Vector analyzing powers of the deuteron-proton elastic scattering and breakup at 100 MeV

Stephan, E.; Kistryn, S.; Biegun, A.; Bodek, K.; Ciepał, I.; Deltuva, A.; Eslami, Mohammad H.; Fonseca, A. C.; Gašparić, I.; Golak, J.; Joulaeizadeh, L.; Kalantar‐Nayestanaki, N.; Kamada, H.; Kłos, B.; Kozela, A.; Messchendorp, J. G.; Moeini, H.; Nogga, A.; Parol, W.; Ramazani-Moghaddam-Arani, A.; Skibiński, R.; Sworst, R.; Wilczek, A.; Witała, H.; Zejma, J.

doi:10.1140/epja/i2013-13036-5

Cited by 18 publications

(21 citation statements)

References 68 publications

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“…This detection system is capable of measuring the energy and the scattering angles of all the reaction yields of three and four-body final states in coincidence. A series of experiments has been conducted using BINA to study the deuteron break-up channel using polarized proton and deuteron beams in a wide range of energies between 50 and 190 MeV/nucleon [29][30][31][32][33]. In this article, we present the measurements of the analyzing powers of the protondeuteron break-up reaction obtained with a proton-beam energy of 190 MeV.…”

Section: Introductionmentioning

confidence: 99%

Analyzing powers in $$d(\vec {p}, pp)n$$ at intermediate and large scattering angles at 190 MeV

et al. 2020

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Understanding of the exact nature of three-nucleon forces is the most challenging topic in the field of nuclear physics. Three-nucleon break-up reaction is a good tool to look into the underlying dynamics of the nuclear force, thanks to its rich kinematical phase space which has different levels of sensitivity to three-nucleon force effects. The recent studies on few-nucleon systems have revealed that the current nuclear force models cannot describe nucleon-deuteron scattering data accurately. In the present work, the analyzing powers of the proton-deuteron break-up reaction obtained using a 190 MeV polarized proton beam will be discussed. We present for the first time the vector analyzing powers for the kinematics in which one of the protons scatters to intermediate and large scattering angles at this energy. The results are particularly useful to study the high-momentum components of the nuclear force. The results show a fairly good agreement with various theoretical predictions for both intermediate and large scattering angles of the break-up phase space.PACS. 21.45.+v Few-body systems -13.75.Cs Nucleon-nucleon interactions arXiv:1910.13605v1 [nucl-ex]

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Section: Introductionmentioning

confidence: 99%

Analyzing powers in $$d(\vec {p}, pp)n$$ at intermediate and large scattering angles at 190 MeV

et al. 2020

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“…By taking the sum and difference of f ξ,φ12 (φ) and f ξ,−φ12 (φ) in combination with the results of Eq. 5, the following combination of asymmetries for mirror configurations (ξ,φ 12 ) and (ξ,−φ 12 ) can be obtained [23,32,33]:…”

Section: Discussionmentioning

confidence: 99%

A Comprehensive Measurement of Analyzing Powers in the Proton-Deuteron Break-Up Channel at 135 MeV

Tavakoli-Zaniani

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Eslami‐Kalantari

et al. 2020

Recent Progress in Few-Body Physics

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A selection of measured cross sections and vector analyzing powers, Ax and Ay, are presented for the pd break-up reaction. The data are taken with a polarized proton beam energy of 135 MeV using the Big Instrument for Nuclear-polarization Analysis (BINA) at KVI, the Netherlands. With this setup, Ax is extracted for the first time for a large range of energies as well as polar and azimuthal angles of the two outgoing protons. For most of the configurations, the results at small and large relative azimuthal angles differ in behavior when comparing experimental data with the theoretical calculations. We also performed a more global comparison of our data with theoretical calculations using a chi-square (χ 2) analysis. The cross-section results show huge values of χ 2 /d.o.f.. The absolute values of χ 2 /d.o.f. for the components of vector analyzing powers, Ax and Ay, are smaller than the ones for the cross section, partly due to larger uncertainties for these observables. However, also for these observables no satisfactory agreement is found for all angular combinations. This implies that the present models of a three-nucleon force are not able to provide a satisfactory description of experimental data.

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“…In particular, the differential cross section in proton-deuteron scattering revealed a huge sensitivity to higher-order contribution that go beyond the pairwise NN interaction [14]. Moreover, Faddeev calculations solely based on state-ofthe-art NN potentials of various spin observables in this reaction failed to describe the experiment data [8,[15][16][17][18][19][20][21][22][23][24][25][26][27]. Figure 1.4 shows the comparison between the data to theoretical predictions based on modern NN forces and their combinations with 3NF for pd elastic scattering at 108 MeV [20].…”

Section: The Three-nucleon Systemsmentioning

confidence: 99%

“…By taking the sum and difference of f ξ,φ 12 (φ) and f ξ,φ 12 (φ) in combination with the results of Eq. 4.4, the following combination of asymmetries for mirror configurations (ξ , φ 12 ) and (ξ , −φ 12 ) can be obtained [26,27]:…”

Section: The Vector Analyzing Powersmentioning

confidence: 99%

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Proton-deuteron break-up studies with BINA and a review of three-nucleon database

Tavakoli-Zaniani

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Vector analyzing powers of the deuteron-proton elastic scattering and breakup at 100 MeV

Cited by 18 publications

References 68 publications

Analyzing powers in $$d(\vec {p}, pp)n$$ at intermediate and large scattering angles at 190 MeV

Analyzing powers in $$d(\vec {p}, pp)n$$ at intermediate and large scattering angles at 190 MeV

A Comprehensive Measurement of Analyzing Powers in the Proton-Deuteron Break-Up Channel at 135 MeV

Proton-deuteron break-up studies with BINA and a review of three-nucleon database

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