Journal Article10.1016/0370-2693(94)90973-3
Evidence for virtual Δ++ knock-out from 9Be by 1 GeV protons
A.I. Amelin,M. N. Behr,B. A. Chernyshev,M.G. Gornov,Yu. B. Gurov,S. V. Lapushkin,P. V. Morokhov,V. A. Pechkurov,R.R. Shafigullin,T.D. Shurenkova,V. P. Koptev,M.G. Ryskin,R.A. Eramzhian,K.O. Oganesian +13 more
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TL;DR: In this article, inclusive differential cross sections of 4,6,8 He, 6,7,8 Li formation in p 9 Be interactions at T p = 1 GeV have been measured.
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About: This article is published in Physics Letters B. The article was published on 13 Oct 1994.
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Citations
Study of the isobar configurations in the 12C and 16O ground states
TL;DR: Experimental research on positive-pion photoproduction on the oxygen nucleus in the 16O(γ, π+p) reaction at high recoil momenta of the residual nuclear system was performed and the yield was analyzed using a model that takes Δ-isobar configurations in nuclei ground states into account.
2
Isobar configurations: ΔN correlations versus the independent particle model
TL;DR: In this paper, a comparative analysis of two models for the A ( γ, π N ) B reaction is presented, which take into account the isobar configurations in the ground state of the nuclei: the ΔN correlation model and the quasifree pion photoproduction model.
1
Delta-isobar configurations in 12 C and 16 O nuclei
TL;DR: In this article, a model that takes into account the admixture of isobar states in the nuclear wave function was proposed to estimate the probabilities for the delta-isobar configurations in the ground states of the carbon and oxygen nuclei per nucleon.
1
Spectator isobar production in the $A\left( {\gamma ,\pi NN} \right)B$ reaction
I. Glavanakov,A. Tabachenko +1 more
TL;DR: In this paper, the spectator mechanism of isobar production in the pion photoproduction on nuclei with the emission of two nucleons is analyzed and the two-particle transition operator for nuclei is obtained by the \textit{S}-matrix approach.
Isobar Configurations in the Ground State of Nuclei. Effective Polarization of an Isobar
TL;DR: In this paper, an analysis of the effective polarization of the ∆++ isobar formed in a nucleus as a result of the virtual transition pp→∆++ n, and manifested in the reaction 16O(γ, π+ p)15C, is performed.
References
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H.J. Weber,H. Arenhövel +1 more
TL;DR: A comprehensive review of the role of nucleon resonances in nuclear structure is given with emphasis on the two-, three-, and four-nucleon systems and nuclear matter in this article.
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Nuclear double-beta decay and a new limit on lepton nonconservation
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TL;DR: In this article, it was shown that in spite of the presence of virtual-neutrino closed loops, divergences never arise in the matrix elements for No-NEUTRINO double-$\ensuremath{\beta}$ decay if the basic nuclear constituents (i.e., quarks or nucleons) have isospin not exceeding \textonehalf{} and mean separation greater than zero.
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Light fragment spectra to upper kinematic limits for 300 MeV proton reactions with Be and Ag.
TL;DR: A model-independent invariant cross section analysis applied to the $^{3}$,4He data at 300 MeV is used to illuminate the problems that any statistical model will face in trying to explain fragment production at intermediate energies.
Measurement of charged pion asymmetries in scattering of polarized electrons from polarized 3He.
R.G. Milner,T.W. Donnelly +1 more
TL;DR: In the absence of final-state interactions and nonresonant contributions, it is estimated in a simple quasielastic scattering picture that the ratio of charged pion asymmetries would change by a factor of 2 for a 2% probability to find a ..delta.. in the ground state of /sup 3/He.
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