Neutrino-nucleus reactions for neutrino oscillation experiments Theoretical description and Results Conclusions and Further Work SuSAv2-MEC analysis of recent T2K and MINERνA measurements, and 2p2h implementation in GENIE Guillermo D. Megias DPhP, CEA-Irfu, University of Paris-Saclay Department of Atomic, Molecular and Nuclear Physics, University of Seville NuInt 18, GSSI, October 18, 2018 1 G. D. Megias: [email protected] SuSAv2-MEC analysis of T2K and MINERνA data Neutrino-nucleus reactions for neutrino oscillation experiments Theoretical description and Results Conclusions and Further Work 12 T2K CC0πNp data on C with 0p above 500 MeV/c (PRELIMINARY) θ θ 0.980 < cos µ < 1.000 0.940 < cos µ < 0.980 0.1 0.4 2p-2h GENIE π 0.08 abs 0.3 π 1p1h+2p2h+ abs RMF 0.06 2p2h and π errors /GeV/nucleon) abs 2 0.2 0.04 cm -39 (10 0.1 0.02 µ /dp σ 0 d 0 0 1 2 3 4 5 6 7 8 0 0.5 1 1.5 2 2.5 3 pµ (GeV) pµ (GeV) θ θ 0.700 < cos µ < 0.800 0.300 < cos µ < 0.600 T2K 1.4 0.8 1.2 1 0.6 /GeV/nucleon) /GeV/nucleon) 0.8 2 2 cm 0.4 cm 0.6 -39 -39 0.4 (10 (10 0.2µ µ 0.2 /dp /dp σ σ d 0 d 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 pµ (GeV) pµ (GeV) 2 G. D. Megias: [email protected] SuSAv2-MEC analysis of T2K and MINERνA data Neutrino-nucleus reactions for neutrino oscillation experiments Theoretical description and Results Conclusions and Further Work MINERνAν ¯µ-CH reactions at Eν ∼ 3 GeV arXiv:1807.10532 [nucl-th] 1.50 < p < 2.00 4.00 < p < 5.00 20 || 8 || QE-like data θ o 15 2p-2h MEC ( µ<20 ) 6 o || θ || QE (CH, µ<20 ) dp dp T T 10 Total 4 /dp CCQE data /dp σ σ 2 2 d d 5 2 0 0 0 0.5 1 1.5 0 0.5 1 1.5 pT (GeV/c) pT (GeV/c) 10.00 < p < 15.00 0.4 || 70 60 p = pµ cos θµ || 0.3 50 pT = pµ sin θµ || dp /GeV/nucleon) T 40 0.2 2 /dp cm σ 30 2 -40 d 20 0.1 (10 T 10 /dp σ 0 d 0 0 0.5 1 1.5 0 0.2 0.4 0.6 0.8 1 1.2 1.4 pT (GeV/c) pT (GeV/c) 3 G. D. Megias: [email protected] SuSAv2-MEC analysis of T2K and MINERνA data Neutrino-nucleus reactions for neutrino oscillation experiments Theoretical description and Results Conclusions and Further Work 2 GENIE and SuSAv2-MEC vs. MINERνAν ¯µ-CH data (χ analysis) χ2/d.o.f . = 1.79 (SuSAv2-MEC) ; χ2/d.o.f . = 1.58 (GENIE) 1.50 < p < 2.00 3.00 < p < 3.50 10.00 < p < 15.00 20 || 25 || 0.4 || /nucleon) 0.35 2 20 15 SuSAv2-MEC 0.3 GENIE CCQE data 15 0.25 /(GeV/c) 2 10 0.2 cm 10 -40 0.15 (10 5 0.1 || 5 dp 0.05 T /dp 0 0 0 σ 0 0.5 1 1.5 0 0.5 1 1.5 0 0.5 1 1.5 2 d pT (GeV/c) pT (GeV/c) 1.50 < p < 2.00 3.00 < p < 3.50 10.00 < p < 15.00 2.5 || || || 1.3 1.6 2.25 SuSAv2-MEC 1.5 GENIE 1.2 2 CCQE data 1.4 1.75 1.1 1.3 1.5 1 1.2 1.1 1.25 0.9 1 Ratio to GENIE 0.8 1 0.9 0.75 0.7 0.8 0.5 0.6 0.7 0 0.25 0.5 0.75 1 0 0.5 1 1.5 0 0.5 1 1.5 pT (GeV/c) pT (GeV/c) 4 G. D. Megias: [email protected] SuSAv2-MEC analysis of T2K and MINERνA data Neutrino-nucleus reactions for neutrino oscillation experiments Theoretical description and Results Conclusions and Further Work 1 Is the SuSAv2-MEC a good model to analyze 1p1h and 2p2h channels in CC inclusive neutrino interactions? 5 G. D. Megias: [email protected] SuSAv2-MEC analysis of T2K and MINERνA data Neutrino-nucleus reactions for neutrino oscillation experiments Theoretical description and Results Conclusions and Further Work 1 Is the SuSAv2-MEC a good model to analyze 1p1h and 2p2h channels in CC inclusive neutrino interactions? 2 Can we extend SuSAv2-MEC to semi-inclusive reactions? 5 G. D. Megias: [email protected] SuSAv2-MEC analysis of T2K and MINERνA data Neutrino-nucleus reactions for neutrino oscillation experiments Theoretical description and Results Conclusions and Further Work 1 Is the SuSAv2-MEC a good model to analyze 1p1h and 2p2h channels in CC inclusive neutrino interactions? 2 Can we extend SuSAv2-MEC to semi-inclusive reactions? 3 Can this model reproduce also inclusive (e, e′) data and semi-inclusive (e, e′p) processes? 5 G. D. Megias: [email protected] SuSAv2-MEC analysis of T2K and MINERνA data Neutrino-nucleus reactions for neutrino oscillation experiments Theoretical description and Results Conclusions and Further Work 1 Is the SuSAv2-MEC a good model to analyze 1p1h and 2p2h channels in CC inclusive neutrino interactions? 