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Measurements of tt¯ cross sections in association with b jets and inclusive jets and their ratio using dilepton final states in pp collisions at s=13TeV

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Sirunyan, AM; Tumasyan, A; Adam, W; Asilar, E; Bergauer, T; Brandstetter, J; Brondolin, E; Dragicevic, M; Erö, J; Flechl, M; Friedl, M; Rad, N ...
Published in: Physics Letters Section B Nuclear Elementary Particle and High Energy Physics
January 10, 2018

The cross sections for the production of tt¯bb¯ and tt¯jj events and their ratio σtt¯bb¯tt¯jj are measured using data corresponding to an integrated luminosity of 2.3 fb−1collected in pp collisions at s=13 TeV with the CMS detector at the LHC. Events with two leptons (e or μ) and at least four reconstructed jets, including at least two identified as b quark jets, in the final state are selected. In the full phase space, the measured ratio is 0.022±0.003(stat)±0.006(syst), the cross section σtt¯bb¯ is 4.0±0.6(stat)±1.3(syst) pb and σtt¯jj is 184±6(stat)±33(syst) pb. The measurements are compared with the standard model expectations obtained from a POWHEG simulation at next-to-leading-order interfaced with PYTHIA.

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Published In

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics

DOI

ISSN

0370-2693

Publication Date

January 10, 2018

Volume

776

Start / End Page

355 / 378

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
 

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Sirunyan, A. M., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., Brandstetter, J., … Francois, B. (2018). Measurements of tt¯ cross sections in association with b jets and inclusive jets and their ratio using dilepton final states in pp collisions at s=13TeV. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, 776, 355–378. https://doi.org/10.1016/j.physletb.2017.11.043
Sirunyan, A. M., A. Tumasyan, W. Adam, E. Asilar, T. Bergauer, J. Brandstetter, E. Brondolin, et al. “Measurements of tt¯ cross sections in association with b jets and inclusive jets and their ratio using dilepton final states in pp collisions at s=13TeV.” Physics Letters Section B Nuclear Elementary Particle and High Energy Physics 776 (January 10, 2018): 355–78. https://doi.org/10.1016/j.physletb.2017.11.043.
Sirunyan AM, Tumasyan A, Adam W, Asilar E, Bergauer T, Brandstetter J, et al. Measurements of tt¯ cross sections in association with b jets and inclusive jets and their ratio using dilepton final states in pp collisions at s=13TeV. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics. 2018 Jan 10;776:355–78.
Sirunyan, A. M., et al. “Measurements of tt¯ cross sections in association with b jets and inclusive jets and their ratio using dilepton final states in pp collisions at s=13TeV.” Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, vol. 776, Jan. 2018, pp. 355–78. Scopus, doi:10.1016/j.physletb.2017.11.043.
Sirunyan AM, Tumasyan A, Adam W, Asilar E, Bergauer T, Brandstetter J, Brondolin E, Dragicevic M, Erö J, Flechl M, Friedl M, Frühwirth R, Ghete VM, Hörmann N, Hrubec J, Jeitler M, König A, Krätschmer I, Liko D, Matsushita T, Mikulec I, Rabady D, Rad N, Rohringer H, Schieck J, Strauss J, Waltenberger W, Wulz CE, Chekhovsky V, Mossolov V, Suarez Gonzalez J, Shumeiko N, Alderweireldt S, De Wolf EA, Janssen X, Lauwers J, Van De Klundert M, Van Haevermaet H, Van Mechelen P, Van Remortel N, Van Spilbeeck A, Abu Zeid S, Blekman F, D’Hondt J, De Bruyn I, De Clercq J, Deroover K, Lowette S, Moortgat S, Moreels L, Olbrechts A, Python Q, Skovpen K, Tavernier S, Van Doninck W, Van Mulders P, Van Parijs I, Brun H, Clerbaux B, De Lentdecker G, Delannoy H, Fasanella G, Favart L, Goldouzian R, Grebenyuk A, Karapostoli G, Lenzi T, Luetic J, Maerschalk T, Marinov A, Randle-conde A, Seva T, Vander Velde C, Vanlaer P, Vannerom D, Yonamine R, Zenoni F, Zhang F, Cimmino A, Cornelis T, Dobur D, Fagot A, Gul M, Khvastunov I, Poyraz D, Salva S, Schöfbeck R, Tytgat M, Van Driessche W, Verbeke W, Zaganidis N, Bakhshiansohi H, Bondu O, Brochet S, Bruno G, Caudron A, De Visscher S, Delaere C, Delcourt M, Francois B. Measurements of tt¯ cross sections in association with b jets and inclusive jets and their ratio using dilepton final states in pp collisions at s=13TeV. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics. 2018 Jan 10;776:355–378.
Journal cover image

Published In

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics

DOI

ISSN

0370-2693

Publication Date

January 10, 2018

Volume

776

Start / End Page

355 / 378

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 49 Mathematical sciences