학술논문
Tuning the genie pion production model with MINERvA data
Document Type
article
Author
Stowell, P; Pickering, L; Wilkinson, C; Wret, C; Akbar, F; Andrade, DA; Ascencio, MV; Bellantoni, L; Bercellie, A; Betancourt, M; Bodek, A; Bravar, A; Budd, H; Caceres, G; Cai, T; Carneiro, MF; Chaves, J; da Motta, H; Dytman, SA; Díaz, GA; Felix, J; Fields, L; Filkins, A; Fine, R; Fiza, N; Galindo, R; Gallagher, H; Ghosh, A; Gran, R; Harris, DA; Henry, S; Jena, S; Jena, D; Kleykamp, J; Kordosky, M; Last, D; Le, T; Lu, X-G; Maher, E; Manly, S; Mann, WA; Marshall, CM; McFarland, KS; Messerly, B; Miller, J; Morfín, JG; Mousseau, J; Naples, D; Nelson, JK; Nguyen, C; Norrick, A; Nuruzzaman; Paolone, V; Perdue, GN; Ramírez, MA; Ransome, RD; Ray, H; Rimal, D; Rodrigues, PA; Ruterbories, D; Schellman, H; Salinas, CJ Solano; Su, H; Sultana, M; Syrotenko, VS; Valencia, E; Wolcott, J; Wospakrik, M; Yaeggy, B; Zazueta, L; Zhang, D
Source
Physical Review D. 100(7)
Subject
Language
Abstract
Faced with unresolved tensions between neutrino interaction measurements atfew-GeV neutrino energies, current experiments are forced to accept largesystematic uncertainties to cover discrepancies between their data and modelpredictions. In this paper, the widely used pion production model in GENIE iscompared to four MINERvA charged current pion production measurements usingNUISANCE. Tunings, ie, adjustments of model parameters, to help match GENIE toMINERvA and older bubble chamber data are presented here. We find thatscattering off nuclear targets as measured in MINERvA is not in good agreementwith scattering off nucleon (hydrogen or deuterium) targets in the bubblechamber data. An additional ad hoc correction for the low-$Q^2$ region, wherecollective effects are expected to be large, is also presented. While thesetunings and corrections improve the agreement of GENIE with the data, themodeling is imperfect. The development of these tunings within the NUISANCEframeworkallows for straightforward extensions to other neutrino eventgenerators and models, and allows omitting and including new data sets as theybecome available.