# 3rd International Turkey-Iran Joint Conference on LHC Physics

Jun 10 – 15, 2019
Marmara University Sultanahmet Campus
Europe/Istanbul timezone

## First evidence of single top production in association with a photon in proton-proton collisions at \sqrt{13} TeV

Jun 10, 2019, 10:50 AM
40m
Marmara University Sultanahmet Campus

İstanbul

### Speaker

Seyed Mohsen Etesami (Institute for Research in Fundamental Sciences (IR))

### Description

In this analysis, the first evidence of events consistent with the production of a single top quark in association with a photon is reported. The analysis is based on proton-proton collisions at s√= 13 TeV and recorded by the CMS experiment in 2016, corresponding to an integrated luminosity of 35.9 fb−1. Events are selected by requiring the presence of a muon (μ), a photon (γ), an imbalance in transverse momentum from an undetected neutrino (ν), and at least two jets (j) of which exactly one is identified as associated to the hadronization of a b quark. An excess above the background-only hypothesis is observed, with a significance of 4.4 standard deviations, which is consistent with the SM prediction

### Presentation materials

 turky2019.pdf turky2019.pptx