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Título:
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Quarkonium TMD fragmentation functions in NRQCD.
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Autores:
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Echevarria, Miguel G. ;
Makris, Yiannis ;
Scimemi, Ignazio
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Tipo de documento:
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texto impreso
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Editorial:
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Springer, 2020-10-26
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Dimensiones:
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application/pdf
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Nota general:
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cc_by
info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Física-Modelos matemáticos
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Materia = Ciencias: Física: Física matemática
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Tipo = Artículo
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Resumen:
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We study the transverse-momentum spectrum of quarkonium production from single light-parton fragmentation mechanism. In the case of semi-inclusive deep inelastic scattering, we observe that there are two possible initiating processes, namely photongluon fusion and light-quark fragmentation. For the second case we derive the factorization theorem, which involves a new hadronic quantity: the quarkonium transverse-momentumdependent fragmentation functions in NRQCD. We calculate their matching onto the non-perturbative long distance matrix elements at the lowest order in the strong-coupling constant, O(alpha(2)(s)). Focusing on the case of the electron-ion collider, we make a comparative phenomenological study of the two production mechanisms and find the regions of the phase space where one is dominant over the other.
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En línea:
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https://eprints.ucm.es/id/eprint/63389/1/Scimeni57libre%2BCC.pdf
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