Nonperturbative corrections to soft drop jet mass
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 mJ where grooming modifies ha...
| Main Authors: | , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Springer Science and Business Media LLC
2021
|
| Online Access: | https://hdl.handle.net/1721.1/129700 |
| _version_ | 1826208286665342976 |
|---|---|
| author | Hoang, André H. Mantry, Sonny Pathak, Aditya Stewart, Iain W |
| author2 | Massachusetts Institute of Technology. Center for Theoretical Physics |
| author_facet | Massachusetts Institute of Technology. Center for Theoretical Physics Hoang, André H. Mantry, Sonny Pathak, Aditya Stewart, Iain W |
| author_sort | Hoang, André H. |
| collection | MIT |
| description | 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 mJ where grooming modifies hadronization effects. In a region with intermediate mJ 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 zcut and β. Determining this dependence requires a resummation of large logarithms, which we carry out at LL order. For smaller mJ 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 | 2024-09-23T14:03:08Z |
| format | Article |
| id | mit-1721.1/129700 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T14:03:08Z |
| publishDate | 2021 |
| publisher | Springer Science and Business Media LLC |
| record_format | dspace |
| spelling | mit-1721.1/1297002022-09-28T18:01:00Z Nonperturbative corrections to soft drop jet mass Hoang, André H. Mantry, Sonny Pathak, Aditya Stewart, Iain W Massachusetts Institute of Technology. Center for Theoretical Physics 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 mJ where grooming modifies hadronization effects. In a region with intermediate mJ 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 zcut and β. Determining this dependence requires a resummation of large logarithms, which we carry out at LL order. For smaller mJ 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. 2021-02-08T15:22:18Z 2021-02-08T15:22:18Z 2019-12 2019-12 2020-06-26T13:09:16Z Article http://purl.org/eprint/type/JournalArticle 1029-8479 https://hdl.handle.net/1721.1/129700 Hoang, André H. et al. "Nonperturbative corrections to soft drop jet mass." Journal of High Energy Physics. 2019, 12 (December 2019): 2 en https://doi.org/10.1007/JHEP12(2019)002 Journal of High Energy Physics Creative Commons Attribution https://creativecommons.org/licenses/by/4.0/ The Author(s) application/pdf Springer Science and Business Media LLC Springer Berlin Heidelberg |
| spellingShingle | Hoang, André H. Mantry, Sonny Pathak, Aditya Stewart, Iain W Nonperturbative corrections to soft drop jet mass |
| 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 |
| url | https://hdl.handle.net/1721.1/129700 |
| work_keys_str_mv | AT hoangandreh nonperturbativecorrectionstosoftdropjetmass AT mantrysonny nonperturbativecorrectionstosoftdropjetmass AT pathakaditya nonperturbativecorrectionstosoftdropjetmass AT stewartiainw nonperturbativecorrectionstosoftdropjetmass |