Description
This Poster presents two related measurements. Firstly, the inclusive, charged-current double-differential cross section for, $\nu_{\mu}$ scattering on the predominantly hydrocarbon medium of the Nova, near detector is obtained, expressed in terms of three-momentum transfer and available hadronic energy: $d^{2}\sigma/d|\vec{q}|dE_{avail}$. The cross section is compared to GENIE-based Monte Carlo predictions that utilize four different models of the 2-particle-2-hole (2p2h) contribution. Secondly, the composition of the selected event sample across the $|\vec{q}|$ versus $E_{avail}$ phase space is characterized using GENIE-based event distributions (templates) that represent scattering processes on single bound nucleons (1p1h), namely baryon-resonance production (RES), inelastic scattering (DIS), quasi-elastic scattering (QE), and Other ($\overline{\nu}_{\mu}$, NC, coherent scattering). The normalizations of the RES and DIS templates are adjusted by fitting to a control sample comprised of RES and DIS and devoid of QE, Other, and 2p2h reactions. A bin-by-bin subtraction of the templates from the selected event sample yields an estimate for the distribution of 2p2h events over the plane of $|\vec{q}|$ versus $E_{avail}$. The distribution is then converted into a differential cross section for 2p2h reactions. Significant 2p2h rate is observed in the contiguous region 0.3 $\leq$\,\qthree\,$\leq$\, 1.0 GeV/c with 0.0 $\leq$\,\eavail\,$\leq$ 0.35 GeV.
| Collaboration | NOvA |
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