20–25 Aug 2023
Universität Hamburg
Europe/Berlin timezone

Back-to-back azimuthal correlations in multijet and Zj

21 Aug 2023, 16:30
12m
Hörsaal (ErzWiss)

Hörsaal

ErzWiss

Von-Melle-Park 8
Parallel session talk QCD and Hadronic Physics T06 QCD and Hadronic Physics

Speaker

Sara Taheri Monfared (DESY)

Description

“The modeling of the soft radiation in MC approaches and the inclusion of the intrinsic kT effect in a consistent and “simple” way is one of the successes of the Parton Branching TMD approach. In this approach, a consistent treatment of the Parton Shower evolution and the TMD evolution is carried out by the PB-TMD initial state shower. In this talk, the azimuthal correlation, φ12, of high transverse momentum jets in pp collisions at √s = 13 TeV is studied by applying PB-TMD distributions and the PB-TMD initial state shower to NLO calculations via MCatNLO. Also, in the same kinematics regime, the Z+jet azimuthal correlation is studied. The different patterns of Z+jet and dijet azimuthal correlations can be used to search for potential factorization-breaking effects in the back-to-back region, which depend on the different color and spin structure of the final states and their interferences with the initial states. In order to investigate these effects experimentally, we propose to measure the ratio of the distributions in φ for Z+jet- and multijet production at low and at high transverse momenta.”

Collaboration / Activity CMS / CASCADE group

Primary authors

Presentation materials