Evidence for Neutral-Current Diffractive π0 Production from Hydrogen in Neutrino Interactions on Hydrocarbon

Wolcott, J.; Aliaga, L.; Altinok, O.; Bercellie, A.; Betancourt, M.; Bodek, A.; Bravar, A.; Budd, H.; Cai, T.; Carneiro, M. F.; Chvojka, J.; da Motta, H.; Devan, J.; Dytman, S. A.; Díaz, G. A.; Eberly, B.; Endress, E.; Felix, J.; Fields, L.; Fine, R.; Galindo, R.; Gallagher, H.; Golan, T.; Gran, R.; Harris, D. A.; Higuera, A.; Hurtado, K.; Kiveni, M.; Kleykamp, J.; Kordosky, M.; Le, T.; Maher, E.; Manly, S.; Mann, W. A.; Marshall, C. M.; Martinez Caicedo, D. A.; McFarland, K. S.; McGivern, C. L.; McGowan, A. M.; Messerly, B.; Miller, J.; Mislivec, A.; Morfín, J. G.; Mousseau, J.; Naples, D.; Nelson, J. K.; Norrick, A.; Nuruzzaman,; Osta, J.; Paolone, V.; Park, J.; Patrick, C. E.; Perdue, G. N.; Rakotondravohitra, L.; Ramirez, M. A.; Ray, H.; Ren, L.; Rimal, D.; Rodrigues, P. A.; Ruterbories, D.; Schellman, H.; Schmitz, D. W.; Solano Salinas, C. J.; Sánchez Falero, S.; Tagg, N.; Tice, B. G.; Valencia, E.; Walton, T.; Wospakrik, M.; Zhang, D.

doi:10.1103/PhysRevLett.117.111801

Title: Evidence for Neutral-Current Diffractive $π^{0}$ Production from Hydrogen in Neutrino Interactions on Hydrocarbon

Journal Article · Thu Sep 01 00:00:00 EDT 2016 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.117.111801· OSTI ID:1251202

Wolcott, J.; Aliaga, L.; Altinok, O.; Bercellie, A.; Betancourt, M.; Bodek, A.; Bravar, A.; Budd, H.; Cai, T.; Carneiro, M. F.; Chvojka, J.; da Motta, H.; Devan, J.; Dytman, S. A.; Díaz, G. A.; Eberly, B.; Endress, E.; Felix, J.; Fields, L.; Fine, R. more »

Here, the MINERvA experiment observes an excess of events containing electromagnetic showers relative to the expectation from Monte Carlo simulations in neutral-current neutrino interactions with mean beam energy of 4.5 GeV on a hydrocarbon target. The excess is characterized and found to be consistent with neutral-current π⁰ production with a broad energy distribution peaking at 7 GeV and a total cross section of 0.26 $$\pm$$ 0.02 (stat) $$\pm$$ 0.08 (sys) x $$10^{-39} cm^{2}$$. The angular distribution, electromagnetic shower energy, and spatial distribution of the energy depositions of the excess are consistent with expectations from neutrino neutral-current diffractive neutral pion production from hydrogen in the hydrocarbon target. These data comprise the first direct experimental observation and constraint for a reaction that poses an important background process in neutrino oscillation experiments searching for $$\nu_{\mu}$$to $$\nu_e$$ oscillations.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Organization:: MINERvA Collaboration

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1251202

Alternate ID(s):: OSTI ID: 1321039

Report Number(s):: FERMILAB-PUB-16-108-ND; arXiv:1604.01728; PRLTAO; 1444347

Journal Information:: Physical Review Letters, Vol. 117, Issue 11; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 18 works

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Neutrino–nucleus cross sections for oscillation experiments Katori, Teppei; Martini, Marco Journal of Physics G: Nuclear and Particle Physics, Vol. 45, Issue 1 https://doi.org/10.1088/1361-6471/aa8bf7	journal	December 2017
Constraint of the MINERvA Medium Energy Neutrino Flux using Neutrino-Electron Elastic Scattering Valencia, E.; Jena, D.; Akbar, F. arXiv https://doi.org/10.48550/arxiv.1906.00111	text	January 2019

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