30-31 July 2018
Instituto de Física da Universidade de São Paulo
America/Sao_Paulo timezone
Evento comemorativo dos 10 anos da Rede Nacional de Física de Altas Energias

Investigations of the photo-production of low- and high-mass systems with the CMS detector

30 Jul 2018, 11:00
15m
Auditório Novo 1 (Instituto de Física da Universidade de São Paulo)

Auditório Novo 1

Instituto de Física da Universidade de São Paulo

Análise de Dados Análise de Dados

Speaker

Gustavo Gil Da Silveira (Universidade do Estado do Rio de Janeiro (BR))

Description

The high-energy proton-proton collisions at the LHC can be used to investigate the electromagnetic interactions as a photon collider. Such production mechanism considers the long-range interactions via photon fusion, which allowed the CMS Collaboration to study the two-photon production of dileptons and dibosons at 7 and 8 TeV. In particular, the kinematics accessible by the CMS detector also provides the means to investigate high-order photon interactions, such that the light by light scattering in heavy-ion collisions. As a complementary production mechanism, the photon-proton interaction is an interesting way to study the elastic and nonelastic production of resonances, like vector mesons and vector bosons. In this case, the diffractive interaction by Pomeron exchange is employed to describe the colorless interaction between the photon and the colliding proton. The latest results on photo-production of resonances at CMS are reported, presenting the estimations for low- and high-mass channels in proton-proton and proton-Lead collisions. These results include the comparison of the estimated photon-proton cross section to the results from other experiments.

Primary authors

Gustavo Gil Da Silveira (Universidade do Estado do Rio de Janeiro (BR)) Miguel Medina Jaime (Universidade do Estado do Rio de Janeiro (BR))

Presentation Materials