Resummed jet mass distribution with trimming in Z+jet events at the LHC

A bstract In this paper, we calculate the resummed jet mass distribution up to next-to-leading logarithmic accuracy for jets defined with the trimming groomer in Z +jet events at the LHC. We compute at fixed order and to all orders the large logarithms, both in the jet mass and z cut trimming variable, including non-global and clustering logarithms. We conduct phenomenological studies at $$ \mathcal{O}\left({\alpha}_s\right) $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>O</mml:mi> <mml:mfenced> <mml:msub> <mml:mi>α</mml:mi> <mml:mi>s</mml:mi> </mml:msub> </mml:mfenced> </mml:math> , validating our results by comparing them with the fixed-order Monte Carlo program MCFM, which provides NLO predictions for hadron colliders. The resummation of non-global logarithms is estimated in the large-N c limit. Our resummed result is compared to Monte Carlo parton shower simulations from Pythia 8, Herwig++ and Sherpa 2 event generators.