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Pregled bibliografske jedinice broj: 1010481

Search for tt¯H production in the H→bb decay channel with leptonic tt decays in proton-proton collisions at s√=13


(CMS Collaboration) Sirunyan, Albert; ...; Đurić, Senka; Lelas, Damir; Godinović, Nikola; Puljak, Ivica; Šćulac, Toni; Mesić, Benjamin; Šuša, Tatjana; Kovač, Marko et al.
Search for tt¯H production in the H→bb decay channel with leptonic tt decays in proton-proton collisions at s√=13 // The Journal of high energy physics, 03 (2019), 026, 62 doi:10.1007/JHEP03(2019)026 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 1010481 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Search for tt¯H production in the H→bb decay channel with leptonic tt decays in proton-proton collisions at s√=13
(Search for tt¯H production in the H→bb decay channel with leptonic tt decays in proton-proton collisions at s√=13 TeV)

Autori
Sirunyan, Albert ; ... ; Đurić, Senka ; Lelas, Damir ; Godinović, Nikola ; Puljak, Ivica ; Šćulac, Toni ; Mesić, Benjamin ; Šuša, Tatjana ; Kovač, Marko ; Ferenček, Dinko ; Antunović, Željko ; Starodumov, Andrey ; Brigljević, Vuko ; Luetić, Jelena ; Kadija, Krešo ; ... ; Woods, Nate

Kolaboracija
CMS Collaboration

Izvornik
The Journal of high energy physics (1126-6708) 03 (2019); 026, 62

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
High energy physics ; Experimental particle physics ; LHC ; CMS ; Standard Model

Sažetak
A search is presented for the associated production of a standard model Higgs boson with a top quark-antiquark pair (tt¯H), in which the Higgs boson decays into a b quark-antiquark pair, in proton-proton collisions at a centre-of-mass energy s√=13 TeV. The data correspond to an integrated luminosity of 35.9 fb−1 recorded with the CMS detector at the CERN LHC. Candidate tt¯H events are selected that contain either one or two electrons or muons from the tt¯ decays and are categorised according to the number of jets. Multivariate techniques are employed to further classify the events and eventually discriminate between signal and background. The results are characterised by an observed tt¯H signal strength relative to the standard model cross section, μ = σ/σSM, under the assumption of a Higgs boson mass of 125 GeV. A combined fit of multivariate discriminant distributions in all categories results in an observed (expected) upper limit on μ of 1.5 (0.9) at 95% confidence level, and a best fit value of 0.72 ± 0.24(stat) ± 0.38(syst), corresponding to an observed (expected) signal significance of 1.6 (2.2) standard deviations above the background-only hypothesis.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Ustanove
Fakultet elektrotehnike, strojarstva i brodogradnje, Split,
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Split

Citiraj ovu publikaciju

(CMS Collaboration) Sirunyan, Albert; ...; Đurić, Senka; Lelas, Damir; Godinović, Nikola; Puljak, Ivica; Šćulac, Toni; Mesić, Benjamin; Šuša, Tatjana; Kovač, Marko et al.
Search for tt¯H production in the H→bb decay channel with leptonic tt decays in proton-proton collisions at s√=13 // The Journal of high energy physics, 03 (2019), 026, 62 doi:10.1007/JHEP03(2019)026 (međunarodna recenzija, članak, znanstveni)
(CMS Collaboration) (CMS Collaboration) Sirunyan, A., ..., Đurić, S., Lelas, D., Godinović, N., Puljak, I., Šćulac, T., Mesić, B., Šuša, T. & Kovač, M. (2019) Search for tt¯H production in the H→bb decay channel with leptonic tt decays in proton-proton collisions at s√=13. The Journal of high energy physics, 03, 026, 62 doi:10.1007/JHEP03(2019)026.
@article{article, year = {2019}, pages = {62}, DOI = {10.1007/JHEP03(2019)026}, chapter = {026}, keywords = {High energy physics, Experimental particle physics, LHC, CMS, Standard Model}, journal = {The Journal of high energy physics}, doi = {10.1007/JHEP03(2019)026}, volume = {03}, issn = {1126-6708}, title = {Search for tt¯H production in the H→bb decay channel with leptonic tt decays in proton-proton collisions at s√=13 TeV}, keyword = {High energy physics, Experimental particle physics, LHC, CMS, Standard Model}, chapternumber = {026} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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