Search for color van der Waals force in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Pb</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>208</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mo>+</mml:mo></mml:mrow><mml:mrow><mml:mn>208</mml:mn></mml:m

Villari, A.C.C.; Mittig, W.; Lépine‐Szily, A.; Filho, R. Lichtenthaeler; Auger, G.; Bianchi, L.; Beunard, R.; Casandjian, J. M.; Ciffre, J.L.; Cunsolo, A.; Foti, A.; Gaudard, L.; Lima, C. E. F.; Plagnol, E.; Schutz, Y.; Siemssen, R.H.; Wieleczko, J. P.

doi:10.1103/physrevlett.71.2551

Cited by 21 publications

(31 citation statements)

References 12 publications

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“…We believe it is fair to say that the measuring process is also an essential ingredient to be considered in discussing the classical limit. However, in the present case, the angular precision due to the position resolution of the detectors and the angular resolution of the entire setup was at least one tenth lower than that necessary to observe the period of the Mott oscillations [12], so it is not affecting our results.…”

Section: Application To Experimental Data and Discussionmentioning

confidence: 58%

“…The total dispersion is obtained with the quadratic sum of these two factors as σ total−lab θ = 0.046 • . The angular resolution of the detectors is of the order of 0.01 • [12] and has little influence in the resulting angular dispersion. In Fig.…”

Section: Application To Experimental Data and Discussionmentioning

confidence: 98%

“…The 208 Pb + 208 Pb [12] data are the only set of data to our knowledge which clearly displays the effect of decoherence. In this case the period of the Mott oscillations is rather small, T lab Mott ≈ 0.18 • , and is comparable to the angular dispersion due to the straggling.…”

Section: Application To Experimental Data and Discussionmentioning

confidence: 99%

“…The Mott cross section (dotted line) clearly overestimates the amplitude of the oscillations. Here a slightly different energy is used in the Mott calculations, 572.2 MeV instead of 564.5 MeV, to take into account the presence of non-Coulombic effects [12], such as relativistic effects, electron screening, and vacuum polarizability in the 208 Pb + 208 Pb scattering. The result obtained with the present model, Eq.…”

Section: Application To Experimental Data and Discussionmentioning

confidence: 99%

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Decoherence of quantum kinematical correlations: Elastic scattering of identical particles

et al. 2012

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We include the dynamics of the angular straggling process in the angular distributions of Mott scattering of heavy ions. We model the passage of an incoming nucleus through a target as a diffusion process. It is then possible to derive a simple and physically transparent expression for the angular dispersion due to the straggling. The angular dispersion should be folded with the theoretical Mott cross section to see its effect on the amplitude of the Mott oscillations. Our results agree very well with data of 208 Pb + 208 Pb scattering. We define the "classical" limit as the limit when the angular dispersion due to straggling becomes comparable with the Mott oscillation period and get the disappearance of quantum interference occurring at the limit 0.0501, where ξ stands for the target thickness, Z is the system's charge, and E is the center-of-mass energy. The experiments on lead are very close to this limit. We show that the kinematical correlations due to the identity of the particles is maintained, as it should be, and the action of the environment is to reduce the fringe visibility.

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Section: Application To Experimental Data and Discussionmentioning

confidence: 58%

Section: Application To Experimental Data and Discussionmentioning

confidence: 98%

Section: Application To Experimental Data and Discussionmentioning

confidence: 99%

Section: Application To Experimental Data and Discussionmentioning

confidence: 99%

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Decoherence of quantum kinematical correlations: Elastic scattering of identical particles

et al. 2012

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“…Very slow neutrons will suffer essentially pure s-wave nuclear scattering, while the longer range N-D gravitational force can in principle produce scattering of higher l-waves. The main question is whether interference effects between nuclear and gravitational scattering can be detected, in a fashion similar to the observed interference effects between nuclear and electromagnetic forces in heavy-ion reactions which give rise to 'rainbow' scattering and other such phenomena [13].…”

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confidence: 99%

Probing additional dimensions in the universe with neutron experiments

Frank¹

2004

AIP Conference Proceedings

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We carry out a simple analysis of (n + 3)-dimensional gravity in the context of recent work on 'large' supplementary dimensions and deduce a formula for the expected compactification radius for the n additional dimensions in the universe, as a function of the Planck and the electro-weak scales. We argue that the correspondingly modified gravitational force gives rise to effects that might be within the detection range of dedicated neutron experiments. A scattering analysis of the corresponding modified gravitational forces suggests that slow neutron scattering off atomic nuclei with null spin may provide an experimental test for these ideas.The study of gravity at short range has recently been the subject of numerous theoretical and experimental investigations, sparked by the proposal by Arkani-Hamed, Dimoupoulos, and Dvali (ADD) [1] that gravity may depart from Newton's inverse square law at scales which could be as large as a millimeter. Diverse experimental groups have built refined versions of torsion balance experiments and other ingenious designs to test gravity at submillimeter ranges [2]. On the theoretical front, hundreds of papers have been written, ranging from alternative formulations of the large extra-dimensions framework (LED) [3], to the study of astrophysical constraints and the expected experimental consequences in future high-energy collider experiments to black-hole production and the effect of LED on fundamental symmetries. But perhaps the most remarkable result to date is the fact that no known physical constraints have as yet falsified the LED theories. From the experimental point of view the new measurements have confirmed the validity of Newton's

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Disappearance of Mott Oscillations in Sub-barrier Elastic Scattering of Identical Nuclei and Atomic Ions

et al. 2016

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The scattering of identical nuclei at low energies exhibits conspicuous Mott oscillations which can be used to investigate the presence of components in the predominantly Coulomb interaction arising from several physical effects. It is found that at a certain critical value of the Sommerfeld parameter the Mott oscillations disappear and the cross section becomes quite flat. We call this effect Transverse Isotropy (TI). The critical value of the Sommerfeld parameter at which TI sets in is found to be η c = √ 3s + 2, where s is the spin of the nuclei participating in the scattering. No TI is found in the Mott scattering of identical Fermionic nuclei. The critical center of mass energy corresponding to η c is found to be E c = 0.40 MeV for α + α (s = 0) , 1.2 MeV for 6 Li + 6 LI (s = 1) and 7.1 MeV for 10 B + 10 B (s = 3). We further found that the inclusion of the nuclear interaction induces a significant modification in the TI. We suggest measurements at these sub-barrier energies for the purpose of extracting useful information about the nuclear interaction between light heavy ions. We also suggest extending the study of the TI to the scattering of identical atomic ions.

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Search for color van der Waals force inPb208+208

Cited by 21 publications

References 12 publications

Decoherence of quantum kinematical correlations: Elastic scattering of identical particles

Decoherence of quantum kinematical correlations: Elastic scattering of identical particles

Probing additional dimensions in the universe with neutron experiments

Disappearance of Mott Oscillations in Sub-barrier Elastic Scattering of Identical Nuclei and Atomic Ions

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