Details

Autor(en) / Beteiligte

• 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.

Titel

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

Ist Teil von

• Physical review letters, 2016-09, Vol.117 (11)

Ort / Verlag

United States: American Physical Society (APS)

Erscheinungsjahr

2016

Link zum Volltext

Quelle

American Physical Society

Beschreibungen/Notizen

• 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.