Measurement of the quasielastic axial vector mass in neutrino interactions on oxygen

Gran, R.; Jeon, E. J.; Aliu, E.; Andringa, S.; Aoki, Shigeki; Argyriades, J.; Asakura, K.; Ashie, R.; Berghaus, F.; Berns, H.; Bhang, H.; Blondel, A.; Borghi, S.; Bouchez, J.; Burguet–Castell, J.; Casper, D.; Catala, J.; Cavata, C.; Cervera, A.; Chen, S. M.; Cho, K. O.; Choi, J. H.; Dore, U.; Curull, X. Espinal; Fechner, M.; Fernández, E.; Fukuda, Y.; Gómez-Cadenas, J. J.; Hara, T.; Hasegawa, M.; Hasegawa, T.; Hayashi, Kenji; Hayato, Y.; Helmer, R. L.; Hiraide, K.; Hosaka, J.; Ichikawa, A. K.; Iinuma, Munekazu; Ikeda, Akira; Inagaki, T.; Ishida, Toru; Ishihara, K.; Ishii, T.; Ishitsuka, M.; Itow, Y.; Iwashita, T.; Jang, H. I.; Jeong, In Seok; Joo, K. K.; Jover, G.; Jung, C. K.; Kajita, T.; Kameda, J.; Kaneyuki, K.; Kato, I.; Kearns, E.; Kerr, D.; Kim, C. O.; Khabibullin, M.; Khotjantsev, A.; Kiełczewska, D.; Kim, J. Y.; Kim, S. B.; Kitching, P.; Kobayashi, Kazuyoshi; Kobayashi, Toshio; Konaka, A.; Koshio, Y.; Kropp, W. R.; Kubota, Jun; Kudenko, Y.; Kuno, Y.; Kurimoto, Yoshinori; Kutter, T.; Learned, J. G.; Likhoded, S.; Lim, I. T.; Loverre, P.; Ludovici, L.; Maesaka, H.; Mallet, J.; Mariani, C.; Matsuno, S.; Matveev, V.; Mahn, Kendall; McGrew, C.; Mikheyev, S.; Minamino, A.; Mine, S.; Mineev, O.; Mitsuda, C.; Miura, Makoto; Moriguchi, Y.; Morita, T.; Moriyama, S.; Nakadaira, T.; Nakahata, M.; Nakamura, K.; Nakano, I.; Nakaya, T.; Nakayama, S.; Namba, T.; Nambu, R.; Nawang, S.; Nishikawa, K.; Nitta, K.; Nova, F.; Novella, P.; Obayashi, Y.; Okada, Atsushi; Okumura, K.; Oser, S. M.; Oyama, Y.; Pac, M. Y.; Pierre, F.; Rodríguez, A.; Saji, C.; Sakuda, M.; Sanchez, F. J. Munoz; Sarrat, A.; Sasaki, T.; Sato, H.; Scholberg, K.; Schroeter, R.; Sekiguchi, M.; Shiozawa, M.; Shiraishi, Kiyoshi; Sitjes, G.; Smy, M. B.; Sobel, H. W.; Sorel, M.; Stone, J. L.; Sulak, L.; Suzuki, A.; Suzuki, Y.; Takahashi, Takuya; Takenaga, Y.; Takeuchi, Y.; Taki, K.; Takubo, Y.; Tamura, N.; Tanaka, M.; Terri, R.; T’Jampens, S.; Tornero-López, A.; Totsuka, Y.; Ueda, S.; Vagins, M. R.; Whitehead, L.; Walter, C. W.; Wang, W.; Wilkes, R. J.; Yamada, S.; Yamamoto, Shuji; Yanagisawa, C.; Yershov, N.; Yokoyama, Hiromi; Yokoyama, M.; Yoo, J.; Yoshida, Masato; Zalipska, J.

doi:10.1103/physrevd.74.052002

Cited by 175 publications

(113 citation statements)

References 34 publications

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“…Until recently the consensus value for the axial mass was m A = 1.025 ± 0.021 GeV [25]. This is somewhat in contrast with values reported by K2K [26] of m A = 1.20 ± 0.12 GeV and MiniBooNE [27] of m A = 1.23 ± 0.20 GeV. One possible explanation, put forth in [27], is that the old data was mainly obtained on Deuterium, where nuclear effects are very small, whereas the new data used Oxygen (K2K) or Carbon (MiniBooNE).…”

