Tensor Correlations Measured in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi>He</mml:mi><mml:mprescripts /><mml:none /><mml:mn>3</mml:mn></mml:mmultiscripts><mml:mo stretchy="false">(</mml:mo><mml:mi>e</mml:mi><mml:mo>,</mml:mo><mml:msup><mml:mi>e</mml:mi><mml:mo>′</mml:mo></mml:msup><mml:mi>p</mml:mi><mml:mi>p</mml:mi><mml:mo stretchy="false">)</mml:mo><mml:mi>n</mml:mi></mml:math>

Baghdasaryan, H.; Weinstein, Larry; Laget, J. M.; Adhikari, K. P.; Aghasyan, M.; Amarian, M.; Anghinolfi, M.; Avakian, H.; Ball, J.; Battaglieri, M.; Bedlinskiy, I.; Bennett, R.; Berman, B. L.; Biselli, A.; Bookwalter, C.; Briscoe, W. J.; Brooks, W. K.; Bültmann, S.; Burkert, Volker; Carman, D. S.; Credé, V.; D’Angelo, A.; Daniel, A.; Dashyan, N.; Vita, R. De; Sanctis, E. De; Deur, A.; Dey, B.; Dickson, R.; Djalali, C.; Dodge, G. E.; Doughty, D.; Dupré, R.; Egiyan, H.; Alaoui, A. El; Fassi, L. El; Eugenio, P.; Fegan, S.; Gabrielyan, M.; Gilfoyle, G. P.; Giovanetti, K. L.; Gohn, W.; Gothe, R. W.; Griffioen, K. A.; Guidal, M.; Guo, L.; Gyurjyan, V.; Hakobyan, H.; Hanretty, C.; Hyde‐Wright, C. E.; Hicks, K.; Holtrop, M.; Ilieva, Y.; Ireland, D. G.; Joo, K. S.; Keller, D.; Khandaker, M.; Khetarpal, P.; Kim, A.; Kim, W.; Klein, A.; Klein, F. J.; Konczykowski, P.; Kubarovsky, V.; Kuhn, S. E.; Kuleshov, S.; Kuznetsov, V.; Kvaltine, N. D.; Livingston, K.; Lu, H. Y.; MacGregor, I. J. D.; Markov, N.; Mayer, M.; McAndrew, J.; McKinnon, B.; Meyer, C. A.; Mikhailov, K.; Mokeev, V.; Moreno, B.; Moriya, K.; Morrison, B.; Moutarde, H.; Munévar, E.; Nadel-Turoński, P.; Nepali, C. S.; Niccolai, S.; Niculescu, G.; Niculescu, I.; Osipenko, M.; Ostrovidov, A. I.; Paremuzyan, R.; Park, K.; Park, S.; Pasyuk, E.; Pereira, S. Anefalos; Pisano, S.; Pogorelko, O.; Pozdniakov, S.; Price, J. W.; Procureur, S.; Protopopescu, D.; Ricco, G.; Ripani, M.; Rosner, G.; Rossi, P.; Sabatié, F.; Salgado, C.; Schumacher, R. A.; Seraydaryan, H.; Smith, G. D.; Sober, D. I.; Sokhan, D.; Stepanyan, S.; Stepanyan, S.; Stoler, P.; Strauch, S.; Taiuti, M.; Tang, W.; Taylor, C.; Tedeschi, D. J.; Ungaro, M.; Vineyard, M. F.; Voutier, E.; Watts, D. P.; Weygand, D. P.; Wood, M. H.; Zhao, B.; Zhao, Z. W.

doi:10.1103/physrevlett.105.222501

Cited by 28 publications

(29 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4; finally, in Fig. 5, the ratio R pp/pn of the correlated pp to pn pairs, extracted from the 3 He(e, e pp)n process [17], is shown. Note that in Figs.…”

Section: Dominates Over the Average Mean-field Configurationmentioning

confidence: 99%

“…Our calculations were performed with nuclear wave functions [13,14] obtained from the solution of the Schrödinger equation containing realistic NN interactions, namely the AV18 [15] and AV8 [16] interactions. We will compare our results with a preliminary analysis of data on 3 He from the CEBAF large acceptance spectrometer (CLAS) collaboration at JLab [17]. The summed-over spin and isospin two-body momentum distributions of a nucleon-nucleon pair is defined as follows:…”

Section: Dominates Over the Average Mean-field Configurationmentioning

confidence: 99%

“…and k rel[17]. The dashed curve represents the ratio of our theoretical momentum distributions and the full curve also includes the final-state interaction in the spectator pp and pn pairs, calculated by the exact solution of the continuum Schroedinger equation with AV18 potential.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Universality of nucleon-nucleon short-range correlations: Two-nucleon momentum distributions in few-body systems

