scholarly journals Calculation of power corrections to hadronic event shapes of tagged b events

2000 ◽  
Vol 2000 (01) ◽  
pp. 014-014 ◽  
Author(s):  
Zoltán Trócsányi
Keyword(s):  
Hadronic Event ◽  
Power Corrections ◽  
Event Shapes

scholarly journals Power corrections to event shapes using Eikonal dressed gluon exponentiation

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Neelima Agarwal ◽  
Ayan Mukhopadhyay ◽  
Sourav Pal ◽  
Anurag Tripathi
Keyword(s):  
Cross Section ◽  
Established Method ◽  
Hadronic Event ◽  
Power Corrections ◽  
Electron Positron Annihilation ◽  
Electron Positron ◽  
Lhc Physics ◽  
Event Shapes ◽  
Jet Shapes

AbstractEvent shapes are classical tools for the determination of the strong coupling and for the study of hadronization effects in electron-positron annihilation. In the context of analytical studies, hadronization corrections take the form of power-suppressed contributions to the cross section, which can be extracted from the perturbative ambiguity of Borel-resummed distributions. We propose a simplified version of the well-established method of Dressed Gluon Exponentiation (DGE), which we call Eikonal DGE (EDGE), which determines all dominant power corrections to event shapes by means of strikingly elementary calculations. We believe our method can be generalized to hadronic event shapes and jet shapes of relevance for LHC physics.

scholarly journals Calculation of power corrections to hadronic event shapes

1995 ◽  
Vol 352 (3-4) ◽  
pp. 451-455 ◽  
Author(s):  
Yu.L Dokshitzer ◽  
B.R Webber
Keyword(s):  
Hadronic Event ◽  
Power Corrections ◽  
Event Shapes

scholarly journals Soft-drop grooming for hadronic event shapes

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Jeremy Baron ◽  
Daniel Reichelt ◽  
Steffen Schumann ◽  
Niklas Schwanemann ◽  
Vincent Theeuwes
Keyword(s):  
Event Generator ◽  
Experimental Measurements ◽  
Event Shape ◽  
Matrix Elements ◽  
Underlying Event ◽  
Hadronic Event ◽  
Wide Range ◽  
Event Shapes ◽  
The Impact ◽  
Perturbative Corrections

Abstract Soft-drop grooming of hadron-collision final states has the potential to significantly reduce the impact of non-perturbative corrections, and in particular the underlying-event contribution. This eventually will enable a more direct comparison of accurate perturbative predictions with experimental measurements. In this study we consider soft-drop groomed dijet event shapes. We derive general results needed to perform the resummation of suitable event-shape variables to next-to-leading logarithmic (NLL) accuracy matched to exact next-to-leading order (NLO) QCD matrix elements. We compile predictions for the transverse-thrust shape accurate to NLO + NLL′ using the implementation of the Caesar formalism in the Sherpa event generator framework. We complement this by state-of-the-art parton- and hadron-level predictions based on NLO QCD matrix elements matched with parton showers. We explore the potential to mitigate non-perturbative corrections for particle-level and track-based measurements of transverse thrust by considering a wide range of soft-drop parameters. We find that soft-drop grooming indeed is very efficient in removing the underlying event. This motivates future experimental measurements to be compared to precise QCD predictions and employed to constrain non-perturbative models in Monte-Carlo simulations.

scholarly journals Power corrections to e+ e– Dijet event shapes

2003 ◽  
Vol 33 (S1) ◽  
pp. s407-s409 ◽  
Author(s):  
Carola F. Berger ◽  
George Sterman
Keyword(s):  
Power Corrections ◽  
Event Shapes
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