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      Azimuthal correlations of high transverse momentum jets at next-to-leading order in the parton branching method

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      Author(s)
      Abdulhamid, M.I.
      Al-Mashad, M.A.
      Martinez, A. Bermudez
      Bonomelli, G.
      Bubanja, I.
      Crnković, N.
      Colombina, F.
      D’Anzi, B.
      Cerci, S.
      Davydov, M.
      Banos, L. I. Estevez
      Forzano, N.
      Hautmann, F.
      Jung, H.
      Kim, S.
      Quirós, A. León
      Martins, D.E.
      Mendizabal, M.
      Figueroa, K. Moral
      Prestel, S.
      Monfared, S. Taheri
      Süslü, C.
      Cerci, D. Sunar
      van Kampen, A.M.
      Van Mechelen, P.
      Verbytskyi, A.
      Wang, Q.
      Yang, H.
      Zhou, Y.
      Date
      2022-01-13
      Source Title
      European Physical Journal C
      Print ISSN
      14346044
      Publisher
      Springer Science and Business Media Deutschland GmbH
      Volume
      82
      Issue
      1
      Pages
      1 - 10
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      The azimuthal correlation, Δ ϕ12, of high transverse momentum jets in pp collisions at s=13 TeV is studied by applying PB-TMD distributions to NLO calculations via MCatNLO together with the PB-TMD parton shower. A very good description of the cross section as a function of Δ ϕ12 is observed. In the back-to-back region of Δ ϕ12→ π, a very good agreement is observed with the PB-TMD Set 2 distributions while significant deviations are obtained with the PB-TMD Set 1 distributions. Set 1 uses the evolution scale while Set 2 uses transverse momentum as an argument in αs, and the above observation therefore confirms the importance of an appropriate soft-gluon coupling in angular ordered parton evolution. The total uncertainties of the predictions are dominated by the scale uncertainties of the matrix element, while the uncertainties coming from the PB-TMDs and the corresponding PB-TMD shower are very small. The Δ ϕ12 measurements are also compared with predictions using MCatNLO together Pythia8, illustrating the importance of details of the parton shower evolution. © 2022, The Author(s).
      Permalink
      http://hdl.handle.net/11693/111986
      Published Version (Please cite this version)
      https://dx.doi.org/10.1140/epjc/s10052-022-09997-1
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