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Fun Timely Intellectual Adorable!Spin eptonic CPviolationWeakinteractionnucleartargetNuSTEC NewsNucleoncorrelationEMC effectelectronscatteringDarkmatterSubscribe “NuSTEC News”E-mail to listserv@fnal.gov, Leave the subject line blank, Type "subscribe nustec-news firstname lastname"(or just send e-mail to me, katori@FNAL.GOV)like “@nuxsec” on Facebook page, use hashtag #nuxsecTeppei Katori, Queen Mary University of London2017/12/201
ReferencesQuarks and Leptons (Halzen and Martin)- classic- show many calculations- solutions for all exercisesWeak interactions of Leptons and Quarks (Commins and Bucksbaum)- classic- show more details of weak interaction calculations- too many typosPhysics of Neutrinos (Fukugita and Yanagida)- modern- very intense- from solar neutrinos to SUSYNeutrino astrophysics (Bahcall)- more likely a novel, honorable mentioningTeppei Katori, Queen Mary University of London2017/12/202
ReferencesFoundation of Nuclear and Particle Physics (2017)- Authors: Donnelly, Formaggio, Holstein, Milner, Surrow- one and only one textbook on this subject- buy if your PhD thesis topic is about neutrino cross section“From eV to EeV: Neutrino cross sections across energy scales”- Authors: Formaggio and Zeller (MicroBooNE spokesperson)- Rev.Mod.Phys.84(2012)1307, arXiv:1305.7513- very good summary of neutrino cross sections“Neutrino-Nucleus Cross Sections for Oscillation Experiments”- Authors: Katori (me) and Martini (Martini model)- my paper, a review both theoretical and experimental views- cite and give me citation number!“NuSTEC News”- http://nustec.fnal.gov/- subscribe mailing list, “like” facebook page, use#nuxsecTeppei Katori, Queen Mary University of London2017/12/203
Jon Link, Fermilab Wine & Cheese seminar (2005)Dark age of neutrino interaction physics(1) Measure interaction rate(2) Divide by known cross section to obtain flux(3) use this flux, measure cross-section frommeasured rateWhat you get? OF COURSE the cross sectionyou assume!Teppei Katori, Queen Mary University ofLondon2017/12/204
Ankowski,Benhar,Farina,PRD82(2010)013002Impulse Approximation isbroken at low Q2 (or low q )1/q dNnNdrNNSRC rnucln 1fmnpp 1.7fmppnnrnucl 2.4x1014g/cm3Teppei Katori, Queen Mary University of London2017/12/205
Wiringa et al.,PRC89(2014)024305Nuclear decompositionTeppei Katori, Queen Mary University of London2017/12/206
Alvarez-Ruso, NuSTEC15 lectureForm factorFourier transformationcharge distribution ßà form factore Pb à e PbTeppei Katori, Queen Mary University of London2017/12/207
1. Neutrino cross-section formulaCross-section- product of Leptonic and Hadronic tensords LµnWµnLeptonic tensorà the Standard Model (easy)Hadronic tensorà nuclear physics (hard)LµnµnnpWµnTeppei Katori, Queen Mary University of London2017/12/208
1. Neutrino cross-section formulaCross-section- product of Leptonic and Hadronic tensords LµnWµnLeptonic tensorà the Standard Model (easy)Hadronic tensorà nuclear physics (hard)LµnµnnAll complication of neutrino cross-section ishow to model the hadronic tensor partTeppei Katori, Queen Mary University of LondonpWµn2017/12/209
2. MiniBooNE phase spaceExperiment measure the interaction rate R,R - F : neutrino flux- s : cross section- e : efficiencyn-beamXTµµcosq Φ σ εWhen do you see data-MC disagreement, how to interpret the result?Teppei Katori, Queen Mary University of London2017/12/2010
