Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/162067
Title: Measurement of charged hadron production in Z-tagged jets in proton-proton collisions at s√=8 TeV
Author: LHCb Collaboration
Calvo Gómez, Míriam
Camboni, Alessandro
Coquereau, Samuel
Garrido Beltrán, Lluís
Gascón Fora, David
Gironella Gironell, Pere
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Vilasis-Cardona, Xavier
Keywords: Hadrons
Col·lisions (Física)
Teoria quàntica de camps
Hadrons
Collisions (Physics)
Quantum field theory
Issue Date: 4-Dec-2019
Publisher: American Physical Society
Abstract: The production of charged hadrons within jets recoiling against a Z boson is measured in proton-proton collision data at ffiffi s p ¼ 8 TeV recorded by the LHCb experiment. The charged-hadron structure of the jet is studied longitudinally and transverse to the jet axis for jets with transverse momentum pT > 20 GeV and in the pseudorapidity range 2.5 < η < 4. These are the first measurements of jet hadronization at these forward rapidities and also the first where the jet is produced in association with a Z boson. In contrast to previous hadronization measurements at the Large Hadron Collider, which are dominated by gluon jets, these measurements probe predominantly light-quark jets which are found to be more longitudinally and transversely collimated with respect to the jet axis when compared to the previous gluon dominated measurements. Therefore, these results provide valuable information on differences between quarks and gluons regarding nonperturbative hadronization dynamics.
Note: Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.123.232001
It is part of: Physical Review Letters, 2019, num. 123, p. 232001
URI: http://hdl.handle.net/2445/162067
Related resource: https://doi.org/10.1103/PhysRevLett.123.232001
ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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