2013/10/30 by Fabio Bossi, Bossi, Fabio
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #Particle Detector Development and Performance
paper · pdf · doi:10.48550/arxiv.1310.8181
openalex publication_date 2013/10/30 · openalex created_date 2022/10/03 · openalex updated_date 2026/07/28
The existence of a new, photon-like, massive particle, the gamma' or dark\nphoton, is postulated in several extensions of the Standard Model. These models\nare often advocated to explain some recent puzzling astrophysical observations,\nas well as to solve the unsofar unexplained deviation between the measured and\ncalculated values of the muon anomaly. Dark photons can be produced at e+e-\ncolliders both in continuum events and in vector meson transitions and can\neventually decay into an electron-positron pair. For a proper choice of the\nparameters of the theory, a \γ' can have a relatively long lifetime and\ncan therefore be observed as an e+e- vertex well separated by the primary\ninteraction point. This case is discussed in reference to very high luminosity≠+e- colliders either in construction or under study in several laboratories in\nthe world. It is shown that a search strategy based on the detection of\ndisplaced vertices can be in principle very effective in covering a rather wide\nand to date unexplored region of the theoretical parameters space.\n