TY  - EJOUR
AU  - Becher, Thomas
AU  - Neubert, Matthias
AU  - Rothen, Lorena
AU  - Shao, Ding Yu
TI  - Factorization and Resummation for Jet Processes
IS  - DESY-16-052
M1  - PUBDB-2016-01988
M1  - DESY-16-052
M1  - MITP-16-042
M1  - arXiv:1605.02737
PY  - 2016
AB  - From a detailed analysis of cone-jet cross sections in effective field theory, we obtain novel factorization theorems which separate the physics associated with different energy scales present in such processes. The relevant low-energy physics is encoded in Wilson lines along the directions of the energetic particles inside the jets. This multi-Wilson-line structure is present even for narrow-cone jets due to the relevance of small-angle soft radiation. We discuss the renormalization-group equations satisfied by these operators. Their solution resums all logarithmically enhanced contributions to such processes, including non-global logarithms. Such logarithms arise in many observables, in particular whenever hard phase-space constraints are imposed, and are not captured with standard resummation techniques. Our formalism provides the basis for higher-order logarithmic resummations of jet and other non-global observables. As a nontrivial consistency check, we use it to obtain explicit two-loop results for all logarithmically enhanced terms in cone-jet cross sections and verify those against numerical fixed-order computations.
KW  - resummation (autogen)
KW  - factorization (autogen)
KW  - effective field theory (autogen)
KW  - renormalization group (autogen)
KW  - higher-order (autogen)
KW  - small-angle (autogen)
KW  - phase space (autogen)
KW  - Wilson loop (autogen)
KW  - structure (autogen)
LB  - PUB:(DE-HGF)25 ; PUB:(DE-HGF)29
UR  - https://bib-pubdb1.desy.de/record/299577
ER  -