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

The CMS Collaboration

Research output: Contribution to journalArticleResearchpeer-review

5 Citations (Scopus)

Abstract

A search is presented for the associated production of a standard model Higgs boson with a top quark-antiquark pair (t t ¯ 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 t t ¯ H events are selected that contain either one or two electrons or muons from the t t ¯ 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 t t ¯ H signal strength relative to the standard model cross section, μ = σ/σ SM , 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.[Figure not available: see fulltext.].

Original languageEnglish
Article number26
Number of pages61
JournalJournal of High Energy Physics
Volume2019
Issue number3
DOIs
Publication statusPublished - 1 Mar 2019

Keywords

  • Hadron-Hadron scattering (experiments)
  • Higgs physics
  • Top physics

Cite this

@article{cd5160cb0452463bbf4ecd91fb0988df,
title = "Search for t t ¯ H production in the H → b b ¯ decay channel with leptonic t t ¯ decays in proton-proton collisions at √s=13 TeV",
abstract = "A search is presented for the associated production of a standard model Higgs boson with a top quark-antiquark pair (t t ¯ 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 t t ¯ H events are selected that contain either one or two electrons or muons from the t t ¯ 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 t t ¯ H signal strength relative to the standard model cross section, μ = σ/σ SM , 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.[Figure not available: see fulltext.].",
keywords = "Hadron-Hadron scattering (experiments), Higgs physics, Top physics",
author = "Sirunyan, {A. M.} and A. Tumasyan and W. Adam and F. Ambrogi and E. Asilar and T. Bergauer and J. Brandstetter and M. Dragicevic and J. Er{\"o} and {Escalante Del Valle}, A. and M. Flechl and R. Fr{\"u}hwirth and Ghete, {V. M.} and J. Hrubec and M. Jeitler and N. Krammer and I. Kr{\"a}tschmer and D. Liko and T. Madlener and I. Mikulec and N. Rad and H. Rohringer and J. Schieck and R. Sch{\"o}fbeck and M. Spanring and D. Spitzbart and A. Taurok and W. Waltenberger and J. Wittmann and Wulz, {C. E.} and M. Zarucki and V. Chekhovsky and V. Mossolov and {Suarez Gonzalez}, J. and {De Wolf}, {E. A.} and {Di Croce}, D. and X. Janssen and J. Lauwers and M. Pieters and {Van De Klundert}, M. and {Van Haevermaet}, H. and {Van Mechelen}, P. and {Van Remortel}, N. and {Abu Zeid}, S. and F. Blekman and J. D’Hondt and {De Bruyn}, I. and {De Clercq}, J. and K. Deroover and G. Flouris and D. Lontkovskyi and S. Lowette and I. Marchesini and S. Moortgat and L. Moreels and Q. Python and K. Skovpen and S. Tavernier and {Van Doninck}, W. and {Van Mulders}, P. and {Van Parijs}, I. and D. Beghin and B. Bilin and H. Brun and B. Clerbaux and {De Lentdecker}, G. and H. Delannoy and B. Dorney and G. Fasanella and L. Favart and R. Goldouzian and A. Grebenyuk and Kalsi, {A. K.