Inclusive charged-current neutrino-nucleus reactions calculated with the relativistic quasiparticle random-phase approximation

Paar, Nils; Vretenar, Dario; Marketin, Tomislav; Ring, P.

doi:10.1103/physrevc.77.024608

Cited by 84 publications

(158 citation statements)

References 68 publications

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“…Moreover, the isobaric analog states (IAS) can be used to study the isospin corrections for the superallowed β decays [10,11] and hence to test unitarity of the Cabibbo-Kobayashi-Maskawa matrix. Furthermore, the properties of charge-exchange excitations are essential to predict many nuclear inputs of astrophysics, such as the nuclear β-decay half-lives, neutrino-nucleus cross sections, and electron-capture cross sections [12][13][14][15]. Therefore, nuclear charge-exchange excitations have become one of the hottest topics in nuclear physics and astrophysics.…”

Section: Introductionmentioning

confidence: 99%

Self-consistent relativistic quasiparticle random-phase approximation and its applications to charge-exchange excitations

Niu

Liang

et al. 2017

Phys. Rev. C

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The self-consistent quasiparticle random-phase approximation (QRPA) approach is formulated in the canonical single-nucleon basis of the relativistic Hatree-Fock-Bogoliubov (RHFB) theory.This approach is applied to study the isobaric analog states (IAS) and Gamov-Teller resonances (GTR) by taking Sn isotopes as examples. It is found that self-consistent treatment of the particleparticle residual interaction is essential to concentrate the IAS in a single peak for open-shell nuclei and the Coulomb exchange term is very important to predict the IAS energies. For the GTR, the isovector pairing can increase the calculated GTR energy, while the isoscalar pairing has an important influence on the low-lying tail of the GT transition. Furthermore, the QRPA approach is employed to predict nuclear β-decay half-lives. With an isospin-dependent pairing interaction in the isoscalar channel, the RHFB+QRPA approach almost completely reproduces the experimental β-decay half-lives for nuclei up to the Sn isotopes with half-lives smaller than one second. Large discrepancies are found for the Ni, Zn, and Ge isotopes with neutron number smaller than 50, as well as the Sn isotopes with neutron number smaller than 82. The potential reasons for these discrepancies are discussed in detail.

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Section: Introductionmentioning

confidence: 99%

Self-consistent relativistic quasiparticle random-phase approximation and its applications to charge-exchange excitations

Niu

Liang

et al. 2017

Phys. Rev. C

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“…This form easily reduces to the result usually used in the proton-neutron QRPA (pnQRPA) when the np pairing correlations are removed [35] …”

Section: Qrpa Frameworkmentioning

confidence: 99%

“…[33,34]. For CC reactions we multiplied by the Cabibbo angle cos 2 θ c and took account of the Coulomb distortion of the outgoing leptons [19,35].…”

Section: Qrpa Frameworkmentioning

confidence: 99%

Neutrino induced reactions forν-process nucleosynthesis of92Nb and98Tc

Cheoun

Hayakawa

et al. 2012

Phys. Rev. C

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“…This framework, based on the covariant energy density functional theory, is a charge-exchange extension of the relativistic quasiparticle RPA formulated in the canonical basis of the RHB model [20]. The RHB + pn-RQRPA have already been successfully applied to the analysis of the Fermi and the Gamow-Teller response [21], β-decay half-lives [22,23], neutrino-nucleus cross-sections [24], total muon capture rates [25], and electron capture rates [26].…”

Section: Introductionmentioning

confidence: 99%

Role of momentum transfer in the quenching of the Gamow-Teller strength

Marketin¹,

Martínez-Pinedo²,

Paar³

et al. 2012

AIP Conference Proceedings

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Background: Differential cross sections for the (p, n) and (n, p) reactions on 90 Zr over the interval of 0 − 50 MeV excitation energy were used to determine the corresponding GT strengths, and the resulting quenching factor ≈ 0.9 with respect to the Ikeda sum rule. In this procedure the contribution of the isovector spin monopole (IVSM) strength was subtracted from the total strength without taking into account the interference between the GT and the IVSM modes.Purpose: To determine the quantitative effect of the IVSM excitation mode on the L = 0 strength in charge-exchange reactions on several closed-shell nuclei and the Sn isotopic chain.Method: The fully consistent relativistic Hartree-Bogoliubov (RHB) model + proton-neutron quasiparticle random phase approximation (pn-RQRPA) is employed in the calculation of transition strength in the β − and β + channels.Results: The inclusion of the higher-order terms, that include the effect of finite momentum transfer, in the transition operator shifts a portion of the strength to the high-energy region above the GT resonance. The total strength is slightly enhanced in nuclei with small neutron-to-proton ratio but remains unchanged with increasing neutron excess. Conclusions:Terms that include momentum transfer in the transition operator act mostly to shift the strength to high excitation energies, but hardly affect the total strength. Based on the strength obtained using the full L = 0 transition operator in the pn-RQRPA calculation, we have estimated the impact of the IVSM on the strength measured in the charge-exchagne reactions on 90 Zr and found that the data are consistent with the Ikeda sum rule.

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Inclusive charged-current neutrino-nucleus reactions calculated with the relativistic quasiparticle random-phase approximation

Cited by 84 publications

References 68 publications

Self-consistent relativistic quasiparticle random-phase approximation and its applications to charge-exchange excitations

Self-consistent relativistic quasiparticle random-phase approximation and its applications to charge-exchange excitations

Neutrino induced reactions forν-process nucleosynthesis of92Nb and98Tc

Role of momentum transfer in the quenching of the Gamow-Teller strength

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