Measurement of the tensor analyzing power T20 in inclusive deuteron breakup at 9 GeV/c on hydrogen and carbon

Azhgirey, L. S.; Afanasyev, Sergey; Chernykh, E. V.; Kobushkin, A. P.; Ladygin, V. P.; Nedev, S.; Penchev, L.; Perdrisat, C. F.; Пискунов, Н. М.; Punjabi, V.; Sitnik, I.M.; Stoletov, G.D.; Strokovsky, E. A.; Syamtomov, A. I.; Zaporozhets, S.

doi:10.1016/0370-2693(96)01007-6

Cited by 47 publications

(18 citation statements)

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“…During last 15 years detailed data on A(d, p) differential cross section (DCS) [1]- [2], tensor analizing power, T 20 [3]- [9], and coefficient of polarization transfer, κ 0 [7], [10]- [12], have been obtained. These data together with data obtained from electromagnetic probe, give important information about the deuteron structure in a wide region, including that of a smooth transition from nucleon-meson to quark-gluon picture.…”

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confidence: 99%

“…Direct calculations of MS effects in the DCS demonstrated that it does not change the universal A 2/3 dependence of the DCS and cannot explain experimental data without modification of the deuteron wave function (DWF) at short distances [2]. From the other hand it should be also mensioned that the recent precise measurements of T 20 demonstrates that it has a systematic difference for 1 H and 12 C targets, despite the fact that qualitatively it has similar behavior for different target nuclei [9].…”

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confidence: 99%

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Polarization observables in A(d,p) breakup and quark degrees of freedom in the deuteron

Kobushkin

1998

Physics Letters B

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The differential cross section, the tensor analyzing power, T 20 , and the polarization transfer, κ 0 , in 12 C(d, p) breakup at relativistic energy are calculated within a model which incorporates multiple scattering and Pauli principle at quark level. It is shown that the rescattering and quark exchange affect drastically the polarization observables for kinematical region corresponding to high internal momentum in the deuteron.

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confidence: 99%

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confidence: 99%

Polarization observables in A(d,p) breakup and quark degrees of freedom in the deuteron

Kobushkin

1998

Physics Letters B

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“…Inclusion of 3NF improves a part of the polarization data but breaks other. The spin structure of the np SRCs has been investigated at JINR via the measurements of the tensor analyzing power A yy in deuteron inclusive breakup at different energies in the wide regions of the x F and transverse proton momentum p T [15]. Obtained results were compared with calculations using standard [16] and covariant deuteron wave functions [17], respectively.…”

Section: Abstract Deuteron Induced Reactions At Intermediate Energiementioning

confidence: 99%

“…It can be varied from the beginning to the middle of the pole of the 3SP40 magnet. This configuration can be used for the measurements of the tensor A yy and vector A y analyzing powers (and, possibly, vector polarization transfer coefficient C y y ) in inclusive deuteron breakup, A(d, p)X, at large transverse proton momenta [15] at the highest available energy at Nuclotron; of the tensor A yy and vector A y analyzing powers [44][45][46] (and, possibly, vector polarization transfer coefficient C y y [47]) in the inelastic deuteron scattering, A(d, d )X, in the vicinity of the baryonic resonances excitation; of the tensor A yy and vector A y analyzing powers in the inclusive pion production, A(d, π − )X, [48] also at the highest available energy at Nuclotron. The measurements of the analyzing powers in inclusive deuteron breakup and the inelastic deuteron scattering in the vicinity of the baryonic resonances excitation can be performed simultaneously.…”

Section: Other Possible Reaction At Extracted Deuteron Beammentioning

confidence: 99%

Investigation of reactions using polarized and unpolarized deuteron beam at Nuclotron: current status and perspectives

et al. 2017

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Abstract. Deuteron induced reactions at intermediate energies are investigated at InternalTarget Station (ITS) of Nuclotron. The dp elastic scattering data have been accumulated in the angular range (70 • -120 • ) in c.m from 0.3 to 2.0 GeV of deuteron energy. Part of the obtained results of differential cross sections and analyzing powers of dp elastic scattering are compared with theoretical predictions based on relativistic multi-scattering model. The dp breakup data are obtained with the detection of two outgoing protons at the angles of (19 • -54 • ) in laboratory frame at the deuteron energies from 0.3 to 0.5 GeV in various detector configurations. One of the tools to study spin structure of short range correlations is the measurements of the cross section, tensor analyzing power T 20 and spin correlation parameter C y,y in the d