} and T. Lenzi and J. Luetic and N. Postiau and E. Starling and L. Thomas and {Vander Velde}, C. and P. Vanlaer and D. Vannerom and Q. Wang and T. Cornelis and D. Dobur and A. Fagot and M. Gul and I. Khvastunov and D. Poyraz and C. Roskas and D. Trocino and M. Tytgat and W. Verbeke and B. Vermassen and M. Vit and N. Zaganidis and H. Bakhshiansohi and O. Bondu and S. Brochet and G. Bruno and C. Caputo and P. David and C. Delaere and M. Delcourt and B. Francois and A. Giammanco and G. Krintiras and V. Lemaitre and A. Magitteri and A. Mertens and M. Musich and K. Piotrzkowski and A. Saggio and {Vidal Marono}, M. and S. Wertz and J. Zobec and Alves, {F. L.} and Alves, {G. A.} and L. Brito and {Correa Martins Junior}, M. and {Correia Silva}, G. and C. Hensel and A. Moraes and Pol, {M. E.} and {Rebello Teles}, P. and {Belchior Batista Das Chagas}, E. and W. Carvalho and J. Chinellato and E. Coelho and {Da Costa}, {E. M.} and {Da Silveira}, {G. G.} and {De Jesus Damiao}, D. and {De Oliveira Martins}, C. and {Fonseca De Souza}, S. and H. Malbouisson and {Matos Figueiredo}, D. and {Melo De Almeida}, M. and {Mora Herrera}, C. and L. Mundim and H. Nogima and {Prado Da Silva}, {W. L.} and {Sanchez Rosas}, {L. J.} and A. Santoro and A. Sznajder and M. Thiel and {Tonelli Manganote}, {E. J.} and {Torres Da Silva De Araujo}, F. and {Vilela Pereira}, A. and S. Ahuja and Bernardes, {C. A.} and L. Calligaris and {Fernandez Perez Tomei}, {T. R.} and Gregores, {E. M.} and Mercadante, {P. G.} and Novaes, {S. F.} and Padula, {Sandra S.} and {Romero Abad}, D. and A. Aleksandrov and R. Hadjiiska and P. Iaydjiev and A. Marinov and M. Misheva and M. Rodozov and M. Shopova and G. Sultanov and A. Dimitrov and L. Litov and B. Pavlov and P. Petkov and W. Fang and X. Gao and L. Yuan and M. Ahmad and Bian, {J. G.} and Chen, {G. M.} and Chen, {H. S.} and M. Chen and Y. Chen and Jiang, {C. H.} and D. Leggat and H. Liao and Z. Liu and F. Romeo and Shaheen, {S. M.} and A. Spiezia and J. Tao and C. Wang and Z. Wang and E. Yazgan and H. Zhang and J. Zhao and Y. Ban and G. Chen and A. Levin and J. Li and L. Li and Q. Li and Y. Mao and Qian, {S. J.} and D. Wang and Z. Xu and Y. Wang and C. Avila and A. Cabrera and {Carrillo Montoya}, {C. A.} and {Chaparro Sierra}, {L. F.} and C. Florez and {Gonz{\'a}lez Hern{\'a}ndez}, {C. F.} and {Segura Delgado}, {M. A.} and B. Courbon and N. Godinovic and D. Lelas and I. Puljak and T. Sculac and Z. Antunovic and M. Kovac and V. Brigljevic and D. Ferencek and K. Kadija and B. Mesic and A. Starodumov and T. Susa and Ather, {M. W.} and A. Attikis and M. Kolosova and G. Mavromanolakis and J. Mousa and C. Nicolaou and F. Ptochos and Razis, {P. A.} and H. Rykaczewski and M. Finger and M. Finger and E. Ayala and {Carrera Jarrin}, E. and H. Abdalla and Abdelalim, {A. A.} and A. Mohamed and S. Bhowmik and {Carvalho Antunes De Oliveira}, A. and Dewanjee, {R. K.} and K. Ehataht and M. Kadastik and M. Raidal and C. Veelken and P. Eerola and H. Kirschenmann and J. Pekkanen and M. Voutilainen and J. Havukainen and J. Nash and {The CMS Collaboration}",
year = "2019",
month = "3",
day = "1",
doi = "10.1007/JHEP03(2019)026",
language = "English",
volume = "2019",
journal = "Journal of High Energy Physics",
issn = "1029-8479",
publisher = "Springer-Verlag London Ltd.",
number = "3",

