Measurement of the tt‾bb‾ production cross section in the all-jet final state in pp collisions at s=13 TeV

CMS Collaboration; Freya Blekman; Emil Sørensen Bols; Simranjit Singh Chhibra; Jorgen D'Hondt; Jarne De Clercq; Denys Lontkovskyi; Steven Lowette; Ivan Marchesini; Seth Moortgat; Quentin Python; Kirill Skovpen; Stefaan Tavernier; Walter Van Doninck; Petra Van Mulders; Douglas Burns; Douglas John Paul Burns

doi:10.1016/j.physletb.2020.135285

Measurement of the tt‾bb‾ production cross section in the all-jet final state in pp collisions at s=13 TeV

CMS Collaboration, Freya Blekman, Emil Sørensen Bols, Simranjit Singh Chhibra, Jorgen D'Hondt, Jarne De Clercq, Denys Lontkovskyi, Steven Lowette, Ivan Marchesini, Seth Moortgat, Quentin Python, Kirill Skovpen, Stefaan Tavernier, Walter Van Doninck, Petra Van Mulders, Douglas Burns, Douglas John Paul Burns

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A measurement of the production cross section of top quark pairs in association with two b jets (tt‾bb‾) is presented using data collected in proton-proton collisions at s=13 TeV by the CMS detector at the LHC corresponding to an integrated luminosity of 35.9 fb ⁻¹. The cross section is measured in the all-jet decay channel of the top quark pair by selecting events containing at least eight jets, of which at least two are identified as originating from the hadronization of b quarks. A combination of multivariate analysis techniques is used to reduce the large background from multijet events not containing a top quark pair, and to help discriminate between jets originating from top quark decays and other additional jets. The cross section is determined for the total phase space to be 5.5±0.3(stat) _−1.3 ^+1.6(syst)pb and also measured for two fiducial tt‾bb‾ definitions. The measured cross sections are found to be larger than theoretical predictions by a factor of 1.5–2.4, corresponding to 1–2 standard deviations.

Originele taal-2	English
Artikelnummer	135285
Aantal pagina's	26
Tijdschrift	Phys. Lett. B
Volume	803
Nummer van het tijdschrift	2020
DOI's	https://doi.org/10.1016/j.physletb.2020.135285
Status	Published - 10 apr 2020

Bibliografische nota

Replaced with the published version. Added the journal reference. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/TOP-18-011 (CMS Public Pages)

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10.1016/j.physletb.2020.135285Licentie: CC BY

1909.05306v2Submitted manuscript, 641 KBLicentie: CC BY
Measurement of the ttbb_CMSCollaborationFinal published version, 927 KBLicentie: CC BY

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Link to publication in Scopus

SRP8: SRP (Zwaartepunt): Hoge-Energiefysica
D'Hondt, J., Van Eijndhoven, N., Craps, B. & Buitink, S.
1/11/12 → 31/10/24
Project: Fundamenteel

Measurement of the $\mathrm{t\bar{t}}\mathrm{b\bar{b}}$ production cross section in the all-jet final state in pp collisions at $\sqrt{s} =$ 13 TeV
Blekman, F. (Creator), Bols, E. S. (Creator), Chhibra, S. S. (Creator), D'Hondt, J. (Creator), De Clercq, J. T. (Creator), Lontkovskyi, D. (Creator), Lowette, S. (Creator), Marchesini, I. (Creator), Moortgat, S. (Creator), Python, Q. (Creator), Skovpen, K. (Creator), Tavernier, S. (Creator), Van Doninck, W. (Creator), Van Mulders, P. (Creator) & Burns, D. (Creator), HEPData, 10 aug 2021
DOI: 10.17182/hepdata.91630.v2, https://www.hepdata.net/record/ins1753720?version=2
Dataset

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Collaboration, CMS., Blekman, F., Bols, E. S., Chhibra, S. S., D'Hondt, J., De Clercq, J., Lontkovskyi, D., Lowette, S., Marchesini, I., Moortgat, S., Python, Q., Skovpen, K., Tavernier, S., Van Doninck, W., Van Mulders, P., Burns, D., & Burns, D. J. P. (2020). Measurement of the tt‾bb‾ production cross section in the all-jet final state in pp collisions at s=13 TeV. Phys. Lett. B, 803(2020), [135285]. https://doi.org/10.1016/j.physletb.2020.135285

Collaboration, CMS ; Blekman, Freya ; Bols, Emil Sørensen ; Chhibra, Simranjit Singh ; D'Hondt, Jorgen ; De Clercq, Jarne ; Lontkovskyi, Denys ; Lowette, Steven ; Marchesini, Ivan ; Moortgat, Seth ; Python, Quentin ; Skovpen, Kirill ; Tavernier, Stefaan ; Van Doninck, Walter ; Van Mulders, Petra ; Burns, Douglas ; Burns, Douglas John Paul. / Measurement of the tt‾bb‾ production cross section in the all-jet final state in pp collisions at s=13 TeV. In: Phys. Lett. B. 2020 ; Vol. 803, Nr. 2020.

