Dark matter particles, if sufficiently light, may be produced in decays of the Higgs boson. This Letter presents a statistical combination of searches for H→invisible decays where H is produced according to the standard model via vector boson fusion, Z(ℓℓ)H, and W/Z(had)H, all performed with the ATLAS detector using 36.1 fb^-1 of pp collisions at a center-of-mass energy of sqrt[s]=13 TeV at the LHC. In combination with the results at sqrt[s]=7 and 8 TeV, an exclusion limit on the H→invisible branching ratio of 0.26(0.17_-0.05^+0.07) at 95% confidence level is observed (expected).
Combination of Searches for Invisible Higgs Boson Decays with the ATLAS Experiment / Aloisio, Alberto; Alberto Pppp, Alviggi; Mariagrazia Pppp, Canale; Vincenzo Pppp Della, Pietra; Massimo Pppp, Merola; Leonardo Pppp, Conventi; Francesco Pppp, Rossi; Elvira Pppp, Carlino; Giampaolo Pppp De, Asmundis; Riccardo Pppp, Loffredo; Salvatore Pppp Di, Donato; Camilla Pppp, Doria; Alessandra Pppp, Iengo; Paolo Pppp, Izzo; Vincenzo Pppp, Perrella; Sabrina Pppp, Sekhniaidze; Givi Pppp, Cirotto; Francesco Pppp, Lavorgna; Marco Pppp, Giannini; Antonio Pppp, Massarotti; Paolo Pppp Atlas, Collaboration. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 122:23(2019), p. 231801. [10.1103/PhysRevLett.122.231801]
Combination of Searches for Invisible Higgs Boson Decays with the ATLAS Experiment
Aloisio;
2019
Abstract
Dark matter particles, if sufficiently light, may be produced in decays of the Higgs boson. This Letter presents a statistical combination of searches for H→invisible decays where H is produced according to the standard model via vector boson fusion, Z(ℓℓ)H, and W/Z(had)H, all performed with the ATLAS detector using 36.1 fb^-1 of pp collisions at a center-of-mass energy of sqrt[s]=13 TeV at the LHC. In combination with the results at sqrt[s]=7 and 8 TeV, an exclusion limit on the H→invisible branching ratio of 0.26(0.17_-0.05^+0.07) at 95% confidence level is observed (expected).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
