Nonperturbative corrections to soft drop jet mass
Abstract We provide a quantum field theory based description of the nonperturbative effects from hadronization for soft drop groomed jet mass distributions using the soft- collinear effective theory and the coherent branching formalism. There are two distinct regions of jet mass m J where grooming m...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2019-12-01
|
| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP12(2019)002 |
| _version_ | 1818332257284259840 |
|---|---|
| author | André H. Hoang Sonny Mantry Aditya Pathak Iain W. Stewart |
| author_facet | André H. Hoang Sonny Mantry Aditya Pathak Iain W. Stewart |
| author_sort | André H. Hoang |
| collection | DOAJ |
| description | Abstract We provide a quantum field theory based description of the nonperturbative effects from hadronization for soft drop groomed jet mass distributions using the soft- collinear effective theory and the coherent branching formalism. There are two distinct regions of jet mass m J where grooming modifies hadronization effects. In a region with intermediate m J an operator expansion can be used, and the leading power corrections are given by three universal nonperturbative parameters that are independent of all kinematic variables and grooming parameters, and only depend on whether the parton initiating the jet is a quark or gluon. The leading power corrections in this region cannot be described by a standard normalized shape function. These power corrections depend on the kinematics of the subjet that stops soft drop through short distance coefficients, which encode a perturbatively calculable dependence on the jet transverse momentum, jet rapidity, and on the soft drop grooming parameters z cut and β. Determining this dependence requires a resummation of large logarithms, which we carry out at LL order. For smaller m J there is a nonperturbative region described by a one-dimensional shape function that is unusual because it is not normalized to unity, and has a non-trivial dependence on β. |
| first_indexed | 2024-12-13T13:32:52Z |
| format | Article |
| id | doaj.art-7dd78cd4c3434846a83e047020f984b3 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-13T13:32:52Z |
| publishDate | 2019-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-7dd78cd4c3434846a83e047020f984b32022-12-21T23:44:08ZengSpringerOpenJournal of High Energy Physics1029-84792019-12-0120191218110.1007/JHEP12(2019)002Nonperturbative corrections to soft drop jet massAndré H. Hoang0Sonny Mantry1Aditya Pathak2Iain W. Stewart3University of ViennaDepartment of Physics, University of North GeorgiaUniversity of ViennaCenter for Theoretical Physics, Massachusetts Institute of TechnologyAbstract We provide a quantum field theory based description of the nonperturbative effects from hadronization for soft drop groomed jet mass distributions using the soft- collinear effective theory and the coherent branching formalism. There are two distinct regions of jet mass m J where grooming modifies hadronization effects. In a region with intermediate m J an operator expansion can be used, and the leading power corrections are given by three universal nonperturbative parameters that are independent of all kinematic variables and grooming parameters, and only depend on whether the parton initiating the jet is a quark or gluon. The leading power corrections in this region cannot be described by a standard normalized shape function. These power corrections depend on the kinematics of the subjet that stops soft drop through short distance coefficients, which encode a perturbatively calculable dependence on the jet transverse momentum, jet rapidity, and on the soft drop grooming parameters z cut and β. Determining this dependence requires a resummation of large logarithms, which we carry out at LL order. For smaller m J there is a nonperturbative region described by a one-dimensional shape function that is unusual because it is not normalized to unity, and has a non-trivial dependence on β.https://doi.org/10.1007/JHEP12(2019)002Effective Field TheoriesNonperturbative EffectsPerturbative QCDRe- summation |
| spellingShingle | André H. Hoang Sonny Mantry Aditya Pathak Iain W. Stewart Nonperturbative corrections to soft drop jet mass Journal of High Energy Physics Effective Field Theories Nonperturbative Effects Perturbative QCD Re- summation |
| title | Nonperturbative corrections to soft drop jet mass |
| title_full | Nonperturbative corrections to soft drop jet mass |
| title_fullStr | Nonperturbative corrections to soft drop jet mass |
| title_full_unstemmed | Nonperturbative corrections to soft drop jet mass |
| title_short | Nonperturbative corrections to soft drop jet mass |
| title_sort | nonperturbative corrections to soft drop jet mass |
| topic | Effective Field Theories Nonperturbative Effects Perturbative QCD Re- summation |
| url | https://doi.org/10.1007/JHEP12(2019)002 |
| work_keys_str_mv | AT andrehhoang nonperturbativecorrectionstosoftdropjetmass AT sonnymantry nonperturbativecorrectionstosoftdropjetmass AT adityapathak nonperturbativecorrectionstosoftdropjetmass AT iainwstewart nonperturbativecorrectionstosoftdropjetmass |