Angular distributions of elastic scattering of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>Σ</mml:mi><mml:mo>−</mml:mo></mml:msup></mml:math>hyperons from nuclei and the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Σ</mml:mi></mml:math>-nucleus potentials

Harada, Tomohiro; Hirabayashi, Y.

doi:10.1103/physrevc.86.014606

Cited by 2 publications

(2 citation statements)

References 45 publications

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“…The misreconstruction of QE events resulting from many-body dynamics is bound to have an impact on the oscillation analyses of experiments like MiniBooNE, T2K and LBNE [156][157][158]. The bias in the determination of oscillation parameters may remain even after the near detector has been taken into account [159,160].…”

Section: The Role Of 2p2h Excitationsmentioning

confidence: 99%

Progress and open questions in the physics of neutrino cross sections at intermediate energies

2014

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New and more precise measurements of neutrino cross sections have renewed interest in a better understanding of electroweak interactions on nucleons and nuclei. This effort is crucial to achieving the precision goals of the neutrino oscillation program, making new discoveries, like the CP violation in the leptonic sector, possible. We review the recent progress in the physics of neutrino cross sections, putting emphasis on the open questions that arise in the comparison with new experimental data. Following an overview of recent neutrino experiments and future plans, we present some details about the theoretical development in the description of (anti)neutrino-induced quasielastic (QE) scattering and the role of multi-nucleon QE-like mechanisms. We cover not only pion production in nucleons and nuclei but also other inelastic channels including strangeness production and photon emission. Coherent reaction channels on nuclear targets are also discussed. Finally, we briefly describe some of the Monte Carlo event generators, which are at the core of all neutrino oscillation and cross-section measurements.

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Section: The Role Of 2p2h Excitationsmentioning

confidence: 99%

Progress and open questions in the physics of neutrino cross sections at intermediate energies

2014

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“…Note that the angular distribution of the differential cross sections in the − elastic scattering from nuclei provides detailed information to discriminate the nature of the repulsion/attraction inside the nuclear surface in the -nucleus potentials, as discussed in Ref. [56].…”

Section: Effective Volume Integrals Of the -Nucleus Potentialsmentioning

confidence: 99%

Production spectra with a Σ− hyperon in (π−,K+) reactions on light to heavy nuclei

Harada

Hirabayashi

2023

Phys. Rev. C

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We study theoretically production spectra with a − hyperon via (π − , K + ) reactions on 12 C, 28 Si, 58 Ni, 115 In, and 209 Bi targets, using the Green's function method in the framework of a distorted-wave impulse approximation with the optimal Fermi averaging for an elementary π − p → K + − t matrix. Adopting distorted waves obtained by solving a Klein-Gordon equation for π − and K + mesons, we improve and update the calculated spectra of − production cross sections comprehensively in comparison with the data of the KEK-E438 experiment. We use several -nucleus (optical) potentials that are determined by fits to the − atomic data and that take into account the energy dependence arising from the nuclear excitation via N → N scatterings with a hyperon effective mass. The results show that the absolute values and the shapes of these calculated spectra are in excellent agreement with those of the data, so that a mass-number dependence of integrated cross sections on the light-to-heavy targets is well reproduced in our calculations. It confirms that the -nucleus potentials having a repulsion inside the nuclear surface and an attraction outside the nucleus with a sizable absorption are favored in reproducing the data of the nuclear (π − , K + ) spectra and the − atomic x ray simultaneously, whereas it is still difficult to determine the radial distribution of the -nucleus potential inside the nucleus and its strength at the center.

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Angular distributions of elastic scattering ofΣ−hyperons from nuclei and theΣ-nucleus potentials

Cited by 2 publications

References 45 publications

Progress and open questions in the physics of neutrino cross sections at intermediate energies

Progress and open questions in the physics of neutrino cross sections at intermediate energies

Production spectra with a Σ− hyperon in (π−,K+) reactions on light to heavy nuclei

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