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Measurement of top quark pair production in association with a Z boson in proton-proton collisions at √s = 13 TeV

Journal articles  - Journal Article
Sirunyan, AM; Tumasyan, A; Adam, W; Ambrogi, F; Bergauer, T; Brandstetter, J; Dragicevic, M; Erö, J; Escalante Del Valle, A; Flechl, M; Liko, D ...
Published in: Journal of High Energy Physics
March 1, 2020
Published version (DOI)

A measurement of the inclusive cross section of top quark pair production in association with a Z boson using proton-proton collisions at a center-of-mass energy of 13 TeV at the LHC is performed. The data sample corresponds to an integrated luminosity of 77.5 fb−1, collected by the CMS experiment during 2016 and 2017. The measurement is performed using final states containing three or four charged leptons (electrons or muons), and the Z boson is detected through its decay to an oppositely charged lepton pair. The production cross section is measured to be σ(t t ¯ Z) = 0.95 ± 0.05 (stat) ± 0.06 (syst) pb. For the first time, differential cross sections are measured as functions of the transverse momentum of the Z boson and the angular distribution of the negatively charged lepton from the Z boson decay. The most stringent direct limits to date on the anomalous couplings of the top quark to the Z boson are presented, including constraints on the Wilson coefficients in the framework of the standard model effective field theory. [Figure not available: see fulltext.]

Duke Scholars

Seog Oh
Author Seog Oh Physics
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Published In

Journal of High Energy Physics

DOI

10.1007/JHEP03(2020)056

EISSN

1029-8479

Publication Date

March 1, 2020

Volume

2020

Issue

3

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5106 Nuclear and plasma physics
  • 4902 Mathematical physics
 

Citation

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Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Brandstetter, J., … Alves, F. L. (2020). Measurement of top quark pair production in association with a Z boson in proton-proton collisions at √s = 13 TeV. Journal of High Energy Physics, 2020(3). https://doi.org/10.1007/JHEP03(2020)056
Sirunyan, A. M., A. Tumasyan, W. Adam, F. Ambrogi, T. Bergauer, J. Brandstetter, M. Dragicevic, et al. “Measurement of top quark pair production in association with a Z boson in proton-proton collisions at √s = 13 TeV.” Journal of High Energy Physics 2020, no. 3 (March 1, 2020). https://doi.org/10.1007/JHEP03(2020)056.
Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Brandstetter J, et al. Measurement of top quark pair production in association with a Z boson in proton-proton collisions at √s = 13 TeV. Journal of High Energy Physics. 2020 Mar 1;2020(3).
Sirunyan, A. M., et al. “Measurement of top quark pair production in association with a Z boson in proton-proton collisions at √s = 13 TeV.” Journal of High Energy Physics, vol. 2020, no. 3, Mar. 2020. Scopus, doi:10.1007/JHEP03(2020)056.
Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Brandstetter J, Dragicevic M, Erö J, Escalante Del Valle A, Flechl M, Frühwirth R, Jeitler M, Krammer N, Krätschmer I, Liko D, Madlener T, Mikulec I, Rad N, Schieck J, Schöfbeck R, Spanring M, Spitzbart D, Waltenberger W, Wulz CE, Zarucki M, Drugakov V, Mossolov V, Suarez Gonzalez J, Darwish MR, De Wolf EA, Di Croce D, Janssen X, Lauwers J, Lelek A, Pieters M, Rejeb Sfar H, Van Haevermaet H, Van Mechelen P, Van Putte S, Van Remortel N, Blekman F, Bols ES, Chhibra SS, D’Hondt J, De Clercq J, Lontkovskyi D, Lowette S, Marchesini I, Moortgat S, Moreels L, Python Q, Skovpen K, Tavernier S, Van Doninck W, Van Mulders P, Van Parijs I, Beghin D, Bilin B, Brun H, Clerbaux B, De Lentdecker G, Delannoy H, Dorney B, Favart L, Grebenyuk A, Kalsi AK, Luetic J, Popov A, Postiau N, Starling E, Thomas L, Vander Velde C, Vanlaer P, Vannerom D, Wang Q, Cornelis T, Dobur D, Khvastunov I, Roskas C, Trocino D, Tytgat M, Verbeke W, Vermassen B, Vit M, Zaganidis N, Bondu O, Bruno G, Caputo C, David P, Delaere C, Delcourt M, Giammanco A, Lemaitre V, Magitteri A, Prisciandaro J, Saggio A, Vidal Marono M, Vischia P, Zobec J, Alves FL. Measurement of top quark pair production in association with a Z boson in proton-proton collisions at √s = 13 TeV. Journal of High Energy Physics. 2020 Mar 1;2020(3).
Journal cover image

Published In

Journal of High Energy Physics

DOI

10.1007/JHEP03(2020)056

EISSN

1029-8479

Publication Date

March 1, 2020

Volume

2020

Issue

3

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5106 Nuclear and plasma physics
  • 4902 Mathematical physics