2015/11/30 by Sara Khatibi, M. Mohammadi Najafabadi, Mojtaba Mohammadi Najafabadi
Physics and Astronomy · #Astrophysics #High-Energy Particle Collisions Research #Large Hadron Collider #Luminosity #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quantum Chromodynamics and Particle Interactions #Quark #Top quark #hep-ph
paper · pdf · doi:10.1016/j.nuclphysb.2016.06.009
published as Nucl.Phys. B909 (2016) 607-618 · 17 pages, 7 figures, an EDM analysis included in addition to the published version
openalex publication_date 2016/06/11 · arxiv created 2016/06/16 · arxiv updated 2016/06/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In this paper we show that the diphoton mass spectrum in proton–proton collisions at the LHC is sensitive to the top quark flavor changing neutral current in the vertices of tuγ and tcγ. The diphoton mass spectrum measured by the CMS experiment at the LHC at a center-of-mass energy of 8 TeV and an integrated luminosity of 19.5fb−1 is used as an example to set limits on these FCNC couplings. It is also shown that the angular distribution of the diphotons is sensitive to anomalous tuγ and tcγ couplings and it is a powerful tool to probe any value of the branching fraction of top quark rare decay to an up-type quark plus a photon down to the order of 10−4.