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FASER entering uncharted territory: the first result of dark photon search and the first observation of collider neutrinos

2023-09-01 11:00 - 12:00

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【Abstract】

FASER or the ForwArd Search ExpeRiment is a novel approach to exploit proton-proton collisions for discovery of weakly coupling light long-lived dark sector particles in the phase-space which no current experiment has access to and collider-originated neutrino measurements at the TeV energy scale. The detector is located at the LHC in the far-forward region 480 m from the ATLAS interaction point. This talk will present FASER’s first physics results from a search for dark photons decaying to an electron-positron pair and the first observation of collider neutrinos. Both results are using a dataset corresponding to an integrated luminosity of 27.0 fb^{−1} collected at center-of-mass energy √s=13.6 TeV in 2022 in LHC Run 3. This talk will also discuss upgrade of the detector and new ideas about FASER2 and a future Forward Physics Facility to deepen understanding forward production physics in LHC collisions.