Investigation of ADD model of extra dimensions via photoproduction processes at the CERN large hadron collider

In this work, the phenomenology of the ADD model of extra dimensions, which suggest solution to the hierarchy problem in Standard Model, has been studied. Extra dimensional model has been examined via the following processes: pp→pγp→pγqX, pp→pγp→pγgX, pp→pγp→pqGX, pp→pγγp→pl^+ l^- p, pp→pγγp→pW^+ Wp. During the numerical calculation different forward dedector acceptances have been taken into consideration. Sensitivity limits on the MD parameter of the ADD model have been obtained at the 95% confidence level. Finally, the obtained limits on the ADD model parameter have been compared with the current experimental bounds provided by the ATLAS and the CMS collaborations. According to our results, these processes have a high potential for investigation of the ADD model.