Abstract
Possible approaches to experimentally detecting P-parity violation in polarized proton or deuteron interactions with an unpolarized target are discussed. Within the first approach, a polarized proton or deuteron beam is scattered on a thick internal target deployed in one of rings of the NICA collider, and the spin state of the circulating beam is transformed to the mode of precession in the horizontal plane using an RF spin flipper. In this case, parity-violating effects can be probed by measuring the correlation between the interaction cross section and the particle spin direction. In an alternative experimental approach, beam-particle spins are rotated into the horizontal plane using a spin flipper, and then the beam is extracted to a beamline at a definite stage of spin precession. In this experimental scheme, which can be viewed as more traditional, one then collides the extracted beam with a dense external target and compares the measured cross sections for particles with opposite helicities passing through the target.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
S. Gardner, W. C. Haxton, and B. R. Holstein, “New paradigm for hadronic parity nonconservation and its experimental implications,” Ann. Rev. Nucl. Part. Sci. 67, 69–95 (2017); arXiv:1704.02617. https://doi.org/10.1146/annurev-nucl-041917-033231
S. Kistryn, J. Lang, J. Liechti, T. Maier, R. Muller, F. Nessi-Tedaldi, M. Simonius, J. Smyrski, S. Jaccard, W. Haeberli, and J. Sromicki, “Precision measurement of parity violation in proton proton scattering at 45 MeV,” Phys. Rev. Lett. 58, 1616 (1987). https://doi.org/10.1103/PhysRevLett.58.1616
N. A. Lockyer, T. A. Romanowski, J. D. Bowman, C. M. Hoffman, R. E. Mischke, D. E. Nagle, J. M. Potter, R. L. Talaga, E. C. Swallow, D. M. Alde, D. R. Moffett, and J. Zyskind, “Parity nonconservation in proton nucleus scattering at 6 GeV/c,” Phys. Rev. D 30, 860–871 (1984). https://doi.org/10.1103/PhysRevD.30.860
D. P. Grosnick et al. (E581/704 Collab.), “Measurement of the differences in the total cross-section for antiparallel and parallel longitudinal spins and a measurement of parity nonconservation with incident polarized protons and anti-protons at 200 GeV/c,” Phys. Rev. D 55, 1159–1187 (1997). https://doi.org/10.1103/PhysRevD.55.1159
V. D. Kekelidze, R. Lednicky, V. A. Matveev, I. N. Meshkov, A. S. Sorin, and G. V. Trubnikov, “Three stages of the NICA accelerator complex nuclotron-based ion collider facility,” in Proceedings of the 3rd Large Hadron Collider Physics Conference LHCP 2015, St. Petersburg, Russia, Aug. 31–Sept. 5,2015 (Kurchatov Inst., Gatchina, 2016), pp. 565–569.
I. A. Savin, A. V. Efremov, D. V. Peshekhonov, A. D. Kovalenko, O. V. Teryaev, O. Yu. Shevchenko, A. P. Nagajcev, A. V. Guskov, V. V. Kukhtin, and N. D. Topilin, “Spin physics experiments at NICA-SPD with polarized proton and deuteron beams,” in Proceedings of the 4th International Workshop on Transverse Polarization Phenomena in Hard Processes (Transversity 2014), Cagliari, Italy, June 9–13, 2014, EPJ Web of Conf. 85, 02039 (2015); arXiv:1408.3959 [hep-ex]. https://doi.org/10.1051/epjconf/20158502039
E. Stephenson et al. (JEDI Collab.), “Deuteron polarimeter developments for a storage ring electric dipole moment search,” in Proceedings of the 16th International Workshop on Polarized Sources, Targets, and Polarimetry (PSTP 2015), Bochum, Germany, Sept. 14–18,2015, p. 034. https://doi.org/10.22323/1.243.0034
Z. Bagdasarian et al. (JEDI Collab.), “Measuring the polarization of a rapidly precessing deuteron beam,” Phys. Rev. ST Accel. Beams 17, 052803 (2014); arXiv: 1405.6235 [physics.acc-ph]. https://doi.org/10.1103/PhysRevSTAB.17.052803
I. M. Sitnik, V. I. Volkov, D. A. Kirillov, N. M. Piskunov, and Y. A. Plis, “Precessing deuteron polarization,” Phys. Part. Nucl. Lett. 2, 22–27 (2002).
I. B. Vasserman, P. V. Vorobyov, E. S. Gluskin, P. M. Ivanov, G. Ya. Kezerashvili, I. A. Koop, A. P. Lysenko, A. A. Mikhailichenko, I. N. Nesterenko, E. A. Perevedentsev, A. A. Polunin, S. I. Serednyakov, A. N. Skrinsky, and Yu. M. Shatunov, “Comparison of the electron and positron anomalous magnetic moments: experiment 1987,” in Proceedings of the 8th International Symposium on High-Energy Spin Physics, Minneapolis, Minnesota, USA, Sept. 12–17, 1988, AIP Conf. Proc. 187, 305–318 (2008);
Phys. Lett. B 198, 302 (1987). https://doi.org/10.1063/1.38227, 10.1016/0370-2693(87)91515-2
I. A. Koop and Yu. M. Shatunov, “The spin precession tune spread in the storage ring,” in Proceedings of the 1st EPAC Conference, Rome, Italy, June 7–11, 1988, Conf. Proc. C880607, 738–740 (1988).
N. P. M. Brantjes, V. Dzhordzhadze, R. Gebel, F. Gonnella, F. E. Gray, D. J. van der Hoek, A. Imig, W. L. Kruithof, D. M. Lazarus, A. Lehrach, B. Lorentz, R. Messi, D. Moricciani, W. M. Morse, G. A. Noid, et al., “Correcting systematic errors in high-sensitivity deuteron polarization measurements,” Nucl. Instrum. Methods Phys. Res., Sect. A 664, 49–64 (2012). https://doi.org/10.1016/j.nima.2011.09.055
V. V. Parkhomchuk, M. I. Bryzgunov, A. V. Bubley, A. D. Goncharov, A. P. Denisov, N. S. Kremnev, V. A. Polukhin, A. A. Putmakov, V. B. Reva, and D. N. Skorobogatov, “Design of the 2.5 MV electron cooling system and the potential for increasing NICA collider luminosity,” in Proceedings of the 12th International Scientific Workshop in Memory of Prof. V. P. Sarantsev on Problems of Colliders and Charged Particle Accelerators, Alushta, Russia, Sept. 3–8, 2017, Phys. Part. Nucl. Lett. 15, 793–797 (2018). https://doi.org/10.1134/S1547477118070567
ACKNOWLEDGMENTS
We are grateful to Yu.M. Zharinov and A.V. Otboev for technical assistance.
Funding
This work was supported by the Russian Foundation for Basic Research under grant 18-02-40092 MEGA.
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated by A. Asratyan
Rights and permissions
About this article
Cite this article
Koop, I.A., Milstein, A.I., Nikolaev, N.N. et al. Strategies for Probing P-Parity Violation in Nuclear Collisions at the NICA Accelerator Facility. Phys. Part. Nuclei Lett. 17, 154–159 (2020). https://doi.org/10.1134/S1547477120020107
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1547477120020107