Multiple photon production in double parton scattering at the LHC

8th International Workshop on Hadron Physics

Palota Da Silva, R.^1 ; Mariotto, C. Brenner^1 ; Goncalves, V.P.^2

Instituto de Matemática, Estatística e Física, Universidade Federal Do Rio Grande, Campus Carreiros, Av. Itália, km 8, Rio Grande, RS

CEP 96203-900, Brazil^1

Instituto de Física e Matemática, Universidade Federal de Pelotas, Caixa Postal 354, Pelotas, RS

CEP 96010-900, Brazil^2

关键词: Compton process;    Hadronic collisions;    Parton scattering;    Photon production;    Prompt photons;    Proton proton collisions;    Rapidity distribution;    The standard model;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/706/5/052028/pdf
DOI  :  10.1088/1742-6596/706/5/052028

来源: IOP

【 摘 要 】

The high density of gluons in the initial state of hadronic collisions at LHC implies that the probability of multiple parton interactions within one proton-proton collision increases. In particular, the probability of having two or more hard interactions in a collision is not significantly suppressed with respect to the single interaction probability. In this contribution we study for the first time the production of prompt photons in double parton scattering processes. In particular, we estimate the rapidity distribution for the double Compton process, which leads to two photons plus two jets in the final state. Besides, we study the production of three and four photons in the final state, which are backgrounds to physics beyond the Standard Model.