Search for heavy resonances decaying into a vector boson and a Higgs boson in final states with charged leptons, neutrinos, and b quarks

CMS; Bakhshiansohi, Hamed; Beluffi, Camille; Bondu, Olivier; Brochet, Sébastien; Bruno, Giacomo; Caudron, Adrien; de Visscher, Simon; Delaere, Christophe; Delcourt, Martin; François, Brieuc; Giammanco, Andrea; Jafari, Abideh; Jez, Pavel; Komm, Matthias; Lemaitre, Vincent; Magitteri, Alessio; Mertens, Alexandre; Musich, Marco; Nuttens, Claude

doi:10.1016/j.physletb.2017.02.040

Search for heavy resonances decaying into a vector boson and a Higgs boson in final states with charged leptons, neutrinos, and b quarks

CMS

;

Bakhshiansohi, Hamed

;

Beluffi, Camille

;

Bondu, Olivier

;

Wertz, Sébastien

;et.al.

(2017) Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. B768, p. 137-162 (2017)

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Authors

CMSUCLouvain
Author
Bakhshiansohi, HamedUCLouvain
Author
Beluffi, CamilleUCLouvain
Author
Bondu, OlivierUCLouvain
Author
Brochet, SébastienUCLouvain
Author
Bruno, GiacomoUCLouvain
Author
Caudron, AdrienUCLouvain
Author
de Visscher, SimonUCLouvain
Author
Delaere, ChristopheUCLouvain
Author
Delcourt, MartinUCLouvain
Author
François, BrieucUCLouvain
Author
Giammanco, AndreaUCLouvain
Author
Jafari, AbidehUCLouvain
Author
Jez, PavelUCLouvain
Author
Komm, MatthiasUCLouvain
Author
Lemaitre, VincentUCLouvain
Author
Magitteri, AlessioUCLouvain
Author
Mertens, AlexandreUCLouvain
Author
Musich, MarcoUCLouvain
Author
Nuttens, ClaudeUCLouvain
Author
Piotrzkowski, KrzysztofUCLouvain
Author
Quertenmont, LoïcUCLouvain
Author
Selvaggi, MicheleUCLouvain
Author
Vidal Maroño, MiguelUCLouvain
Author
Wertz, SébastienUCLouvain
Author
et. al.

Abstract

A search for heavy resonances decaying to a Higgs boson and a vector boson is presented. The analysis is performed using data samples collected in 2015 by the CMS experiment at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to integrated luminosities of 2.2-2.5 inverse femtobarns. The search is performed in channels in which the vector boson decays into leptonic final states (Z to nu nu, W to l nu, and Z to l l, with l = e, mu), while the Higgs boson decays to collimated b quark pairs detected as a single massive jet. The discriminating power of a jet mass requirement and a b jet tagging algorithm are exploited to suppress the standard model backgrounds. The event yields observed in data are consistent with the background expectation. In the context of a theoretical model with a heavy vector triplet, a resonance with mass less than 2 TeV is excluded at 95% confidence level. The results are also interpreted in terms of limits on the parameters of the model, improving on the reach of previous searches.

Affiliations

UCLouvainSST/IRMP - Institut de recherche en mathématique et physique

Citations

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CMS, Bakhshiansohi, H., Beluffi, C., Bondu, O., Brochet, S., Bruno, G., Caudron, A., de Visscher, S., Delaere, C., Delcourt, M., François, B., Giammanco, A., Jafari, A., Jez, P., Komm, M., Lemaitre, V., Magitteri, A., Mertens, A., Musich, M., et al. (2017). Search for heavy resonances decaying into a vector boson and a Higgs boson in final states with charged leptons, neutrinos, and b quarks. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, B768, 137-162. https://doi.org/10.1016/j.physletb.2017.02.040 (Original work published 2017)