Heavy-ion double charge exchange reactions: A tool toward $0 \nu\beta\beta$ nuclear matrix elements

Cappuzzello, F.; Cavallaro, M.; Agodi, C.; Bondí, M.; Carbone, D.; Cunsolo, A.; Foti, A.

doi:10.1140/epja/i2015-15145-5

Cited by 130 publications

(105 citation statements)

References 77 publications

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“…The precise description of heavyion elastic scattering can play a major role for a precise determination of nuclear matrix elements to be extracted from reaction studies. Pertinent examples are the recent studies of heavy-ion charge exchange reactions and their connection with neutrinoless double beta decay [55,56]…”

Section: Discussionmentioning

confidence: 99%

Important role of projectile excitation in O16+Ni60 and O<

et al. 2018

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The elastic scattering angular distribution of the 16 O+ 60 Ni system at 260 MeV was measured in the range of the Rutherford cross section down to 7 orders of magnitude below. The cross sections of the lowest 2 + and 3 − inelastic states of the target were also measured over a several orders of magnitude range. Coupled channel (CC) calculations were performed and are shown to be compatible with the whole set of data only when including the excitation of the projectile and when the deformations of the imaginary part of the nuclear optical potential are taken into account. Similar results were obtained when the procedure is applied to the existing data on 16 O+ 27 Al elastic and inelastic scattering at 100 and 280 MeV. An analysis in terms of Dynamical Polarization Potentials (DPP) indicate the major role of coupled channel effects in the overlapping surface region of the colliding nuclei.

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Section: Discussionmentioning

confidence: 99%

Important role of projectile excitation in O16+Ni60 and O<

et al. 2018

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“…Also fundamental problems of physics (and nuclear physics) have been studied through nuclear reactions, as the nature of the neutrinos or the nuclear potential itself, as reported in Refs. [3] and [4], respectively. In particular, transfer reactions are an important tool to investigate the correlations between different nuclei and provide information about the corresponding structure.…”

Section: Introductionmentioning

confidence: 99%

Elastic scattering, inelastic excitation, and neutron transfer for Li7+Sn120 at energies around the Coulomb barrier

et al. 2017

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Experimental angular distributions for the 7 Li + 120 Sn elastic and inelastic (projectile and target excitations) scattering, and for the neutron stripping reaction, have been obtained at E LAB = 20, 22, 24, and 26 MeV, covering an energy range around the Coulomb barrier (V (LAB) B ≈ 21.4 MeV). Coupled channel and coupled reaction channel calculations were performed and both describe satisfactorily the experimental data sets. The 1 2 − state 7 Li inelastic excitation (using a rotational model), as well as the projectile coupling to the continuum (α plus a tritium particle) play a fundamental role on the proper description of elastic, inelastic, and transfer channels. Couplings to the one-neutron stripping channel do not significantly affect the theoretical elastic scattering angular distributions. The spectroscopic amplitudes of the transfer channel were obtained through a shell model calculation. The theoretical angular distributions for the one-neutron stripping reaction agreed with the experimental data.

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“…We study the DCE differential cross section of 40 Ca( 18 O, 18 Ne) 40 Ar G.S. reaction measured by the LNS-INFN by the NUMEN collaboration [16]. The theoretical differential cross section can be obtained by an average of the initial spins and sum over final spins,…”

Section: Heavy-ion Double Charge Exchangementioning

confidence: 99%

Two-nucleon transfer and Double Charge Exchange reactions

Santopinto¹,

Vsevolodovna²,

García-Tecocoatzi³

2018

J. Phys.: Conf. Ser.

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Abstract. In this contribution we present a study of a direct and sequential two-nucleon transfer within the microscopic Interacting Boson Model (IBM-2) and Interacting BosonFermion Model (IBFM), respectively. We present our preliminary results for heavy-ion doublecharge-exchange 40 Ca( 18 O, 18 Ne) 40 ArG.S. differential cross section too. IntroductionNeutrinoless double beta decay (0νββ) is one of the most important process that has not been observed yet, and it represents a probe of physics beyond the Standard Model. One open problem is that the 0νββ decay depends on nuclear matrix elements (NMEs) that when evaluated using different nuclear structure models can differ also by about a factor of 2-3 [1]. A better understanding of the nuclear structure will help to improve the model calculation of nuclear reactions and decay processes, such as single beta decay, double beta decay (2νββ), and 0νββ. The knowledge of the internal degrees of freedom is crucial to understand nuclear structure. In order to calculate the competing two-nucleon processes to heavy-ion double charge exchange (DCE), recently we developed the formalism using microscopic IBM-2 for the NUMEN collaboration [2,3,4], and this formalism has been already applied with success to 64 Ni ( 18 O, 16 O) 66 Ni two-neutron transfer as reported here in section 2 and 3. Finally, since our goal is to describe the DCE differential cross section using IBMs for the nuclear part, trying to extract information on NMEs of nuclei involved also in 0νββ, we present here in the last section very preliminary results regarding DCE 40 Ca( 18 O, 18 Ne) 40 Ar G.S. differential cross section.

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Heavy-ion double charge exchange reactions: A tool toward $0 \nu\beta\beta$ nuclear matrix elements

Cited by 130 publications

References 77 publications

Important role of projectile excitation in O16+Ni60 and O<

Important role of projectile excitation in O16+Ni60 and O<

Elastic scattering, inelastic excitation, and neutron transfer for Li7+Sn120 at energies around the Coulomb barrier

Two-nucleon transfer and Double Charge Exchange reactions

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