Unveiling the proton spin decomposition at a future electron-ion collider

Aschenauer, E.C.; Sassot, R.; Stratmann, M.

doi:10.1103/PhysRevD.92.094030

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Aschenauer, E.C.; Sassot, R.; Stratmann, M. "Unveiling the proton spin decomposition at a future electron-ion collider" (2015) Physical Review D - Particles, Fields, Gravitation and Cosmology. 92(9)

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Abstract:

We present a detailed assessment of how well a future electron-ion collider could constrain helicity parton distributions in the nucleon and, therefore, unveil the role of the intrinsic spin of quarks and gluons in the proton's spin budget. Any remaining deficit in this decomposition will provide the best indirect constraint on the contribution due to the total orbital angular momenta of quarks and gluons. Specifically, all our studies are performed in the context of global QCD analyses based on realistic pseudodata and in the light of the most recent data obtained from polarized proton-proton collisions at BNL-RHIC that have provided evidence for a significant gluon polarization in the accessible, albeit limited range of momentum fractions. We also present projections on what can be achieved on the gluon's helicity distribution by the end of BNL-RHIC operations. All estimates of current and projected uncertainties are performed with the robust Lagrange multiplier technique. © 2015 American Physical Society.

Registro:

Documento:	Artículo
Título:	Unveiling the proton spin decomposition at a future electron-ion collider
Autor:	Aschenauer, E.C.; Sassot, R.; Stratmann, M.
Filiación:	Physics Department, Brookhaven National Laboratory, Upton, NY 11973, United States Departamento de Física and IFIBA, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 1, Buenos Aires, 1428, Argentina Institute for Theoretical Physics, University of Tübingen, Auf der Morgenstelle 14, Tübingen, 72076, Germany
Año:	2015
Volumen:	92
Número:	9
DOI:	http://dx.doi.org/10.1103/PhysRevD.92.094030
Título revista:	Physical Review D - Particles, Fields, Gravitation and Cosmology
Título revista abreviado:	Phys Rev D Part Fields Gravit Cosmol
ISSN:	15507998
CODEN:	PRVDA
Registro:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v92_n9_p_Aschenauer

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Citas:

---------- APA ----------

Aschenauer, E.C., Sassot, R. & Stratmann, M. (2015) . Unveiling the proton spin decomposition at a future electron-ion collider. Physical Review D - Particles, Fields, Gravitation and Cosmology, 92(9).
http://dx.doi.org/10.1103/PhysRevD.92.094030

---------- CHICAGO ----------

Aschenauer, E.C., Sassot, R., Stratmann, M. "Unveiling the proton spin decomposition at a future electron-ion collider" . Physical Review D - Particles, Fields, Gravitation and Cosmology 92, no. 9 (2015).
http://dx.doi.org/10.1103/PhysRevD.92.094030

---------- MLA ----------

Aschenauer, E.C., Sassot, R., Stratmann, M. "Unveiling the proton spin decomposition at a future electron-ion collider" . Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 92, no. 9, 2015.
http://dx.doi.org/10.1103/PhysRevD.92.094030

---------- VANCOUVER ----------

Aschenauer, E.C., Sassot, R., Stratmann, M. Unveiling the proton spin decomposition at a future electron-ion collider. Phys Rev D Part Fields Gravit Cosmol. 2015;92(9).
http://dx.doi.org/10.1103/PhysRevD.92.094030