Study of the Polarized Gluon Structure of a Proton via Prompt-Photon Production in the SPD Experiment at the NICA Collider

  • A. Rymbekova Joint Institute for Nuclear Research
Keywords: polarized structure of a nucleon, prompt photons, gluons, SPD

Abstract

Photons produced in the hard scattering of partons, named prompt photons, provide information about the internal structure of hadrons. The NICA collider has the possibility to provide new data to study the production of prompt photons in non-polarized and polarized proton-proton collisions, which gives an access to spin-dependent parton distribution functions for gluons. Unpolarized and polarized physics with prompt photons and capabilities of the SPD detector in such measurements is discussed.

References

N. Hammon, B. Ehrnsperger, A. Schaefer. Single-transverse spin asymmetry in prompt photon production. J. Phys. G 24, 991 (1998). https://doi.org/10.1088/0954-3899/24/5/007

J.-W. Qiu, G.F. Sterman. Single transverse spin asymmetries in direct photon production. Nucl. Phys. B 378, 52 (1992). https://doi.org/10.1016/0550-3213(92)90003-T

H.-Y. Cheng, S.-N. Lai. Spin asymmetry in proton proton collisions as a probe of sea and gluon polarization in a proton. Phys. Rev. D 41, 91 (1990). https://doi.org/10.1103/PhysRevD.41.91

G. Bunce, N. Saito, J. Soffer, W. Vogelsang. Prospects for spin physics at RHIC, Ann. Rev. Nucl. Part. Sci. 50, 525В (2000). https://doi.org/10.1146/annurev.nucl.50.1.525

C. Adolph, et al. Leading and next-to-leading order gluon polarization in the nucleon and longitudinal double spin asymmetries from open charm muoproduction. Phys. Rev. D 87, 052018 (2013).

C. Adolph, et al. The spin structure function gp1 of the proton and a test of the Bjorken Sum Rule, Phys. Rev. B 753, (2015).

M. Al-Turany, D. Bertini, R. Bertini, et al. The FairRoot framework, IOP Publishing 396, 022001 (2012). https://doi.org/10.1088/1742-6596/396/2/022001

T. Sjostrand, S. Mrenna, P.Z. Skands. PYTHIA 6.4 Physics and Manual. JHEP 0605, 026 (2006). https://doi.org/10.1088/1126-6708/2006/05/026

D.L. Adams, et al. Measurement of single spin asymmetry for direct photon production in pp collisions at 200-GeV/c. Phys. Lett. B 345, 569 (1995).

Published
2019-09-17
How to Cite
Rymbekova, A. (2019). Study of the Polarized Gluon Structure of a Proton via Prompt-Photon Production in the SPD Experiment at the NICA Collider. Ukrainian Journal of Physics, 64(7), 631. https://doi.org/10.15407/ujpe64.7.631
Section
New Trends in High-Energy Physics (Conference materials)