Search for invisible Higgs boson decays in vector boson fusion at √s = 13 TeV with the ATLAS detector

Miucci, Antonio; Merlassino, Claudia; Haug, Sigve; Weber, Michael; Anders, John Kenneth; Beck, Hans Peter; Ereditato, Antonio; Mullier, Geoffrey André Adrien; Rimoldi, Marco; Weston, Thomas Daniel (2019). Search for invisible Higgs boson decays in vector boson fusion at √s = 13 TeV with the ATLAS detector. Physics letters. B, 793, pp. 499-519. Elsevier 10.1016/j.physletb.2019.04.024

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We report a search for Higgs bosons that are produced via vector boson fusion and subsequently decay into invisible particles. The experimental signature is an energetic jet pair with invariant mass of O(1) TeV and O(100) GeV missing transverse momentum. The analysis uses 36.1fb−1of ppcollision data at √s=13 TeV recorded by the ATLAS detector at the LHC. In the signal region the 2252 observed events are consistent with the background estimation. Assuming a 125 GeV scalar particle with Standard Model cross sections, the upper limit on the branching fraction of the Higgs boson decay into invisible particles is 0.37 at 95% confidence level where 0.28 was expected. This limit is interpreted in Higgs portal models to set bounds on thewimp–nucleon scattering cross section. We also consider invisible decays of additional scalar bosons with masses up to 3 TeV for which the upper limits on the cross section times branching fraction are in the range of 0.3–1.7 pb.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Miucci, Antonio; Merlassino, Claudia; Haug, Sigve; Weber, Michael; Anders, John Kenneth; Beck, Hans Peter; Ereditato, Antonio; Mullier, Geoffrey André Adrien; Rimoldi, Marco and Weston, Thomas Daniel

Subjects:

500 Science > 530 Physics

ISSN:

0370-2693

Publisher:

Elsevier

Language:

English

Submitter:

BORIS Import LHEP

Date Deposited:

22 Jun 2020 09:56

Last Modified:

22 Jun 2020 10:03

Publisher DOI:

10.1016/j.physletb.2019.04.024

Additional Information:

Kollaboration - Es sind nur die Berner AutorInnen namentlich erwaehnt; The ATLAS collaboration

BORIS DOI:

10.7892/boris.143636

URI:

https://boris.unibe.ch/id/eprint/143636

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