et al. 2012

View full text Add to dashboard Cite

Using realistic wave functions, the proton-neutron and proton-proton momentum distributions in 3 He and 4 He are calculated as a function of the relative, k rel , and center of mass, K c.m. , momenta and the angle between them.For large values of k rel 2 fm −1 and small values of K c.m. 1.0 fm −1 , both distributions are angle independent and decrease with increasing K c.m. , with the pn distribution factorizing into the deuteron momentum distribution times a rapidly decreasing function of K c.m. , in agreement with the two-nucleon (2N ) short-range correlation (SRC) picture. When K c.m. and k rel are both large, the distributions exhibit a strong angle dependence, which is evidence of three-nucleon (3N ) SRC. The predicted center of mass and angular dependence of 2N and 3N SRC should be observable in two-nucleon knock-out processes A(e, e pN)X.Realistic many-body calculations (see, e.g., Refs. [1-3]) show that a mean-field approach, though describing very successfully many properties of nuclei, breaks down when the relative distance r ≡ |r 1 − r 2 | between two generic nucleons "1" and "2" is of the order of r 1.3-1.5 fm. In this region, nucleon-nucleon (NN) motion exhibits short-range correlations (SRC), arising from the interplay between the short-range repulsion and the intermediate range tensor attraction of the NN potential. As a result of such an interplay, the two-nucleon density distribution strongly deviates from the mean-field distribution in that, whereas the latter has a maximum value at zero separation, the former almost vanishes at r = 0, increases sharply with increasing separation, overshoots at r 1.3-1.5 fm the mean-field density, and coincides with it at larger separations. The detailed structure of SRC depends on the spin-isospin state of the NN pair, as well as upon the value of the pair center-of-mass (c.m.) coordinate R c.m. = (r 1 + r 2 )/2. The study of SRC represents one of the main challenges of modern nuclear physics, since the detailed theoretical and experimental knowledge of the short-range structure of nuclei could provide decisive answers to long-standing fundamental questions, such as the formation and structure of cold dense nuclear matter, the origin of the EMC effect, and the role of quark-gluon degrees of freedom in nuclei (see, e.g., Ref.[4]). SRC generate high-momentum components, which are lacking in a mean-field approach, and give rise to peculiar configurations of the nuclear wave function in momentum space [5]. In particular, if nucleons "1" and "2" become strongly correlated at short distances, the local configuration (in the nucleus center-of-mass frame) characterized by k 2 −k 1 , * On leave from the Bogoliubov Lab. Theor. Phys., JINR, 141980 Dubna, Russia, through the program Rientro dei Cervelli of the Italian Ministry of University and Research. dominates over the average mean-field configurationA i=2 k i −k 1 , which is the configuration when the high-momentum nucleon is balanced by all of the remaining A − 1 nucleons. Thus, if a correlated nucleon with momentum ...

show abstract

“…4; finally, in Fig. 5, the ratio R pp/pn of the correlated pp to pn pairs, extracted from the 3 He(e, e pp)n process [17], is shown. Note that in Figs.…”

Section: Dominates Over the Average Mean-field Configurationmentioning

confidence: 99%

Section: Dominates Over the Average Mean-field Configurationmentioning

confidence: 99%

See 1 more Smart Citation

Universality of nucleon-nucleon short-range correlations: Two-nucleon momentum distributions in few-body systems

et al. 2012

View full text Add to dashboard Cite

show abstract

“…Reactions and their kinematic conditions have to be chosen properly, for example, in such a way that the correlated nucleon is removed instantaneously and finalstate interactions are minimized [6,7]. In recent years we have seen a renewed interest in studying short-range correlations using (e,e pp) and (e,e pn) [8,9], (p,pp) and (p,ppn) [10] experiments. One important result from these studies is that the momentum distributions above the Fermi momentum are dominated by tensor correlations [11].…”

Section: Introductionmentioning

confidence: 99%

Universality of short-range nucleon-nucleon correlations

et al. 2011

View full text Add to dashboard Cite

Short-range correlations between nucleon pairs in different spin-isospin channels are investigated for light nuclei using the Argonne V8' interaction. At distances below 1 fm a universal behavior is found for the deuteron, 3H, 3He and for ground and first excited states in 4He. This behavior in coordinate space is reflected by a universal behavior for the high-momentum components in momentum space. The universality indicates that a pairwise renormalization is possible in order to obtain a universal effective two-body interaction that does not scatter to high momentum states. The exact two-body densities are compared with those obtained using the unitary correlation operator method with simple trial wave functions. The effect of three-body correlations due to the tensor force on the two-body densities is discussed.Comment: 13 pages, 17 figures, journal versio

show abstract

“…The dominant contribution to the inclusive A(e, e ) cross section for 1.4 x B 2 stems from pairs with k F k 12 2k F , with k F the Fermi momentum. In that momentum region, the g c (k 12 ) is substantially smaller than f tτ (k 12 ), which causes the tensor correlated pn pairs to dominate [21][22][23].…”

mentioning

confidence: 96%

Counting the number of correlated pairs in a nucleus

Vanhalst

Cosyn²,

Ryckebusch³

2011

Phys. Rev. C

View full text Add to dashboard Cite

We suggest that the number of correlated nucleon pairs in an arbitrary nucleus can be estimated by counting the number of proton-neutron, proton-proton, and neutron-neutron pairs residing in a relative $S$ state. We present numerical calculations of those amounts for the nuclei $^{4}$He, $^{9}$Be, $ ^{12}$C, $ ^{27}$Al, $ ^{40}$Ca, $ ^{48}$Ca, $ ^{56}$Fe, $ ^{63}$Cu, $ ^{108}$Ag, and $ ^{197}$Au. The results are used to predict the values of the ratios of the per-nucleon electron-nucleus inelastic scattering cross section to the deuteron in the kinematic regime where correlations dominate.Comment: 11 pages, 3 figure

show abstract

Tensor Correlations Measured inHe3(e,e′pp)n

Cited by 28 publications

References 25 publications

Universality of nucleon-nucleon short-range correlations: Two-nucleon momentum distributions in few-body systems

Universality of nucleon-nucleon short-range correlations: Two-nucleon momentum distributions in few-body systems

Universality of short-range nucleon-nucleon correlations

Counting the number of correlated pairs in a nucleus

Contact Info

Product

Resources

About