where the Odderon contribution to Transverse Single Spin Asymmetry (TSSA) in pp and pA collisions was studied. The original idea that the Odderon could provide a necessary phase to generate TSSA was developed at the parton level in [7]. A substantial nuclear suppression (A^(-7\/6)) of the TSSA found in [7] motivated us to embed this mechanism at the level of Parton Distribution Functions [5,6] thus shedding new light on the measured nuclear dependence of TSSA at RHIC [8,9].

Seminar će se održati u srijedu 26. ožujka 2025. godine u 12:00 sati u predavaonici F-201 Fizičkog odsjeka Prirodoslovno-matematičkog fakulteta Sveučilišta u Zagrebu.

Pozivaju se studenti doktorskog studija Fizike, smjer Fizika elementarnih čestica, da prisustvuju seminaru, ako nisu spriječeni.

Voditelj smjera:

Izv. prof. dr. sc. Maro Cvitan, v. r.

References:
[1] L. Lukaszuk and B. Nicolescu, Lett. Nuovo Cim. 8, 405 (1973).
[2] TOTEM, D0, V. M. Abazov et al., Phys. Rev. Lett. 127, 062003 (2021).
[3] S. Benić, D. Horvatić, A. Kaushik and E. A. Vivoda, Phys. Rev D 108, 074005 (2023).
[4] A. Accardi, et al., Eur.Phys.J.A 52, 9, 268 (2016).
[5] S. Benić, D. Horvatić, A. Kaushik and E. A. Vivoda, Phys. Rev D 106, 114025 (2022).
[6] S. Benić, E. A. Vivoda, arXiv:2501.12847.
[7] Y. V. Kovchegov and M. D. Sievert, Phys. Rev. D 86, 034028 (2012).
[8] PHENIX Collaboration, C. Aidala et. al., Phys.Rev.Lett. 123, 122001 (2019).
[9] STAR Collaboration, J. Adam et. al., Phys.Rev.D 103, 072005 (2021).