Measurements of the groomed jet radius and momentum splitting fraction with the soft drop and dynamical grooming algorithms in pp collisions at $$ \sqrt{s} $$ = 5.02 TeV
S. Acharya (Université Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France, Variable Energy Cyclotron Centre, Homi Bhabha National Institute, Kolkata, India); D. Adamová (Nuclear Physics Institute of the Czech Academy of Sciences, Husinec-Řež, Czech Republic); A. Adler (Johann-Wolfgang-Goethe Universität Frankfurt Institut für Informatik, Fachbereich Informatik und Mathematik, Frankfurt, Germany); G. Aglieri Rinella (European Organization for Nuclear Research (CERN), Geneva, Switzerland); M. Agnello (Dipartimento DISAT del Politecnico and Sezione INFN, Turin, Italy); et al - Show all 1031 authors
This article presents measurements of the groomed jet radius and momentum splitting fraction in pp collisions at $$ \sqrt{s} $$ = 5.02 TeV with the ALICE detector at the Large Hadron Collider. Inclusive charged-particle jets are reconstructed at midrapidity using the anti-k T algorithm for transverse momentum $$ 60<{p}_{\textrm{T}}^{\textrm{ch}\;\textrm{jet}}<80 $$ GeV/c. We report results using two different grooming algorithms: soft drop and, for the first time, dynamical grooming. For each grooming algorithm, a variety of grooming settings are used in order to explore the impact of collinear radiation on these jet substructure observables. These results are compared to perturbative calculations that include resummation of large logarithms at all orders in the strong coupling constant. We find good agreement of the theoretical predictions with the data for all grooming settings considered.