Section: Jhep03(2008)021contrasting

confidence: 55%

On the impact of systematical uncertainties for the CP violation measurement in superbeam experiments

Huber¹,

Mezzetto²,

Schwetz³

2008

J. High Energy Phys.

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Superbeam experiments can, in principle, achieve impressive sensitivities for CP violation in neutrino oscillations for large θ 13 . We study how those sensitivities depend on assumptions about systematical uncertainties. We focus on the second phase of T2K, the so-called T2HK experiment, and we explicitly include a near detector in the analysis. Our main result is that even an idealised near detector cannot remove the dependence on systematical uncertainties completely. Thus additional information is required. We identify certain combinations of uncertainties, which are the key to improve the sensitivity to CP violation, for example the ratio of electron to muon neutrino cross sections and efficiencies. For uncertainties on this ratio larger than 2%, T2HK is systematics dominated. We briefly discuss how our results apply to a possible two far detector configuration, called T2KK. We do not find a significant advantage with respect to the reduction of systematical errors for the measurement of CP violation for this setup.

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Section: Jhep03(2008)021contrasting

confidence: 55%

On the impact of systematical uncertainties for the CP violation measurement in superbeam experiments

Huber¹,

Mezzetto²,

Schwetz³

2008

J. High Energy Phys.

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“…Pion electroproduction and older neutrino scattering experiments suggest values around m A ∼ 1 GeV [447,591] whereas more recent data from MiniBooNE and K2K favor higher central values up to m A ∼ 1.3 GeV [592,593]. The origin of this discrepancy is unclear and could be a consequence of nuclear medium effects [594] or a deviation from the dipole form [595].…”

Section: Nucleon Axial and Pseudoscalar Form Factorsmentioning

confidence: 50%

Baryons as relativistic three-quark bound states

Eichmann

Sanchis-Alepuz

Williams

et al. 2016

Progress in Particle and Nuclear Physics

436

530

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We review the spectrum and electromagnetic properties of baryons described as relativistic three-quark bound states within QCD. The composite nature of baryons results in a rich excitation spectrum, whilst leading to highly non-trivial structural properties explored by the coupling to external (electromagnetic and other) currents. Both present many unsolved problems despite decades of experimental and theoretical research. We discuss the progress in these fields from a theoretical perspective, focusing on nonperturbative QCD as encoded in the functional approach via Dyson-Schwinger and Bethe-Salpeter equations. We give a systematic overview as to how results are obtained in this framework and explain technical connections to lattice QCD. We also discuss the mutual relations to the quark model, which still serves as a reference to distinguish 'expected' from 'unexpected' physics. We confront recent results on the spectrum of non-strange and strange baryons, their form factors and the issues of two-photon processes and Compton scattering determined in the DysonSchwinger framework with those of lattice QCD and the available experimental data. The general aim is to identify the underlying physical mechanisms behind the plethora of observable phenomena in terms of the underlying quark and gluon degrees of freedom.

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“…(1.5) M A denotes the axial mass. Notice that recent studies [19,20] suggest M A value larger by about 20% with respect to the old measurements [21][22][23]. The impact of the electromagnetic form-factors on the axial mass extraction is small, but it can play a role in the future, when more precise measurements of the neutrino-nucleon cross-sections will be performed.…”

Section: Jhep09(2010)053mentioning

confidence: 99%

Neural network parameterizations of electromagnetic nucleon form-factors

Graczyk

Płoński

Sulej

2010

J. High Energ. Phys.

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Abstract:The electromagnetic nucleon form-factors data are studied with artificial feed forward neural networks. As a result the unbiased model-independent form-factor parametrizations are evaluated together with uncertainties. The Bayesian approach for the neural networks is adapted for χ 2 error-like function and applied to the data analysis. The sequence of the feed forward neural networks with one hidden layer of units is considered. The given neural network represents a particular form-factor parametrization. The so-called evidence (the measure of how much the data favor given statistical model) is computed with the Bayesian framework and it is used to determine the best form factor parametrization.

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Measurement of the quasielastic axial vector mass in neutrino interactions on oxygen

Cited by 175 publications

References 34 publications

On the impact of systematical uncertainties for the CP violation measurement in superbeam experiments

On the impact of systematical uncertainties for the CP violation measurement in superbeam experiments

Baryons as relativistic three-quark bound states

Neural network parameterizations of electromagnetic nucleon form-factors

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