@article{3b5836c365464243921912a7730a848e,

title = "Measurement of the tt‾bb‾ production cross section in the all-jet final state in pp collisions at s=13 TeV",

abstract = "A measurement of the production cross section of top quark pairs in association with two b jets (tt‾bb‾) is presented using data collected in proton-proton collisions at s=13 TeV by the CMS detector at the LHC corresponding to an integrated luminosity of 35.9 fb −1. The cross section is measured in the all-jet decay channel of the top quark pair by selecting events containing at least eight jets, of which at least two are identified as originating from the hadronization of b quarks. A combination of multivariate analysis techniques is used to reduce the large background from multijet events not containing a top quark pair, and to help discriminate between jets originating from top quark decays and other additional jets. The cross section is determined for the total phase space to be 5.5±0.3(stat) −1.3 +1.6(syst)pb and also measured for two fiducial tt‾bb‾ definitions. The measured cross sections are found to be larger than theoretical predictions by a factor of 1.5–2.4, corresponding to 1–2 standard deviations. ",

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author = "CMS Collaboration and Freya Blekman and Bols, {Emil S{\o}rensen} and Chhibra, {Simranjit Singh} and Jorgen D'Hondt and {De Clercq}, Jarne and Denys Lontkovskyi and Steven Lowette and Ivan Marchesini and Seth Moortgat and Quentin Python and Kirill Skovpen and Stefaan Tavernier and {Van Doninck}, Walter and {Van Mulders}, Petra and Douglas Burns and Burns, {Douglas John Paul}",

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Collaboration, CMS, Blekman, F, Bols, ES, Chhibra, SS, D'Hondt, J, De Clercq, J, Lontkovskyi, D, Lowette, S, Marchesini, I, Moortgat, S, Python, Q, Skovpen, K, Tavernier, S, Van Doninck, W, Van Mulders, P, Burns, D & Burns, DJP 2020, 'Measurement of the tt‾bb‾ production cross section in the all-jet final state in pp collisions at s=13 TeV', Phys. Lett. B, vol. 803, nr. 2020, 135285. https://doi.org/10.1016/j.physletb.2020.135285

Measurement of the tt‾bb‾ production cross section in the all-jet final state in pp collisions at s=13 TeV. / Collaboration, CMS; Blekman, Freya; Bols, Emil Sørensen; Chhibra, Simranjit Singh; D'Hondt, Jorgen; De Clercq, Jarne; Lontkovskyi, Denys; Lowette, Steven; Marchesini, Ivan; Moortgat, Seth; Python, Quentin; Skovpen, Kirill; Tavernier, Stefaan; Van Doninck, Walter; Van Mulders, Petra; Burns, Douglas; Burns, Douglas John Paul.

In: Phys. Lett. B, Vol. 803, Nr. 2020, 135285, 10.04.2020.

Onderzoeksoutput: Article › peer review

TY - JOUR

T1 - Measurement of the tt‾bb‾ production cross section in the all-jet final state in pp collisions at s=13 TeV

AU - Collaboration, CMS

AU - Blekman, Freya

AU - Bols, Emil Sørensen

AU - Chhibra, Simranjit Singh

AU - D'Hondt, Jorgen

AU - De Clercq, Jarne

AU - Lontkovskyi, Denys

AU - Lowette, Steven

AU - Marchesini, Ivan

AU - Moortgat, Seth

AU - Python, Quentin

AU - Skovpen, Kirill

AU - Tavernier, Stefaan

AU - Van Doninck, Walter

AU - Van Mulders, Petra

AU - Burns, Douglas

AU - Burns, Douglas John Paul

N1 - Replaced with the published version. Added the journal reference. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/TOP-18-011 (CMS Public Pages)

PY - 2020/4/10

Y1 - 2020/4/10

N2 - A measurement of the production cross section of top quark pairs in association with two b jets (tt‾bb‾) is presented using data collected in proton-proton collisions at s=13 TeV by the CMS detector at the LHC corresponding to an integrated luminosity of 35.9 fb −1. The cross section is measured in the all-jet decay channel of the top quark pair by selecting events containing at least eight jets, of which at least two are identified as originating from the hadronization of b quarks. A combination of multivariate analysis techniques is used to reduce the large background from multijet events not containing a top quark pair, and to help discriminate between jets originating from top quark decays and other additional jets. The cross section is determined for the total phase space to be 5.5±0.3(stat) −1.3 +1.6(syst)pb and also measured for two fiducial tt‾bb‾ definitions. The measured cross sections are found to be larger than theoretical predictions by a factor of 1.5–2.4, corresponding to 1–2 standard deviations.

AB - A measurement of the production cross section of top quark pairs in association with two b jets (tt‾bb‾) is presented using data collected in proton-proton collisions at s=13 TeV by the CMS detector at the LHC corresponding to an integrated luminosity of 35.9 fb −1. The cross section is measured in the all-jet decay channel of the top quark pair by selecting events containing at least eight jets, of which at least two are identified as originating from the hadronization of b quarks. A combination of multivariate analysis techniques is used to reduce the large background from multijet events not containing a top quark pair, and to help discriminate between jets originating from top quark decays and other additional jets. The cross section is determined for the total phase space to be 5.5±0.3(stat) −1.3 +1.6(syst)pb and also measured for two fiducial tt‾bb‾ definitions. The measured cross sections are found to be larger than theoretical predictions by a factor of 1.5–2.4, corresponding to 1–2 standard deviations.

KW - hep-ex

UR - http://www.scopus.com/inward/record.url?scp=85080887360&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2020.135285

DO - 10.1016/j.physletb.2020.135285

M3 - Article

VL - 803

JO - Phys. Lett. B

JF - Phys. Lett. B

SN - 0370-2693

IS - 2020

M1 - 135285

ER -

Measurement of the tt‾bb‾ production cross section in the all-jet final state in pp collisions at s=13 TeV

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Bibliografische nota

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Projecten

SRP8: SRP (Zwaartepunt): Hoge-Energiefysica

Datasets

Measurement of the $\mathrm{t\bar{t}}\mathrm{b\bar{b}}$ production cross section in the all-jet final state in pp collisions at $\sqrt{s} =$ 13 TeV

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