Low-energy spin-physics experiments with polarized beams and targets at the COSY storage ring

Lenisa, P.; Rathmann, F.; Barion, L.; Barsov, S.; Bertelli, Susanna; Carassiti, V.; Ciullo, G.; Contalbrigo, M.; Ramusino, A. Cotta; Dymov, S.; Engels, R.; Eversheim, D.; Gebel, R.; Grigoryev, K.; Haidenbauer, J.; Hejny, V.; Jagdfeld, Heinz; Kacharava, A.; Keshelashvili, I.; Kononov, A. I.; Krings, T.; Куликов, А. И.; Lehrach, A.; Lorentz, B.; Lomidze, N.; Macharashvili, G.; Malaguti, R.; Martin, S.; Merzliakov, S.; Mikirtychiants, S.; Nass, A.; Nikolaev, N. N.; Pesce, A.; Prasuhn, D.; Semke, Larisa; Squerzanti, S.; Soltner, H.; Statera, M.; Steffens, E.; Ströher, H.; Tabidze, M.; Tagliente, G.; Thörngren-Engblom, P.; Trusov, S.; Uzikov, Yu. N.; Valdau, Yu.; Weidemann, Christian; Wüstner, P.; Żuprański, P.

doi:10.1140/epjti/s40485-019-0051-y

Cited by 15 publications

(9 citation statements)

References 35 publications

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“…An outstanding record of experimentation with polarized deuterons at the Nuclotron is noteworthy [408,409]. Our starting point was the PV studies, but the project outgrew its original boundary: it was understood that the precessing polarization deuterons can give an access to tests of still another fundamental symmetry the time reversal invariance [410,411]. Specifically, one can search for the semistrong T-and CP-violating, P-conserving and flavor-conserving interaction, suggested by Okun [412], Prentki & Veltman [413], and Lee & Wolfenstein [414].…”

Section: Discussionmentioning

confidence: 99%

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Possible Studies at the First Stage of the NICA Collider Operation with Polarized and Unpolarized Proton and Deuteron Beams

Abramov

Aleshko²,

Baskov

et al. 2021

Phys. Part. Nuclei

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Nuclotron based Ion Collider fAcility (NICA) project is in progress at the Joint Institute for Nuclear Research and will start experiments with heavy ions. In the context of the NICA Hadronic Physics programme double polarized pp-, dd-and pd-collisions even at lower energies of √ sNN = 3.4 − 10 GeV, which will be accessible already at the initial stage of experiments,are essential tools for precise understanding the spin dependence of the nucleon-nucleon strong interactions, in both elastic and deep-inelastic regimes. A special interest is interaction in few baryon systems at double strangeness, charm and beauty thresholds.For instance, polarized large-angle elastic pp and pn scattering near the charm threshold allows one to get an access to properties of possible exotic multiquark states and their relation to the states recently observed at LHCb.Large angle scattering of protons and deuterons on the deuteron contains unique information on the short-range structure of the deuteron, its non-nucleonic degrees of freedom and also on color transparency phenomenon. Furthermore, double polarized proton-deuteron scattering offer a possibility to test the Standard Model through the search for time-invariance (or CP-invariance under CPT symmetry) violation and parity-violation in single-polarized scattering. This paper contains suggestions for experiments with usage of the Spin Physics Detector (SPD) and discusses perspectives of the first stage of the SPD Programme. This includes experiments with non-polarized beams too as well as collisions like 12 С-12 С and 40 Сa-40 Ca.9 Multiquark correlations and exotic hadron state production 9 9.1 Multiquark correlations and exotic state production at SPD NICA . . . .

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Section: Discussionmentioning

confidence: 99%

“…However, it is the double-polarization observable, and search for semistrong CP-violation with stored polarized deuterons requires the internal polarized hydrogen target [410].…”

Section: Discussionmentioning

confidence: 99%

Possible Studies at the First Stage of the NICA Collider Operation with Polarized and Unpolarized Proton and Deuteron Beams

Abramov

Aleshko²,

Baskov

et al. 2021

Phys. Part. Nuclei

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“…The spin-filtering test will require also the installation of a couple of skew-quadrupoles (already existing) in COSY to compensate for the coupling effect of the snake and to allow for the beam-lifetimes required by a spin-filtering test. In preparation of the spin filtering test, the PAX detector [60] has also to be installed at the PAX interaction point and fully commissioned. The detector system is compatible both with the longitudinal spin-filtering experiments at COSY and the following experiments with antiprotons.…”

Section: Methodsmentioning

confidence: 99%

Spin Physics at COSY (2021-2024 and beyond) -- Pathfinder investigations toward an EDM storage ring and Spin-for-FAIR

Gebel,

Hejny,

Kacharava

et al. 2021

Preprint

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The unique global feature of COSY is its ability to accelerate, store and manipulate polarized proton and deuteron beams. In the recent past, these beams have been used primarily for precision measurements, in particular in connection with the study of charged particle EDMs (Electric Dipole Moment) in storage rings. The role of COSY as a R&D facility and for initial (static and oscillating) EDM measurements can hardly be overestimated. Unfortunately, as a consequence of the strategic decisions of Forschungszentrum Jülich and the subsequent "TransFAIR" agreement between FZJ and GSI Darmstadt, it is currently planned to stop the operation of COSY by the end of 2024. The various groups working with polarized beams at COSY felt it important to collect information on essential measurements to be performed until the termination of machine operation. These experiments, briefly described in this document along with an estimate of the beam time required, serve as pathfinder investigations toward an EDM storage ring and Spin for FAIR.

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“…Afterwards, the polarized D or HD molecules can be frozen on a cold surface to collect and store enough fuel for further fusion tests. The experience gained with polarized atomic beam sources for the production of polarized nuclear targets and their diagnostics in previous experiments like HER-MES@DESY [10], and recent ones like ANKE@COSY [11], or PAX@COSY [12], will be exploited.…”

Section: Pos(pstp2019)002mentioning

confidence: 99%

The PREFER (Polarization REsearch for Fusion Experiments and Reactors) - collaboration: purposes and present status

Ciullo¹,

Barion²,

Statera³

et al. 2020

Proceedings of the 18th International Workshop on Polarized Sources, Targets, and Polarimetry — PoS(PSTP2019)

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Low-energy spin-physics experiments with polarized beams and targets at the COSY storage ring

Cited by 15 publications

References 35 publications

Possible Studies at the First Stage of the NICA Collider Operation with Polarized and Unpolarized Proton and Deuteron Beams

Possible Studies at the First Stage of the NICA Collider Operation with Polarized and Unpolarized Proton and Deuteron Beams

Spin Physics at COSY (2021-2024 and beyond) -- Pathfinder investigations toward an EDM storage ring and Spin-for-FAIR

The PREFER (Polarization REsearch for Fusion Experiments and Reactors) - collaboration: purposes and present status

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