MiniBooNE collaboration,PRL.100(2008)0323012. MiniBooNE phase spaceXn-beamTµµcosqCCQE kinematic space (Tµ-cosqµ plane) in MiniBooNESince observables are muon energy (Tµ) and angle (cosqµ), these 2 variablescompletely specify the kinematic space.dσ 2dσ 2 dEdΩ dEd(cos ϑ)Data-MC ratio for Tµ-cosqµ plane(arbitrary normalization).MiniBooNE MC doesn’t describedata very well.We would like to improve oursimulation, but how?Teppei Katori, Queen Mary University of London2017/12/2011
MiniBooNE collaboration,PRL.100(2008)0323012. MiniBooNE phase spacen-beamXTµµcosqWithout knowing flux, you cannot modify cross section modelR Φ σTeppei Katori, Queen Mary University of Londondσ 2dσ 2 dEdΩ dEd(cos ϑ)2017/12/2012
MiniBooNE collaboration,PRL.100(2008)0323012. MiniBooNE phase spaceXn-beamTµµcosqWithout knowing flux, you cannot modify cross section modelR(Eν ,Q2 ) 2Φ(E) σ(Q) νdσ 2dσ 2 dEdΩ dEd(cos ϑ)The data-MC disagreementfollows equal Q2- lines, notequal En-lines.à Something wrong in crosssection model, not fluxmodel.Teppei Katori, Queen Mary University of London2017/12/2013
MiniBooNE collaboration,PRL.100(2008)0323012. MiniBooNE phase spacen-beamXTµµcosqWithout knowing flux, you cannot modify cross section modelR(Eν ,Q2 ) 2Φ(E) σ(Q) νAfter tuning cross section parameters, data and MC agree.Teppei Katori, Queen Mary University of Londondσ 2dσ 2 dEdΩ dEd(cos ϑ)2017/12/2014
Smith and Moniz, Nucl.,Phys.,B43(1972)6052. Smith-Moniz formalismNucleus is described by the collection of incoherent Fermi gas particles.Ehi!!f (k,q,w)TµνdE : hadronic tensor(Wµν )ab Elo!!f(k,q,w) : nucleon phase space distributionTµn Tµn (F1, F2, FA, FP) : nucleon form factorsFA(Q2) gA/(1 Q2/MA2)2 : Axial vector form factorEhi : the highest energy state of nucleonElo : the lowest energy state of nucleonAlthough Smith-Moniz formalism offers variety ofchoice, one can solve this equation analytically ifthe nucleon space is simple.Teppei Katori, Queen Mary University of London2017/12/2015
Smith and Moniz, Nucl.,Phys.,B43(1972)6052. Relativistic Fermi Gas (RFG) modelNucleus is described by the collection of incoherent Fermi gas particles.Ehi!!f (k,q,w)TµνdE : hadronic tensor(Wµν )ab Elo!!f(k,q,w) : nucleon phase space distributionTµn Tµn (F1, F2, FA, FP) : nucleon form factorsFA(Q2) gA/(1 Q2/MA2)2 : Axial vector form factor22(p M)Ehi : the highest energy state of nucleon FElo : the lowest energy state of nucleon κ((pF2 M2 ) ω EBTeppei Katori, Queen Mary University of London)2017/12/2016
Smith and Moniz, Nucl.,Phys.,B43(1972)6052. Relativistic Fermi Gas (RFG) modelNucleus is described by the collection of incoherent Fermi gas particles.Ehi!!f (k,q,w)TµνdE : hadronic tensor(Wµν )ab Elo!!f(k,q,w) : nucleon phase space distributionTµn Tµn (F1, F2, FA, FP) : nucleon form factorsFA(Q2) gA/(1 Q2/MA2)2 : Axial vector form factor22(p M)Ehi : the highest energy state of nucleon FElo : the lowest energy state of nucleon κ((pF2 M2 ) ω EB)MiniBooNE tuned following 2 parameters using Q2 distribution by least c2 fit;MA effective axial massk effective Pauli blocking parameterMiniBooNE tuned their axial mass to 1.3 GeV!but axial massisofnot1.3 GeV!2017/12/20Teppei Katori, Queen Mary UniversityLondon17
MiniBooNE,PRD81(2010)0920052. