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Abstract:

We discuss the impact of recent high-statistics Relativistic Heavy Ion Collider data on the determination of the gluon polarization in the proton in the context of a global QCD analysis of polarized parton distributions. We find evidence for a nonvanishing polarization of gluons in the region of momentum fraction and at the scales mostly probed by the data. Although information from low momentum fractions is presently lacking, this finding is suggestive of a significant contribution of gluon spin to the proton spin, thereby limiting the amount of orbital angular momentum required to balance the proton spin budget. © 2014 American Physical Society.

Registro:

Documento: Artículo
Título:Evidence for polarization of gluons in the proton
Autor:De Florian, D.; Sassot, R.; Stratmann, M.; Vogelsang, W.
Filiación:Departamento de Física and IFIBA, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 1, (1428) Buenos Aires, Argentina
Institute for Theoretical Physics, Tübingen University, Auf der Morgenstelle 14, 72076 Tübingen, Germany
Physics Department, Brookhaven National Laboratory, Upton, NY 11973, United States
Palabras clave:Budget control; Colliding beam accelerators; Polarization; Gluon polarization; Momentum fraction; Orbital angular momentum; Parton distributions; Proton spins; Relativistic Heavy Ion Collider; Protons
Año:2014
Volumen:113
Número:1
DOI: http://dx.doi.org/10.1103/PhysRevLett.113.012001
Título revista:Physical Review Letters
Título revista abreviado:Phys Rev Lett
ISSN:00319007
CODEN:PRLTA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v113_n1_p_DeFlorian

Referencias:

