Neutrino-nucleus cross section within the extended factorization scheme

Rocco, Noemi; Barbieri, C.; Benhar, Omar; Pace, A. De; Lovato, Alessandro

doi:10.1103/physrevc.99.025502

Cited by 82 publications

(107 citation statements)

References 99 publications

(191 reference statements)

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“…We can now start the discussion about product formulae derived from the Trotter-Suzuki expansion for the time evolution operator. At first order, we find the simple decompositions (13) and (14) presented in the main text…”

Section: Product Formulae: Analytical Boundsmentioning

confidence: 92%

“…Unfortunately, even the most sophisticated modern theory typically provides only the kinematics for the final state lepton, and generally only covers a subset of the experimentally accessible phase space [10]. On classical computers, inclusive scattering in abinitio calculations are obtained via imaginary-time (Euclidean) correlation functions [11,12] or in factorization schemes [13]. These are typically relevant to inclusive scattering only, though some progress has been made towards exclusive processes.…”

Section: Introductionmentioning

confidence: 99%

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Quantum computing for neutrino-nucleus scattering

Roggero

Carlson

et al. 2020

Phys. Rev. D

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Neutrino-nucleus cross section uncertainties are expected to be a dominant systematic in future accelerator neutrino experiments. The cross sections are determined by the linear response of the nucleus to the weak field of the neutrino, and are dominated by energy and distance scales of the order of the separation between nucleons in the nucleus. These response functions are potentially an important early physics application of quantum computers. Here we present an analysis of required resources and expected scaling for scattering cross section calculations. We also examine simple small-scale neutrino-nucleus models on modern quantum hardware. In this paper we use variational methods to obtain the ground state and then implement the relevant time evolution. In order to tame the errors in present-day NISQ devices we explore the use of different error-mitigation techniques to increase the fidelity of the calculations.

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Section: Product Formulae: Analytical Boundsmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Quantum computing for neutrino-nucleus scattering

Roggero

Carlson

et al. 2020

Phys. Rev. D

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“…To avoid potential double-counting with real-pion emission, the Authors of Refs. [27,83,86,87] adopted the prescription of retaining only the real part of the ∆ propagator when computing two-body current processes. In the present work, we keep both the real and imaginary part of the ∆-propagator and we introduce a phenomenological potential to model the ∆ decay in the nucleus.…”

Section: B Inclusion Of Two-body Currentsmentioning

confidence: 99%

“…Over the past few years, the IA was generalized to include the excitation of two particle-two hole final states induced by relativistic meson-exchange currents [25]. This extended factorization scheme (EFS) has been applied to calculate the electroweak inclusive cross sections of carbon and oxygen [26,27].…”

Section: Introductionmentioning

confidence: 99%

Electroweak pion production on nuclei within the extended factorization scheme

et al. 2019

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We have applied the extended factorization scheme to investigate the electroweak pion production on nuclei. The ANL-Osaka model, which was obtained by analyzing the data of πN , γN , N (e, e π) and N (ν, µ π) reactions up to invariant mass W = 2 GeV, is used to generate the matrix elements of current operators relevant to pion-production off the nucleon. Medium effects on the ∆ (1232) component of meson-exchange current are included by using a ∆-nucleus potential determined from the previous ∆-hole model studies of pion-nucleus reactions. Nuclear correlations in the initial target state and in the spectator system(s) are modeled using realistic hole spectral functions. As a first step, we show that the data of 12 C(e, e ) up to the ∆ (1232) region can be described reasonably well. The interplay between the pion production and two-body meson-exchange mechanisms is shown to be essential in improving the agreement with the data in the "dip" region, between the quasielastic and the ∆ (1232) peaks. Predictions for 12 C(ν, µ π) have also been made. They can be used to estimate pion-emission rates in neutrino-nucleus cross section, which constitutes an important systematic uncertainty to the reconstructed neutrino energy. With further improvements of the Metropolis Monte-Carlo techniques to account for final states comprised of more than two particles, our approach can be employed up to W = 2 GeV, where two-pion production and higher mass nucleon resonances must be included for analyzing the data from accelerator-based neutrinooscillation experiments.

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“…Dotted and solid lines show the results obtained from the SF computed with the SCGF and CBF methods, respectively. Taken from Ref [78]…”

mentioning

confidence: 99%

Neutral current neutrino-nucleus scattering: theory

Giusti¹,

Ivanov²

2020

J. Phys. G: Nucl. Part. Phys.

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The treatment of nuclear effects in neutrino-nucleus interactions is one of the main sources of systematic uncertainty for the analysis and interpretation of data of neutrino oscillation experiments. Neutrinos interact with nuclei via charged or neutral currents and both cases must be studied to obtain a complete information. We give an overview of the theoretical work that has been done to describe nuclear effects in neutral-current neutrinonucleus scattering in the kinematic region ranging between beam energies of a few hundreds MeV to a few GeV, which is typical of most ongoing and future accelerator-based neutrino experiments, and where quasielastic scattering is the main interaction mechanism. We review the current status and challenges of the theoretical models, the role and relevance of the contributions of different nuclear effects, and the present status of the comparison between the numerical predictions of the models as well as the available experimental data. We discuss also the sensitivity to the strange form factors of the nucleon and the methods and observables that can allow one to obtain evidence for a possible strange quark contribution from measurements of neutrino and antineutrino-nucleus scattering.

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Neutrino-nucleus cross section within the extended factorization scheme

Cited by 82 publications

References 99 publications

Quantum computing for neutrino-nucleus scattering

Quantum computing for neutrino-nucleus scattering

Electroweak pion production on nuclei within the extended factorization scheme

Neutral current neutrino-nucleus scattering: theory

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