scholarly journals Minimum Bias and Hadronic Event Shapes at LHC

2010 ◽  
Author(s):  
Iacopo VIVARELLI
2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Jeremy Baron ◽  
Daniel Reichelt ◽  
Steffen Schumann ◽  
Niklas Schwanemann ◽  
Vincent Theeuwes

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.


2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Neelima Agarwal ◽  
Ayan Mukhopadhyay ◽  
Sourav Pal ◽  
Anurag Tripathi

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.


1992 ◽  
Vol 284 (3-4) ◽  
pp. 471-481 ◽  
Author(s):  
O. Adrian ◽  
M. Aguilar-Benitez ◽  
S. Ahlen ◽  
J. Alcaraz ◽  
A. Aloisio ◽  
...  
Keyword(s):  

2012 ◽  
Vol 2012 (6) ◽  
Author(s):  
Christoph Englert ◽  
Michael Spannowsky ◽  
Michihisa Takeuchi
Keyword(s):  

2008 ◽  
Vol 2008 (02) ◽  
pp. 040-040 ◽  
Author(s):  
G Dissertori ◽  
A. Gehrmann-De Ridder ◽  
T Gehrmann ◽  
E.W.N Glover ◽  
G Heinrich ◽  
...  

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