Search for decays of the 125 GeV Higgs boson into a Z boson and a ρ or ϕ meson
Authors
Sirunyan, A. M.Tumasyan, A.
Adam, W.
Ambrogi, F.
Bergauer, T.
Adžić, Petar
Ćirković, Predrag
Đorđević, Miloš
Milenović, Predrag
Milošević, Jovan
Stojanović, Milan
Contributors
CMS CollaborationArticle (Published version)
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Decays of the 125 GeV Higgs boson into a Z boson and a ρ0(770) or ϕ(1020) meson are searched for using proton-proton collision data collected by the CMS experiment at the LHC at s $$ \sqrt{s} $$ = 13 TeV. The analysed data set corresponds to an integrated luminosity of 137 fb −1. Events are selected in which the Z boson decays into a pair of electrons or a pair of muons, and the ρ and ϕ mesons decay into pairs of pions and kaons, respectively. No significant excess above the background model is observed. As different polarization states are possible for the decay products of the Z boson and ρ or ϕ mesons, affecting the signal acceptance, scenarios in which the decays are longitudinally or transversely polarized are considered. Upper limits at the 95% confidence level on the Higgs boson branching fractions into Zρ and Zϕ are determined to be 1.04–1.31% and 0.31–0.40%, respectively, where the ranges reflect the considered polarization scenarios; these values are 740–940 and 730–9...50 times larger than the respective standard model expectations. These results constitute the first experimental limits on the two decay channels.
Source:
Journal of High Energy Physics, 2020, 2020, 11, 1-42Note:
- CMS Collaboration (ukupan broj autora: 2384)
DOI: 10.1007/JHEP11(2020)039
ISSN: 1029-8479
WoS: 000593750300001
Scopus: 2-s2.0-85095855214
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VinčaTY - JOUR AU - Sirunyan, A. M. AU - Tumasyan, A. AU - Adam, W. AU - Ambrogi, F. AU - Bergauer, T. AU - Adžić, Petar AU - Ćirković, Predrag AU - Đorđević, Miloš AU - Milenović, Predrag AU - Milošević, Jovan AU - Stojanović, Milan PY - 2020 UR - https://vinar.vin.bg.ac.rs/handle/123456789/9738 AB - Decays of the 125 GeV Higgs boson into a Z boson and a ρ0(770) or ϕ(1020) meson are searched for using proton-proton collision data collected by the CMS experiment at the LHC at s $$ \sqrt{s} $$ = 13 TeV. The analysed data set corresponds to an integrated luminosity of 137 fb −1. Events are selected in which the Z boson decays into a pair of electrons or a pair of muons, and the ρ and ϕ mesons decay into pairs of pions and kaons, respectively. No significant excess above the background model is observed. As different polarization states are possible for the decay products of the Z boson and ρ or ϕ mesons, affecting the signal acceptance, scenarios in which the decays are longitudinally or transversely polarized are considered. Upper limits at the 95% confidence level on the Higgs boson branching fractions into Zρ and Zϕ are determined to be 1.04–1.31% and 0.31–0.40%, respectively, where the ranges reflect the considered polarization scenarios; these values are 740–940 and 730–950 times larger than the respective standard model expectations. These results constitute the first experimental limits on the two decay channels. T2 - Journal of High Energy Physics T1 - Search for decays of the 125 GeV Higgs boson into a Z boson and a ρ or ϕ meson VL - 2020 IS - 11 SP - 1 EP - 42 DO - 10.1007/JHEP11(2020)039 ER -
@article{ author = "Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan", year = "2020", abstract = "Decays of the 125 GeV Higgs boson into a Z boson and a ρ0(770) or ϕ(1020) meson are searched for using proton-proton collision data collected by the CMS experiment at the LHC at s $$ \sqrt{s} $$ = 13 TeV. The analysed data set corresponds to an integrated luminosity of 137 fb −1. Events are selected in which the Z boson decays into a pair of electrons or a pair of muons, and the ρ and ϕ mesons decay into pairs of pions and kaons, respectively. No significant excess above the background model is observed. As different polarization states are possible for the decay products of the Z boson and ρ or ϕ mesons, affecting the signal acceptance, scenarios in which the decays are longitudinally or transversely polarized are considered. Upper limits at the 95% confidence level on the Higgs boson branching fractions into Zρ and Zϕ are determined to be 1.04–1.31% and 0.31–0.40%, respectively, where the ranges reflect the considered polarization scenarios; these values are 740–940 and 730–950 times larger than the respective standard model expectations. These results constitute the first experimental limits on the two decay channels.", journal = "Journal of High Energy Physics", title = "Search for decays of the 125 GeV Higgs boson into a Z boson and a ρ or ϕ meson", volume = "2020", number = "11", pages = "1-42", doi = "10.1007/JHEP11(2020)039" }
Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M.. (2020). Search for decays of the 125 GeV Higgs boson into a Z boson and a ρ or ϕ meson. in Journal of High Energy Physics, 2020(11), 1-42. https://doi.org/10.1007/JHEP11(2020)039
Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Đorđević M, Milenović P, Milošević J, Stojanović M. Search for decays of the 125 GeV Higgs boson into a Z boson and a ρ or ϕ meson. in Journal of High Energy Physics. 2020;2020(11):1-42. doi:10.1007/JHEP11(2020)039 .
Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, Petar, Ćirković, Predrag, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, Stojanović, Milan, "Search for decays of the 125 GeV Higgs boson into a Z boson and a ρ or ϕ meson" in Journal of High Energy Physics, 2020, no. 11 (2020):1-42, https://doi.org/10.1007/JHEP11(2020)039 . .