Speaker
Description
In this contribution I would like to report on our recent findings [1] regarding the exclusive eta_c production in e+p and e+A collisions that is sensitive to the Odderon. We are working within the framework of Color Glass Condensate applicable at the high energies that would be reached at future electron ion colliders. The Odderon distribution at small-x is found by explicitly solving the Balitsky-Kovchegov equation with running coupling corrections. For the initial condition for proton targets we are using the very recent quark light-cone wave function based model from [2], while for the nuclei we are using the semi-classical initial condition from [3]. Our findings are:
-
The Odderon component of the cross section on a proton target at low momentum transfers is found to be dominated by the Primakoff component. Thanks to the Landshoff mechanism [4] the Odderon cross section shows an almost flat behavior in the high-t region reaching above the Primakoff component.
-
Considering instead exclusive etac production off a neutron target the Odderon distribution can be probed even at small-t thanks to a significant suppression of the Primakoff component.
-
Finally for nuclear targets, the multiple scattering effect leads to a shift in the diffractive pattern of the Odderon cross section with respect to the Primakoff process that could be used as a signal to detect the Odderon.
[1] SB, Horvatic, Kaushik, Vivoda, 2306.10626
[2] Dumitru, Mantysaari, Paatelainen, Phys. Rev. D 107 (2023) 1, L011501
[3] Jeon, Venugopalan, Phys. Rev. D 71 (2005) 125003
[4] Donnachie, Landshoff, Z. Phys. C 2 (1979) 55, Z.Phys.C 2 (1979) 372 (erratum)
