Regular Article - Experimental Physics
CGC/saturation approach: re-visiting the problem of odd harmonics in angular correlations
Department of Particle Physics, School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Science, Tel Aviv University, 69978, Tel Aviv, Israel
2 Departemento de Física, Centro Científico- Tecnológico de Valparaíso, Universidad Técnica Federico Santa María, Avda. Espana 1680, Casilla 110-V, Valparaíso, Chile
Accepted: 15 September 2018
Published online: 28 September 2018
In this paper we demonstrate that the selection of events with different multiplicities of produced particles, leads to the violation of the azimuthal angular symmetry, . We find for LHC and lower energies, that this violation can be so large for the events with multiplicities , where is the mean multiplicity, that it leads to almost no suppression of , with odd n. However, this can only occur if the typical size of the dipole in DIS with a nuclear target is small, or , where is the saturation momentum of the nucleus at . In the case of large sizes of dipoles, when , we show that for odd n. Hadron-nucleus scattering is discussed.
© The Author(s), 2018