New ATLAS group paper
January 12, 2023Collider Physics Group
The paper “Search for a new scalar resonance in flavour-changing neutral-current top-quark decays 𝒕 → 𝒒𝑿 (𝒒 = 𝒖, 𝒄), with 𝑿 → 𝒃𝒃bar, in proton-proton collisions at sqrt(s) = 13 TeV with the ATLAS detector” has been submitted to JHEP.
The paper provides stringent limits of O(10e-4) on the production and decay of a scalar particle from 20 to 160 GeV in flavour-changing neutral current top quark decays. It is the first time this analysis is done in a collider experiment.
The main authors are from IFAE and are Adrian Salvador, Martine Bosman, Aurelio Juste, Lluïsa Mir, Nicola Orlando and Imma Riu.
New positions in the IFAE Organization
January 16, 2023
Mario Martinez, ICREA professor at IFAE and head of the Gravitational Waves Group, is the new Director of the Experimental Division and takes on the role of IFAE Deputy Director. Martine Bosman, retiring Director of the Experimental Division, assumes the status of IFAE Emeritus.