}

Search for t t ¯ H production in the H → b b ¯ decay channel with leptonic t t ¯ decays in proton-proton collisions at √s=13 TeV. / The CMS Collaboration.

In: Journal of High Energy Physics, Vol. 2019, No. 3, 26, 01.03.2019.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Search for t t ¯ H production in the H → b b ¯ decay channel with leptonic t t ¯ decays in proton-proton collisions at √s=13 TeV

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Ambrogi, F.

AU - Asilar, E.

AU - Bergauer, T.

AU - Brandstetter, J.

AU - Dragicevic, M.

AU - Erö, J.

AU - Escalante Del Valle, A.

AU - Flechl, M.

AU - Frühwirth, R.

AU - Ghete, V. M.

AU - Hrubec, J.

AU - Jeitler, M.

AU - Krammer, N.

AU - Krätschmer, I.

AU - Liko, D.

AU - Madlener, T.

AU - Mikulec, I.

AU - Rad, N.

AU - Rohringer, H.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Spanring, M.

AU - Spitzbart, D.

AU - Taurok, A.

AU - Waltenberger, W.

AU - Wittmann, J.

AU - Wulz, C. E.

AU - Zarucki, M.

AU - Chekhovsky, V.

AU - Mossolov, V.

AU - Suarez Gonzalez, J.

AU - De Wolf, E. A.

AU - Di Croce, D.

AU - Janssen, X.

AU - Lauwers, J.

AU - Pieters, M.

AU - Van De Klundert, M.

AU - Van Haevermaet, H.

AU - Van Mechelen, P.

AU - Van Remortel, N.

AU - Abu Zeid, S.

AU - Blekman, F.

AU - D’Hondt, J.

AU - De Bruyn, I.

AU - De Clercq, J.

AU - Deroover, K.

AU - Flouris, G.

AU - Lontkovskyi, D.

AU - Lowette, S.

AU - Marchesini, I.

AU - Moortgat, S.

AU - Moreels, L.

AU - Python, Q.

AU - Skovpen, K.

AU - Tavernier, S.

AU - Van Doninck, W.

AU - Van Mulders, P.

AU - Van Parijs, I.

AU - Beghin, D.

AU - Bilin, B.

AU - Brun, H.

AU - Clerbaux, B.

AU - De Lentdecker, G.

AU - Delannoy, H.

AU - Dorney, B.

AU - Fasanella, G.

AU - Favart, L.

AU - Goldouzian, R.

AU - Grebenyuk, A.

AU - Kalsi, A. K.

AU - Lenzi, T.

AU - Luetic, J.

AU - Postiau, N.

AU - Starling, E.

AU - Thomas, L.

AU - Vander Velde, C.

AU - Vanlaer, P.

AU - Vannerom, D.

AU - Wang, Q.

AU - Cornelis, T.

AU - Dobur, D.

AU - Fagot, A.

AU - Gul, M.

AU - Khvastunov, I.

AU - Poyraz, D.

AU - Roskas, C.

AU - Trocino, D.

AU - Tytgat, M.

AU - Verbeke, W.

AU - Vermassen, B.

AU - Vit, M.

AU - Zaganidis, N.

AU - Bakhshiansohi, H.

AU - Bondu, O.

AU - Brochet, S.

AU - Bruno, G.

AU - Caputo, C.

AU - David, P.

AU - Delaere, C.

AU - Delcourt, M.

AU - Francois, B.

AU - Giammanco, A.

AU - Krintiras, G.

AU - Lemaitre, V.

AU - Magitteri, A.

AU - Mertens, A.

AU - Musich, M.

AU - Piotrzkowski, K.

AU - Saggio, A.

AU - Vidal Marono, M.

AU - Wertz, S.

AU - Zobec, J.

AU - Alves, F. L.

AU - Alves, G. A.

AU - Brito, L.

AU - Correa Martins Junior, M.

AU - Correia Silva, G.

AU - Hensel, C.

AU - Moraes, A.

AU - Pol, M. E.

AU - Rebello Teles, P.

AU - Belchior Batista Das Chagas, E.

AU - Carvalho, W.

AU - Chinellato, J.

AU - Coelho, E.

AU - Da Costa, E. M.

AU - Da Silveira, G. G.

AU - De Jesus Damiao, D.

AU - De Oliveira Martins, C.

AU - Fonseca De Souza, S.

AU - Malbouisson, H.

AU - Matos Figueiredo, D.

AU - Melo De Almeida, M.

AU - Mora Herrera, C.

AU - Mundim, L.

AU - Nogima, H.

AU - Prado Da Silva, W. L.

AU - Sanchez Rosas, L. J.

AU - Santoro, A.

AU - Sznajder, A.

AU - Thiel, M.

AU - Tonelli Manganote, E. J.

AU - Torres Da Silva De Araujo, F.

AU - Vilela Pereira, A.

AU - Ahuja, S.

AU - Bernardes, C. A.

AU - Calligaris, L.