  • Leader, E., Lorcé, C., See, e.g., arXiv:1309.4235, and references therein; Aidala, C.A., Bass, S.D., Hasch, D., Mallot, G.K., (2013) Rev. Mod. Phys., 85, p. 655. , For a review, see, e.g.,. RMPHAT 0034-6861 10.1103/RevModPhys.85.655
  • De Florian, D., Sassot, R., Stratmann, M., Vogelsang, W., (2008) Phys. Rev. Lett., 101, p. 072001. , PRLTAO 0031-9007 10.1103/PhysRevLett.101.072001
  • De Florian, D., Sassot, R., Stratmann, M., Vogelsang, W., (2009) Phys. Rev. D, 80, p. 034030. , PRVDAQ 1550-7998 10.1103/PhysRevD.80.034030
  • Ball, R.D., Forte, S., Guffanti, A., Nocera, E.R., Ridolfi, G., Rojo, J., (2013) Nucl. Phys., B874, p. 36. , (NNPDF Collaboration), (); NUPBBO 0550-3213 10.1016/j.nuclphysb.2013.05. 007
  • Blümlein, J., Böttcher, H., (2010) Nucl. Phys., B841, p. 205. , NUPBBO 0550-3213 10.1016/j.nuclphysb.2010.08.005
  • Leader, E., Sidorov, A.V., Stamenov, D.B., (2010) Phys. Rev. D, 82, p. 114018. , PRVDAQ 1550-7998 10.1103/PhysRevD.82.114018
  • Hirai, M., Kumano, S., (2009) Nucl. Phys., B813, p. 106. , NUPBBO 0550-3213 10.1016/j.nuclphysb.2008.12.026
  • Bourrely, C., Buccella, F., Soffer, J., (2011) Phys. Rev. D, 83, p. 074008. , PRVDAQ 1550-7998 10.1103/PhysRevD.83.074008
  • Jimenez-Delgado, P., Accardi, A., Melnitchouk, W., (2014) Phys. Rev. D, 89, p. 034025. , PRVDAQ 1550-7998 10.1103/PhysRevD.89.034025
  • Aschenauer, E.C., arXiv:1304.0079; Adamczyk, L., (STAR Collaboration), arXiv:1405.5134; Adare, A., (PHENIX Collaboration), arXiv:1402.6296; Adare, A., (2009) Phys. Rev. Lett., 103, p. 012003. , (PHENIX Collaboration),. PRLTAO 0031-9007 10.1103/PhysRevLett.103.012003
  • Adare, A., (2009) Phys. Rev. D, 79, p. 012003. , (PHENIX Collaboration),. PRVDAQ 1550-7998 10.1103/PhysRevD.79.012003
  • Adamczyk, L., (2012) Phys. Rev. D, 86, p. 032006. , (STAR Collaboration),. PRVDAQ 1550-7998 10.1103/PhysRevD.86.032006
  • Alekseev, M.G., (2010) Phys. Lett. B, 690, p. 466. , (COMPASS Collaboration),. PYLBAJ 0370-2693 10.1016/j.physletb.2010.05.069
  • Alekseev, M.G., (2010) Phys. Lett. B, 693, p. 227. , (COMPASS Collaboration),. PYLBAJ 0370-2693 10.1016/j.physletb.2010.08.034
  • De Florian, D., Sassot, R., Stratmann, M., Vogelsang, W., arXiv:1108.3955;; De Florian, D., Sassot, R., Stratmann, M., Vogelsang, W., arXiv:1112.0904; Jager, B., Schafer, A., Stratmann, M., Vogelsang, W., Next-to-leading order QCD corrections to high-pT pion production in longitudinally polarized pp collisions (2003) Physical Review D, 67 (5), p. 054005. , DOI 10.1103/PhysRevD.67.054005
  • De Florian, D., Next-to-leading order QCD corrections to one-hadron production in polarized pp collisions at BNL RHIC (2003) Physical Review D, 67 (5), p. 054004. , DOI 10.1103/PhysRevD.67.054004
  • Jager, B., Stratmann, M., Vogelsang, W., Single-inclusive jet production in polarized pp collisions at Ο(αs3) (2004) Physical Review D, 70 (3), p. 034010. , DOI 10.1103/PhysRevD.70.034010
  • Cacciari, M., Salam, G.P., Soyez, G., J. High Energy Phys., 2008 (4), p. 063. , JHEPFG 1029-8479 10.1088/1126-6708/2008/04/063
  • Mukherjee, A., Vogelsang, W., (2012) Phys. Rev. D, 86, p. 094009. , PRVDAQ 1550-7998 10.1103/PhysRevD.86.094009
  • Martin, A.D., Stirling, W.J., Thorne, R.S., Watt, G., (2009) Eur. Phys. J. C, 63, p. 189. , EPCFFB 1434-6044 10.1140/epjc/s10052-009-1072-5
  • Our new (Equation presented) in Eq. (2) is given by (Equation presented), (Equation presented), (Equation presented), (Equation presented), and (Equation presented). A Fortran code of our new DSSV set is available upon request; Altarelli, G., Ross, G.G., (1988) Phys. Lett. B, 212, p. 391. , PYLBAJ 0370-2693 10.1016/0370-2693(88)91335-4
  • Boer, D., arXiv:1108.1713;; Accardi, A., arXiv:1212.1701; Hatta, Y., Ji, X., Zhao, Y., (2014) Phys. Rev. D, 89, p. 085030. , PRVDAQ 1550-7998 10.1103/PhysRevD.89.085030
  • Hatta, Y., Ji, X., Zhao, Y., (2014) Phys. Rev. D, 89, p. 085030

Citas:

---------- APA ----------
De Florian, D., Sassot, R., Stratmann, M. & Vogelsang, W. (2014) . Evidence for polarization of gluons in the proton. Physical Review Letters, 113(1).
http://dx.doi.org/10.1103/PhysRevLett.113.012001
---------- CHICAGO ----------
De Florian, D., Sassot, R., Stratmann, M., Vogelsang, W. "Evidence for polarization of gluons in the proton" . Physical Review Letters 113, no. 1 (2014).
http://dx.doi.org/10.1103/PhysRevLett.113.012001
---------- MLA ----------
De Florian, D., Sassot, R., Stratmann, M., Vogelsang, W. "Evidence for polarization of gluons in the proton" . Physical Review Letters, vol. 113, no. 1, 2014.
http://dx.doi.org/10.1103/PhysRevLett.113.012001
---------- VANCOUVER ----------
De Florian, D., Sassot, R., Stratmann, M., Vogelsang, W. Evidence for polarization of gluons in the proton. Phys Rev Lett. 2014;113(1).
http://dx.doi.org/10.1103/PhysRevLett.113.012001