Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/7684
Title: Measurement of the splitting function in pp and Pb-Pb collisions at ?s N N = 5.02 TeV
Authors: CMS Collaboration
Karapınar, Güler
Keywords: Binary alloys
Transverse momenta
Heavy ion collision
Colliding beam accelerators
Proton–proton collisions
Momentum ratio
Issue Date: Apr-2018
Publisher: American Physical Society
Source: Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., Brandstetter, J. ...CMS Collaboration (2018). Measurement of the splitting function in pp and Pb-Pb collisions at √s N N = 5.02 TeV. Physical Review Letters, 120(14). doi:10.1103/PhysRevLett.120.142302
Abstract: Data from heavy ion collisions suggest that the evolution of a parton shower is modified by interactions with the color charges in the dense partonic medium created in these collisions, but it is not known where in the shower evolution the modifications occur. The momentum ratio of the two leading partons, resolved as subjets, provides information about the parton shower evolution. This substructure observable, known as the splitting function, reflects the process of a parton splitting into two other partons and has been measured for jets with transverse momentum between 140 and 500 GeV, in pp and PbPb collisions at a center-of-mass energy of 5.02 TeV per nucleon pair. In central PbPb collisions, the splitting function indicates a more unbalanced momentum ratio, compared to peripheral PbPb and pp collisions.. The measurements are compared to various predictions from event generators and analytical calculations.
URI: https://doi.org/10.1103/PhysRevLett.120.142302
https://hdl.handle.net/11147/7684
ISSN: 0031-9007
0031-9007
1079-7114
Appears in Collections:Mathematics / Matematik
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Rectorate / Rektörlük
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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