Transverse momentum dependent fragmentation function at next-to-next-to-leading order
(2016) In Physical Review D (Particles, Fields, Gravitation and Cosmology) 93(1).- Abstract
- We calculate the unpolarized transverse momentum dependent fragmentation function at next-to-next-to-leading order, evaluating separately the transverse momentum dependent (TMD) soft factor and the TMD collinear correlator. For the first time, the cancellation of spurious rapidity divergences in a properly defined individual TMD beyond the first nontrivial order is shown. This represents a strong check of the given TMD definition. We extract the matching coefficient necessary to perform the transverse momentum resummation at next-to-next-to-next-to-leading-logarithmic accuracy. The universal character of the soft function, which enters the definition of all (un)polarized TMD distribution/fragmentation functions, facilitates the future... (More)
- We calculate the unpolarized transverse momentum dependent fragmentation function at next-to-next-to-leading order, evaluating separately the transverse momentum dependent (TMD) soft factor and the TMD collinear correlator. For the first time, the cancellation of spurious rapidity divergences in a properly defined individual TMD beyond the first nontrivial order is shown. This represents a strong check of the given TMD definition. We extract the matching coefficient necessary to perform the transverse momentum resummation at next-to-next-to-next-to-leading-logarithmic accuracy. The universal character of the soft function, which enters the definition of all (un)polarized TMD distribution/fragmentation functions, facilitates the future calculation of all the other TMDs and their coefficients at next-to-next-to-leading order, pushing forward the accuracy of theoretical predictions for the current and next generation of high energy colliders. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/8731964
- author
- Echevarria, Miguel ; Scimemi, Ignazio and Vladimirov, Alexey LU
- organization
- publishing date
- 2016
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review D (Particles, Fields, Gravitation and Cosmology)
- volume
- 93
- issue
- 1
- article number
- 011502
- publisher
- American Physical Society
- external identifiers
-
- wos:000368516100001
- scopus:84955513569
- ISSN
- 1550-2368
- DOI
- 10.1103/PhysRevD.93.011502
- project
- Postdoc Alexey Vladimirov
- language
- English
- LU publication?
- yes
- id
- 9cb0ceae-68ef-40b0-833a-73e00375e685 (old id 8731964)
- date added to LUP
- 2016-04-01 09:54:50
- date last changed
- 2024-04-21 00:01:46
@article{9cb0ceae-68ef-40b0-833a-73e00375e685, abstract = {{We calculate the unpolarized transverse momentum dependent fragmentation function at next-to-next-to-leading order, evaluating separately the transverse momentum dependent (TMD) soft factor and the TMD collinear correlator. For the first time, the cancellation of spurious rapidity divergences in a properly defined individual TMD beyond the first nontrivial order is shown. This represents a strong check of the given TMD definition. We extract the matching coefficient necessary to perform the transverse momentum resummation at next-to-next-to-next-to-leading-logarithmic accuracy. The universal character of the soft function, which enters the definition of all (un)polarized TMD distribution/fragmentation functions, facilitates the future calculation of all the other TMDs and their coefficients at next-to-next-to-leading order, pushing forward the accuracy of theoretical predictions for the current and next generation of high energy colliders.}}, author = {{Echevarria, Miguel and Scimemi, Ignazio and Vladimirov, Alexey}}, issn = {{1550-2368}}, language = {{eng}}, number = {{1}}, publisher = {{American Physical Society}}, series = {{Physical Review D (Particles, Fields, Gravitation and Cosmology)}}, title = {{Transverse momentum dependent fragmentation function at next-to-next-to-leading order}}, url = {{http://dx.doi.org/10.1103/PhysRevD.93.011502}}, doi = {{10.1103/PhysRevD.93.011502}}, volume = {{93}}, year = {{2016}}, }