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Constraints on anomalous HVV couplings from the production of Higgs bosons decaying to ? lepton pairs

Abstract: A study is presented of anomalous HVV interactions of the Higgs boson, including its CP properties. The study uses Higgs boson candidates produced mainly in vector boson fusion and gluon fusion that subsequently decay to a pair of ? leptons. The data were recorded by the CMS experiment at the LHC in 2016 at a center-of-mass energy of 13 TeV and correspond to an integrated luminosity of 35.9 fb-1 . A matrix element technique is employed for the analysis of anomalous interactions. The results are combined with those from the H?4? decay channel presented earlier, yielding the most stringent constraints on anomalous Higgs boson couplings to electroweak vector bosons expressed as effective cross section fractions and phases: the CP -violating parameter fa3cos(?a3)=(0.00±0.27)×10-3 and the CP -conserving parameters fa2cos(?a2)=(0.08+1.04-0.21)×10-3 , f?1cos(??1)=(0.00+0.53-0.09)×10-3 , and fZ??1cos(?Z??1)=(0.0+1.1-1.3)×10-3 . The current dataset does not allow for precise constraints on CP properties in the gluon fusion process. The results are consistent with standard model expectations.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Phys. Rev. D 100, 112002 (2019)

Editorial: American Physical Society

 Fecha de publicación: 01/12/2019

Nº de páginas: 33

Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevD.100.112002

ISSN: 1550-7998,1550-2368,2470-0010,2470-0029

Url de la publicación: https://doi.org/10.1103/PhysRevD.100.112002