scholarly journals Transverse momentum distribution through soft-gluon resummation in effective field theory

2005 ◽  
Vol 625 (3-4) ◽  
pp. 253-263 ◽  
Author(s):  
Ahmad Idilbi ◽  
Xiangdong Ji ◽  
Feng Yuan
Keyword(s):  
Field Theory ◽  
Transverse Momentum ◽  
Momentum Distribution ◽  
Effective Field Theory ◽  
Effective Field ◽  
Transverse Momentum Distribution ◽  
Soft Gluon

scholarly journals Transverse momentum broadening of a jet in quark-gluon plasma: an open quantum system EFT

2020 ◽  
Vol 2020 (10) ◽  
Author(s):  
Varun Vaidya ◽  
Xiaojun Yao
Keyword(s):  
Field Theory ◽  
Transverse Momentum ◽  
Master Equation ◽  
Effective Field Theory ◽  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Effective Field ◽  
Jet Quenching ◽  
Jet Substructure ◽  
Open Quantum

Abstract We utilize the technology of open quantum systems in conjunction with the recently developed effective field theory for forward scattering to address the question of massless jet propagation through a weakly-coupled quark-gluon plasma in thermal equilibrium. We discuss various possible hierarchies of scales that may appear in this problem, by comparing thermal scales of the plasma with relevant scales in the effective field theory. Starting from the Lindblad equation, we derive and solve a master equation for the trans- verse momentum distribution of a massless quark jet, at leading orders both in the strong coupling and in the power counting of the effective field theory. Markovian approximation is justified in the weak coupling limit. Using the solution to the master equation, we study the transverse momentum broadening of a jet as a function of the plasma temperature and the time of propagation. We discuss the physical origin of infrared sensitivity that arises in the solution and a way to handle it in the effective field theory formulation. We suspect that the final measurement constraint can only cut-off leading infrared singularities and the solution to the Markovian master equation resums a logarithmic series. This work is a stepping stone towards understanding jet quenching and jet substructure observables on both light and heavy quark jets as probes of the quark-gluon plasma.

scholarly journals Effective Field Theory in quest to parametrise Higgs properties: the transverse momentum spectrum case

2017 ◽  
Vol 873 ◽  
pp. 012050 ◽  
Author(s):  
Massimiliano Grazzini ◽  
Agnieszka Ilnicka ◽  
Michael Spira ◽  
Marius Wiesemann
Keyword(s):  
Field Theory ◽  
Transverse Momentum ◽  
Effective Field Theory ◽  
Effective Field ◽  
Momentum Spectrum ◽  
Transverse Momentum Spectrum

scholarly journals LARGE-QTW-BOSON PRODUCTION AT THE TEVATRON

2005 ◽  
Vol 20 (15) ◽  
pp. 3233-3235
Author(s):  
NIKOLAOS KIDONAKIS ◽  
AGUSTíN SABIO VERA
Keyword(s):  
Transverse Momentum ◽  
Momentum Distribution ◽  
W Bosons ◽  
Scale Dependence ◽  
Transverse Momentum Distribution ◽  
Soft Gluon ◽  
Boson Production ◽  
Leading Order ◽  
Large Transverse Momentum

The production of W bosons at large transverse momentum at the Tevatron is dominated by soft-gluon corrections. In this talk we present a calculation of these corrections at next-to-next-to-leading order. The corrections enhance the transverse momentum distribution of the W while reducing the scale dependence.

Sign in / Sign up

Export Citation Format

Share Document