A New Parameterization of the Nucleon Elastic Form Factors

Bradford, R.; Bodek, A.; Budd, H. S.; Arrington, J.

doi:10.1016/j.nuclphysbps.2006.08.028

Cited by 287 publications

(354 citation statements)

References 13 publications

(10 reference statements)

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“…As shown in Fig. 9, the dipole parameterization yields the cross sections higher than the BBBA05 one [9] used in this article. The discrepancy at the QE peak is ∼3.2% for beam energy 350 MeV and ∼3.5% for 841 MeV.…”

Section: General Remarksmentioning

confidence: 81%

“…The form factors F i, t = F i, t (q 2 ) are in turn expressed by the appropriate electric G e, t and magnetic G m, t form factors [9].…”

Section: A General Informationmentioning

confidence: 99%

“…[9]. Considering neutrino interactions, we apply the de Forest prescription (3) but do not restore conservation of the vector current.…”

Section: A General Informationmentioning

confidence: 99%

“…The outcome of numerical calculations depends on several assumptions which specify the implementation of the SF model. We apply the recent BBBA05 parameterization of the proton and neutron form factors [9]. The off-shell hadronic current matrix elements are evaluated with the use of the standard de Forest prescription [10].…”

Section: Introductionmentioning

confidence: 99%

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Construction of spectral functions for medium-mass nuclei

2008

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This article is aimed at improving the description of lepton-nucleus interactions in the sub-GeV energy range. Approximate spectral functions for oxygen, calcium, and argon are constructed and used to obtain the electron cross sections in a given scattering angle. Comparison with a sample of available experimental data shows satisfactory agreement. Discrepancy between the presented model and the systematic computations available for oxygen [O. Benhar et al., Phys. Rev. D 72, 053005 (2005)] is also found to be very small. Analysis of appropriate kinematical regions leads to the conclusion that the obtained argon spectral function should describe well neutrino scattering in the 800-MeV energy region. Several approximations used in the model are critically reviewed. All the details needed to implement the presented approach in Monte Carlo simulations are given.

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Section: General Remarksmentioning

confidence: 81%

“…The form factors F i, t = F i, t (q 2 ) are in turn expressed by the appropriate electric G e, t and magnetic G m, t form factors [9].…”

Section: A General Informationmentioning

confidence: 99%

“…[9]. Considering neutrino interactions, we apply the de Forest prescription (3) but do not restore conservation of the vector current.…”

Section: A General Informationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Construction of spectral functions for medium-mass nuclei

2008

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“…In order to take into account the fact that the target nucleon is in a nucleus, the relativistic Fermi gas (RFG) model by Smith and Moniz [27,28] is used. The model uses dipole axial form factors and the vector form factors derived from electron scattering experiments [29]. The default quasielastic axial mass, M QE A , is 1.21 GeV=c 2 and the default Fermi momenta for the two dominant target nuclei carbon and oxygen are 217 and 225 MeV=c, respectively.…”

Section: A Neutrino Interaction Modelmentioning

confidence: 99%

Measurements of neutrino oscillation in appearance and disappearance channels by the T2K experiment with6.6×1020protons on target

Abe¹,

Adam²,

Aihara³

et al. 2015

Phys. Rev. D

278

376

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We report on measurements of neutrino oscillation using data from the T2K long-baseline neutrino experiment collected between 2010 and 2013. In an analysis of muon neutrino disappearance alone, we find the following estimates and 68% confidence intervals for the two possible mass hierarchies: normal hierarchy∶ sin 2 θ 23 ¼ 0.514 þ0.055 −0.056 and Δm 2 32 ¼ ð2.51 AE 0.10Þ × 10 −3 eV 2 =c 4 and inverted hierarchy∶ sin 2 θ 23 ¼ 0.511 AE 0.055 and Δm 2 13 ¼ ð2.48 AE 0.10Þ × 10 −3 eV 2 =c 4 . The analysis accounts for multinucleon mechanisms in neutrino interactions which were found to introduce negligible bias. We describe our first analyses that combine measurements of muon neutrino disappearance and electron neutrino appearance to estimate four oscillation parameters, jΔm 2 j, sin 2 θ 23 , sin 2 θ 13 , δ CP , and the mass hierarchy. Frequentist and Bayesian intervals are presented for combinations of these parameters, with and without including recent reactor measurements. At 90% confidence level and including reactor measurements, we exclude the region δ CP ¼ ½0.15; 0.83 π for normal hierarchy and δ CP ¼ ½−0.08; 1.09 π for inverted hierarchy. The T2K and reactor data weakly favor the normal hierarchy with a Bayes factor of 2.2. The most probable values and 68% one-dimensional credible intervals for the other oscillation parameters, when reactor data are included, are sin 2 θ 23 ¼ 0.528 þ0.055 −0.038 and jΔm 2 32 j ¼ ð2.51 AE 0.11Þ × 10 −3 eV 2 =c 4 .

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