Studies of gluon TMDs and their evolution using quarkonium-pair production at the LHC
Abstract $$J/\psi $$ J/ψ - or $$\Upsilon $$ Υ -pair production at the LHC are promising processes to study the gluon transverse momentum distributions (TMDs) which remain very poorly known. In this article, we improve on previous results by including the TMD evolution in the computation of the obser...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2020-02-01
|
| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-020-7619-1 |
| _version_ | 1819058962205507584 |
|---|---|
| author | Florent Scarpa Daniël Boer Miguel G. Echevarria Jean-Philippe Lansberg Cristian Pisano Marc Schlegel |
| author_facet | Florent Scarpa Daniël Boer Miguel G. Echevarria Jean-Philippe Lansberg Cristian Pisano Marc Schlegel |
| author_sort | Florent Scarpa |
| collection | DOAJ |
| description | Abstract $$J/\psi $$ J/ψ - or $$\Upsilon $$ Υ -pair production at the LHC are promising processes to study the gluon transverse momentum distributions (TMDs) which remain very poorly known. In this article, we improve on previous results by including the TMD evolution in the computation of the observables such as the pair-transverse-momentum spectrum and asymmetries arising from the linear polarization of gluons inside unpolarized protons. We show that the azimuthal asymmetries generated by the gluon polarization are reduced compared to the tree level case but are still of measurable size (in the 5–10% range). Such asymmetries should be measurable in the available data sets of $$J/\psi $$ J/ψ pairs and in the future data sets of the high-luminosity LHC for $$\Upsilon $$ Υ pairs. |
| first_indexed | 2024-12-21T14:03:32Z |
| format | Article |
| id | doaj.art-cbf1a477d7f64442aa05101ed6203d54 |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-21T14:03:32Z |
| publishDate | 2020-02-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-cbf1a477d7f64442aa05101ed6203d542022-12-21T19:01:17ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522020-02-0180211410.1140/epjc/s10052-020-7619-1Studies of gluon TMDs and their evolution using quarkonium-pair production at the LHCFlorent Scarpa0Daniël Boer1Miguel G. Echevarria2Jean-Philippe Lansberg3Cristian Pisano4Marc Schlegel5Van Swinderen Institute for Particle Physics and Gravity, University of GroningenVan Swinderen Institute for Particle Physics and Gravity, University of GroningenIstituto Nazionale di Fisica Nucleare, Sezione di PaviaIJCLab, CNRS/IN2P3, Université Paris-SaclayDipartimento di Fisica, Università di Cagliari, INFN, Sezione di Cagliari, Cittadella UniversitariaDepartment of Physics, New Mexico State UniversityAbstract $$J/\psi $$ J/ψ - or $$\Upsilon $$ Υ -pair production at the LHC are promising processes to study the gluon transverse momentum distributions (TMDs) which remain very poorly known. In this article, we improve on previous results by including the TMD evolution in the computation of the observables such as the pair-transverse-momentum spectrum and asymmetries arising from the linear polarization of gluons inside unpolarized protons. We show that the azimuthal asymmetries generated by the gluon polarization are reduced compared to the tree level case but are still of measurable size (in the 5–10% range). Such asymmetries should be measurable in the available data sets of $$J/\psi $$ J/ψ pairs and in the future data sets of the high-luminosity LHC for $$\Upsilon $$ Υ pairs.https://doi.org/10.1140/epjc/s10052-020-7619-1 |
| spellingShingle | Florent Scarpa Daniël Boer Miguel G. Echevarria Jean-Philippe Lansberg Cristian Pisano Marc Schlegel Studies of gluon TMDs and their evolution using quarkonium-pair production at the LHC European Physical Journal C: Particles and Fields |
| title | Studies of gluon TMDs and their evolution using quarkonium-pair production at the LHC |
| title_full | Studies of gluon TMDs and their evolution using quarkonium-pair production at the LHC |
| title_fullStr | Studies of gluon TMDs and their evolution using quarkonium-pair production at the LHC |
| title_full_unstemmed | Studies of gluon TMDs and their evolution using quarkonium-pair production at the LHC |
| title_short | Studies of gluon TMDs and their evolution using quarkonium-pair production at the LHC |
| title_sort | studies of gluon tmds and their evolution using quarkonium pair production at the lhc |
| url | https://doi.org/10.1140/epjc/s10052-020-7619-1 |
| work_keys_str_mv | AT florentscarpa studiesofgluontmdsandtheirevolutionusingquarkoniumpairproductionatthelhc AT danielboer studiesofgluontmdsandtheirevolutionusingquarkoniumpairproductionatthelhc AT miguelgechevarria studiesofgluontmdsandtheirevolutionusingquarkoniumpairproductionatthelhc AT jeanphilippelansberg studiesofgluontmdsandtheirevolutionusingquarkoniumpairproductionatthelhc AT cristianpisano studiesofgluontmdsandtheirevolutionusingquarkoniumpairproductionatthelhc AT marcschlegel studiesofgluontmdsandtheirevolutionusingquarkoniumpairproductionatthelhc |