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Abstract:

We present a new global QCD analysis of nuclear parton distribution functions and their uncertainties. In addition to the most commonly analyzed data sets for the deep-inelastic scattering of charged leptons off nuclei and Drell-Yan dilepton production, we include also measurements for neutrino-nucleus scattering and inclusive pion production in deuteron-gold collisions. The analysis is performed at next-to-leading order accuracy in perturbative QCD in a general mass variable flavor number scheme, adopting a current set of free nucleon parton distribution functions, defined accordingly, as reference. The emerging picture is one of consistency, where universal nuclear modification factors for each parton flavor reproduce the main features of all data without any significant tension among the different sets. We use the Hessian method to estimate the uncertainties of the obtained nuclear modification factors and examine critically their range of validity in view of the sparse kinematic coverage of the present data. We briefly present several applications of our nuclear parton densities in hard nuclear reactions at BNL-RHIC, CERN-LHC, and a future electron-ion collider. © 2012 American Physical Society.

Registro:

Documento: Artículo
Título:Global analysis of nuclear parton distributions
Autor:De Florian, D.; Sassot, R.; Zurita, P.; Stratmann, M.
Filiación:Departamento de Física and IFIBA, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellón 1, (1428) Buenos Aires, Argentina
Departamento de Física and IFIBA, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabelĺon 1, (1428) Buenos Aires, Argentina
Physics Department, Brookhaven National Laboratory, Upton, NY 11973, United States
Institut für Theoretische Physik, Universität Zürich, CH-8057 Zürich, Switzerland
Año:2012
Volumen:85
Número:7
DOI: http://dx.doi.org/10.1103/PhysRevD.85.074028
Título revista:Physical Review D - Particles, Fields, Gravitation and Cosmology
Título revista abreviado:Phys Rev D Part Fields Gravit Cosmol
ISSN:15507998
CODEN:PRVDA
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_15507998_v85_n7_p_DeFlorian.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v85_n7_p_DeFlorian

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Citas:

---------- APA ----------
De Florian, D., Sassot, R., Zurita, P. & Stratmann, M. (2012) . Global analysis of nuclear parton distributions. Physical Review D - Particles, Fields, Gravitation and Cosmology, 85(7).
http://dx.doi.org/10.1103/PhysRevD.85.074028
---------- CHICAGO ----------
De Florian, D., Sassot, R., Zurita, P., Stratmann, M. "Global analysis of nuclear parton distributions" . Physical Review D - Particles, Fields, Gravitation and Cosmology 85, no. 7 (2012).
http://dx.doi.org/10.1103/PhysRevD.85.074028
---------- MLA ----------
De Florian, D., Sassot, R., Zurita, P., Stratmann, M. "Global analysis of nuclear parton distributions" . Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 85, no. 7, 2012.
http://dx.doi.org/10.1103/PhysRevD.85.074028
---------- VANCOUVER ----------
De Florian, D., Sassot, R., Zurita, P., Stratmann, M. Global analysis of nuclear parton distributions. Phys Rev D Part Fields Gravit Cosmol. 2012;85(7).
http://dx.doi.org/10.1103/PhysRevD.85.074028