Göttingen 2025 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 98: Electroweak Physics III (W/Z Production and Properties)

T 98.4: Vortrag

Freitag, 4. April 2025, 09:45–10:00, VG 2.103

Exploring the effects of a boosted vector boson’s polarisation on the jet reconstructed from their hadronic decay products — •Maren Bühring¹, Max Lehmann¹, Frank Siegert¹, Karolos Potamianos², Amartya Rej³, Donna Maria Mattern³, and Chris Malena Delitzsch³ — ¹IKTP, Technische Universität Dresden — ²University of Warwick — ³Technische Universität Dortmund, Fakultät Physik

The production of W or Z bosons in association with additional jets at the Large Hadron Collider (LHC) facilitates precision tests of the Standard Model, while also constituting an important background for other vector boson related processes and new physics searches. One of the challenges in the case of hadronically decaying vector bosons is to identify the bosons’ decay products among all of the other hadronic activity at the LHC. If the transverse momentum of the boson is especially high, then its decay products are likely to be reconstructed as one large radius jet, which makes the substructure of that jet one of the most useful tools in identifying them. This study explores the impact of the boson’s polarisation on the resulting jet’s kinematics and substructure using events simulated with Sherpa 3.0.0, with the goal of applying the results in an ATLAS analysis aiming to measure the cross section of vector boson plus jets production in the LHC Run 2 data set.

Keywords: Vector Bosons; Polarisation; Boosted; Jet