AU - Fernandez Perez Tomei, T. R.

AU - Gregores, E. M.

AU - Mercadante, P. G.

AU - Novaes, S. F.

AU - Padula, Sandra S.

AU - Romero Abad, D.

AU - Aleksandrov, A.

AU - Hadjiiska, R.

AU - Iaydjiev, P.

AU - Marinov, A.

AU - Misheva, M.

AU - Rodozov, M.

AU - Shopova, M.

AU - Sultanov, G.

AU - Dimitrov, A.

AU - Litov, L.

AU - Pavlov, B.

AU - Petkov, P.

AU - Fang, W.

AU - Gao, X.

AU - Yuan, L.

AU - Ahmad, M.

AU - Bian, J. G.

AU - Chen, G. M.

AU - Chen, H. S.

AU - Chen, M.

AU - Chen, Y.

AU - Jiang, C. H.

AU - Leggat, D.

AU - Liao, H.

AU - Liu, Z.

AU - Romeo, F.

AU - Shaheen, S. M.

AU - Spiezia, A.

AU - Tao, J.

AU - Wang, C.

AU - Wang, Z.

AU - Yazgan, E.

AU - Zhang, H.

AU - Zhao, J.

AU - Ban, Y.

AU - Chen, G.

AU - Levin, A.

AU - Li, J.

AU - Li, L.

AU - Li, Q.

AU - Mao, Y.

AU - Qian, S. J.

AU - Wang, D.

AU - Xu, Z.

AU - Wang, Y.

AU - Avila, C.

AU - Cabrera, A.

AU - Carrillo Montoya, C. A.

AU - Chaparro Sierra, L. F.

AU - Florez, C.

AU - González Hernández, C. F.

AU - Segura Delgado, M. A.

AU - Courbon, B.

AU - Godinovic, N.

AU - Lelas, D.

AU - Puljak, I.

AU - Sculac, T.

AU - Antunovic, Z.

AU - Kovac, M.

AU - Brigljevic, V.

AU - Ferencek, D.

AU - Kadija, K.

AU - Mesic, B.

AU - Starodumov, A.

AU - Susa, T.

AU - Ather, M. W.

AU - Attikis, A.

AU - Kolosova, M.

AU - Mavromanolakis, G.

AU - Mousa, J.

AU - Nicolaou, C.

AU - Ptochos, F.

AU - Razis, P. A.

AU - Rykaczewski, H.

AU - Finger, M.

AU - Finger, M.

AU - Ayala, E.

AU - Carrera Jarrin, E.

AU - Abdalla, H.

AU - Abdelalim, A. A.

AU - Mohamed, A.

AU - Bhowmik, S.

AU - Carvalho Antunes De Oliveira, A.

AU - Dewanjee, R. K.

AU - Ehataht, K.

AU - Kadastik, M.

AU - Raidal, M.

AU - Veelken, C.

AU - Eerola, P.

AU - Kirschenmann, H.

AU - Pekkanen, J.

AU - Voutilainen, M.

AU - Havukainen, J.

AU - Nash, J.

AU - The CMS Collaboration

PY - 2019/3/1

Y1 - 2019/3/1

N2 - A search is presented for the associated production of a standard model Higgs boson with a top quark-antiquark pair (t t ¯ 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 t t ¯ H events are selected that contain either one or two electrons or muons from the t t ¯ 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 t t ¯ H signal strength relative to the standard model cross section, μ = σ/σ SM , 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.[Figure not available: see fulltext.].

AB - A search is presented for the associated production of a standard model Higgs boson with a top quark-antiquark pair (t t ¯ 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 t t ¯ H events are selected that contain either one or two electrons or muons from the t t ¯ 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 t t ¯ H signal strength relative to the standard model cross section, μ = σ/σ SM , 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.[Figure not available: see fulltext.].

KW - Hadron-Hadron scattering (experiments)

KW - Higgs physics

KW - Top physics

UR - http://www.scopus.com/inward/record.url?scp=85062644157&partnerID=8YFLogxK

U2 - 10.1007/JHEP03(2019)026

DO - 10.1007/JHEP03(2019)026

M3 - Article

VL - 2019

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 3

M1 - 26

ER -