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“…The spin structure of the np SRCs has been investigated at JINR via the measurements of the tensor analyzing power A yy in deuteron inclusive breakup at different energies in the wide regions of the x F and transverse proton momentum p T [9,10,11,12,13]. The data on the tensor analyzing power A yy obtained in the A(d, p)X reaction at different values of x F ∼0.61, ∼0.67, ∼0.72 and ∼0.78 and plotted as a function of the proton transverse momentum p T are shown in panels a), b), c) and d) in Fig.1, respectively.…”

Section: Introductionmentioning

confidence: 99%

Study of polarization effects at Nuclotron

Ladygin

Janek

Kurilkin

et al. 2016

J. Phys.: Conf. Ser.

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Abstract. The major goal of the upgraded Nuclotron facility is to obtain the information on the equation-of-state for dense nuclear matter playing a key role in the under standing of the collapse supernovae and neutron stars stability. These studies can be performed either in heavy ion collisions or via the short-range few nucleon correlations. The obtained experimental results and future program with the use of polarized deuteron beam and the internal target station are discussed. The polarization studies for the NN, NA and dA reactions with the extracted deuteron beam at the BM@N setup are proposed. The further extension of the polarization program at BM@N is related with the study of the in-medium modification of the polarization for the strange and multi-strange baryons and the spin alignment for vector mesons decaying in hadronic modes. IntroductionThe Nuclotron at JINR will provide beams of heavy ions with energies up to 6 A·GeV for isospin symmetric nuclei, and 4.65 A·GeV for Au nuclei. In central heavy-ion collisions at these energies, nuclear densities of about 4 times nuclear matter density can be reached. These conditions are well suited to investigate the equation-of-state (EOS) of dense nuclear matter which plays a central role for the dynamics of core collapse supernovae and for the stability of neutron stars. The observation of multi-strange hyperons or of light hypernuclei at Nuclotron energies would represent a breakthrough in our understanding of strange matter, and would pave the road for the experimental exploration of the 3-rd dimension of the nuclear chart [1]. These studies are complimentary to the CBM experimental program at SIS100 [2]. Another tool to investigate the EOS at large densities is the study of the short range correlations (SRC) of nucleons in nuclei which is the subject of intensive theoretical and experimental works during last years. Since SRC have densities comparable to the density in the center of a nucleon which is about ρ ∼ 5ρ 0 (ρ 0 ≈ 0.17 fm −3 ), they can be considered as the drops of cold dense nuclear matter [3]. These studies explore a new part of the phase diagram and very essential to understand the evolution of neutron stars.The results obtained at BNL [4], SLAC [5] and JLAB [6,7] clearly demonstrate that more than 90% all nucleons with momenta k ≥ 300 MeV/c belong to 2N SRC; the probability for a given proton with momenta 300 ≤ k ≤ 600 MeV/c to belong to pn correlation is ∼18 times larger than for pp correlations; the probability for a nucleon to have momentum ≥ 300 MeV/c in medium nuclei is ∼25%; 3N SRC are present in nuclei with a significant probability [8]. However, still many open questions persist and further investigations are required both from the

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Measurement of the tensor analyzing power T20 in inclusive deuteron breakup at 9 GeV/c on hydrogen and carbon

Cited by 47 publications

References 25 publications

Polarization observables in A(d,p) breakup and quark degrees of freedom in the deuteron

Polarization observables in A(d,p) breakup and quark degrees of freedom in the deuteron

Investigation of reactions using polarized and unpolarized deuteron beam at Nuclotron: current status and perspectives

Study of polarization effects at Nuclotron

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