2 Can we extend SuSAv2-MEC to semi-inclusive reactions? 3 Can this model reproduce also inclusive (e, e′) data and semi-inclusive (e, e′p) processes? 4 Is it possible to introduce sophisticated microscopic models in generators in a fully consistent way? 5 G. D. Megias: [email protected] SuSAv2-MEC analysis of T2K and MINERνA data Neutrino-nucleus reactions for neutrino oscillation experiments Theoretical description and Results Conclusions and Further Work 1 Is the SuSAv2-MEC a good model to analyze 1p1h and 2p2h channels in CC inclusive neutrino interactions? 2 Can we extend SuSAv2-MEC to semi-inclusive reactions? 3 Can this model reproduce also inclusive (e, e′) data and semi-inclusive (e, e′p) processes? 4 Is it possible to introduce sophisticated microscopic models in generators in a fully consistent way? 5 What is the physics behind SuSAv2-MEC? 5 G. D. Megias: [email protected] SuSAv2-MEC analysis of T2K and MINERνA data Neutrino-nucleus reactions for neutrino oscillation experiments Theoretical description and Results Connection between ν-A and e-A reactions Conclusions and Further Work Contents 1 Neutrino-nucleus reactions for neutrino oscillation experiments Connection between ν-A and e-A reactions 2 Theoretical description and Results Theoretical models and Description of 2p2h channels Inclusive (e, e′) data within the SuSAv2-MEC model Comparison with CC νµ-nucleus experimental data 3 Conclusions and Further Work Conclusions and Further Work 6 G. D. Megias: [email protected] SuSAv2-MEC analysis of T2K and MINERνA data Neutrino-nucleus reactions for neutrino oscillation experiments Theoretical description and Results Connection between ν-A and e-A reactions Conclusions and Further Work Connection between ν-A and e-A reactions l = e, µ, τ Experimental conditions are different: ′ ➠ (e, e ): Ee is well determined and different channels can be clearly identified by knowing the energy and momentum transfer ➠ CC(νl , l): Eν is broadly distributed in the neutrino beam and different channels and nuclear effects can contribute to the same kinematics of the outgoing lepton From a theoretical framework, neutrino- and electron-nucleus scattering are obviously con- nected (CVC) to each other and a reliable model must be able to describe both processes. Neutrinos can probe both the vector and axial nuclear responses, unlike electrons which are only sensitive to the vector response. =⇒ Although not sufficient to fully constrain neutrino cross sections, electron scattering consti- tutes a necessary test and a solid benchmark for nuclear models. 7 G. D. Megias: [email protected] SuSAv2-MEC analysis of T2K and MINERνA data Neutrino-nucleus reactions for neutrino oscillation experiments Theoretical description and Results Connection between ν-A and e-A reactions Conclusions and Further Work Theoretical description: ν-nucleus cross section Double differential cross section χ = +(−) ≡ νµ(¯νµ) 2 ~ 2 G2 cos θ 2 dσ |kl | GF µν 2 F c θ˜ = ηµν W = σ F ; σ0 = kµ cos 2 0 χ 2 dkµdΩµ |~k | 4π 2π 2 χ νl e e Nuclear structure information 2 Fχ = VLRL + VT RT + χ [2VT ′ RT ′ ] VLRL = VCC RCC + 2VCLRCL + VLLRLL VV AA VV AA ′ VA RL = RL + RL ; RT = RT + RT ; RT = RT ′ Nuclear responses RK can be calculated in terms of the single nucleon ones GK and the nuclear dependence of the model ⇒ RK ≈ F (nuclear) · GK Comparison with (e, e′) reactions 2 2 dσ VV VV α cos θ/2 = σMott vLRL + vT RT ; σMott = 4 dkµdΩ 4Ei sin θ/2 8 G. D. Megias: [email protected] SuSAv2-MEC analysis of T2K and MINERνA data Neutrino-nucleus reactions for neutrino oscillation experiments Theoretical models and Description of 2p2h channels ′ Theoretical description and Results Inclusive (e, e ) data within the SuSAv2-MEC model Conclusions and Further Work Comparison with CC νµ-nucleus experimental data Contents 1 Neutrino-nucleus reactions for neutrino oscillation experiments Connection between ν-A and e-A reactions 2 Theoretical description and Results Theoretical models and Description of 2p2h channels Inclusive (e, e′) data within the SuSAv2-MEC model Comparison with CC νµ-nucleus experimental data 3 Conclusions and Further Work Conclusions and Further Work 9 G.