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Transverse momentum dependent fragmenting jet functions with applications to quarkonium production

Bain, Reggie ; Makris, Yiannis ; Mehen, Thomas

The journal of high energy physics, 2016-11, Vol.2016 (11), p.1-26, Article 144 [Revista revisada por pares]

Berlin/Heidelberg: Springer Berlin Heidelberg

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Título:
Transverse momentum dependent fragmenting jet functions with applications to quarkonium production
Autor: Bain, Reggie ; Makris, Yiannis ; Mehen, Thomas
Materias: Classical and Quantum Gravitation ; Cross sections ; Cross sections (physics) ; Elementary Particles ; Factorization ; Formalism ; Fragmentation ; Hadrons ; High energy physics ; jets ; Mathematical analysis ; Physics ; Physics and Astronomy ; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ; Quantum Field Theories ; Quantum Field Theory ; Quantum Physics ; Regular Article - Theoretical Physics ; Relativity Theory ; String Theory ; Transverse momentum
Es parte de: The journal of high energy physics, 2016-11, Vol.2016 (11), p.1-26, Article 144
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
AC52-06NA25396; FG02-05ER41368; 3380012
LA-UR-17-30295
National Science Foundation (NSF)
USDOE Office of Science (SC), Nuclear Physics (NP)
Descripción: A bstract We introduce the transverse momentum dependent fragmenting jet function (TMDFJF), which appears in factorization theorems for cross sections for jets with an identified hadron. These are functions of z , the hadron’s longitudinal momentum fraction, and transverse momentum, p ⊥ , relative to the jet axis. In the framework of Soft-Collinear Effective Theory (SCET) we derive the TMDFJF from both a factorized SCET cross section and the TMD fragmentation function defined in the literature. The TMDFJFs are factorized into distinct collinear and soft-collinear modes by matching onto SCET + . As TMD calculations contain rapidity divergences, both the renormalization group (RG) and rapidity renormalization group (RRG) must be used to provide resummed calculations with next-to-leading-logarithm prime (NLL’) accuracy. We apply our formalism to the production of J/ψ within jets initiated by gluons. In this case the TMDFJF can be calculated in terms of NRQCD (Non-relativistic quantum chromodynamics) fragmentation functions. We find that when the J/ψ carries a significant fraction of the jet energy, the p T and z distributions differ for different NRQCD production mechanisms. Another observable with discriminating power is the average angle that the J/ψ makes with the jet axis.
Editor: Berlin/Heidelberg: Springer Berlin Heidelberg
Idioma: Inglés

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Transverse momentum dependent fragmenting jet functions with applications to quarkonium production

Bain, Reggie ; Makris, Yiannis ; Mehen, Thomas

Berlin/Heidelberg: Springer Berlin Heidelberg

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