Results 71 to 80 of about 7,483 (133)

Towards parton distribution functions with small-x resummation: HELL 2.0

Journal of High Energy Physics, 2017
In global fits of parton distribution functions (PDFs) a large fraction of data points, mostly from the HERA collider, lies in a region of x and Q 2 that is sensitive to small-x logarithmic enhancements.
Marco Bonvini, Simone Marzani, Claudio Muselli   +2 more
doaj   +1 more source

Subleading power resummation of rapidity logarithms: the energy-energy correlator in $$ \mathcal{N} $$ = 4 SYM [PDF]

Journal of High Energy Physics, 2019
We derive and solve renormalization group equations that allow for the resummation of subleading power rapidity logarithms. Our equations involve operator mixing into a new class of operators, which we term the “rapidity identity operators”, that will ...
I. Moult, G. Vita, K. Yan
semanticscholar   +1 more source

Bootstrapping Rapidity Anomalous Dimensions for Transverse-Momentum Resummation. [PDF]

Physical Review Letters, 2016
A soft function relevant for transverse-momentum resummation for Drell-Yan or Higgs production at hadron colliders is computed through to three loops in the expansion of strong coupling, with the help of the bootstrap technique and supersymmetric ...
Ye Li, Hua Xing Zhu
semanticscholar   +1 more source

Transverse momentum distributions at large-x

Journal of High Energy Physics
We investigate the collinear matching of transverse momentum dependent (TMD) distributions at large values of x, computing and resumming the leading large-x asymptotics for matching coefficients.
Oscar del Rio, Alexei Prokudin, Ignazio Scimemi, Alexey Vladimirov   +3 more
doaj   +1 more source

High energy resummation of jet observables

Journal of High Energy Physics, 2017
In this paper we investigate the extension of high energy resummation at LLx accuracy to jet observables. In particular, we present the high energy resummed expression of the transverse momentum distribution of the outgoing parton in the general partonic
Simone Zoia, Claudio Muselli
doaj   +1 more source

Limits on an improved action for contact effective field theory in two-body systems

Physics Letters B
We consider a possible resummation of subleading effects in two-body systems with a large scattering length as described by a short-range effective field theory (EFT).
Lorenzo Contessi, Manuel Pavon Valderrama, Ubirajara van Kolck   +2 more
doaj   +1 more source

High-energy resummation in heavy-quark pair photoproduction

Physics Letters B, 2018
We present our predictions for the inclusive production of two heavy quark–antiquark pairs, separated by a large rapidity interval, in the collision of (quasi-)real photons at the energies of LEP2 and of some future electron–positron colliders.
F.G. Celiberto, D.Yu. Ivanov, B. Murdaca, A. Papa   +3 more
doaj   +1 more source

Improved thermal resummation for multi-field potentials

Journal of High Energy Physics
The resummation of large thermal corrections to the effective potential is mandatory for the accurate prediction of phase transitions. We discuss the accuracy of different prescriptions to perform this resummation at the one- and two-loop level and point
Henning Bahl, Marcela Carena, Aurora Ireland, Carlos E. M. Wagner   +3 more
doaj   +1 more source

Jettiness formulation of the MiNNLOPS method

Journal of High Energy Physics
We present a new formulation of the MiNNLOPS method to match NNLO QCD calculations with parton showers by using jettiness as a resummation variable. The full derivation for colour-singlet processes is presented using 0-jettiness starting from the NNLL ...
Markus Ebert, Luca Rottoli, Marius Wiesemann, Giulia Zanderighi, Silvia Zanoli   +4 more
doaj   +1 more source

Four-loop splitting functions at small x

Journal of High Energy Physics, 2018
We consider the expansion of small-x resummed DGLAP splitting functions at next-to-leading logarithmic (NLL) accuracy to four-loop order, namely next-to-next-to-next-to-leading order (N3LO).
Marco Bonvini, Simone Marzani
doaj   +1 more source