Exclusive ηc production from small-x evolved Odderon at an electron-ion collider

Scientific paper - Original scientific paper

• Author: Sanjin Benić
• Author: Davor Horvatić
• Author: Abhiram Kaushik
• Author: Eric Andreas Vivoda
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

We compute exclusive 𝜂𝑐 production in high-energy electron-nucleon and electron-nucleus collisions that is sensitive to the odderon. In perturbative QCD the odderon is a 𝐶-odd color singlet consisting of at least three 𝑡-channel gluons exchanged with the target. By using the Color Glass Condensate effective theory our result describes the odderon exchange at the high-collision energies that would be reached at a future electron-ion collider. The odderon distribution is evolved to small-𝑥 using the Balitsky-Kovchegov evolution equation with running coupling corrections. We find that while at low momentum transfers 𝑡 the cross section off a proton is dominated by the Primakoff process, the odderon becomes relevant at larger momentum transfers of |𝑡|≥1.5  GeV2. We point that the odderon could also be extracted at low-𝑡 using neutron targets since the Primakoff component is strongly suppressed. In the case of nuclear targets, the odderon cross section becomes enhanced thanks to the mass number of the nuclear target. The gluon saturation effect induces a shift in the diffractive pattern with respect to the Primakoff process that could be used as a signal for the odderon.

• Keywords (english): Odderon; electron-ion collider
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Physical Review D
• Numbering: vol. 108, no. 7, 074005
• p-ISSN: 2470-0010
• e-ISSN: 2470-0029
• DOI: https://doi.org/10.1103/PhysRevD.108.074005
• URN:NBN: urn:nbn:hr:217:686273
• Publication: 2023-10
• Project: Number: UIP-2019-04-5332; Title (croatian): Gluonsko zasićenje u visoko energetskim proton-jezgra sudarima - istraživanje novih fenomenoloških smjernica; Title (english): Gluon saturation in high energy proton-nucleus collisions - exploring new phenomenological directions; Acronym: SAT-PHENO; Leader: Sanjin Benić; Jurisdiction: Croatia; Funding stream: Installation Research Projects
• Document URL: https://link.aps.org/doi/10.1103/PhysRevD.108.074005
• Type of resource: Text
• Access conditions: Open access
• Public note: Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3. Received 26 June 2023; accepted 6 September 2023; published 5 October 2023.
• Created on: 2024-07-19 11:41:19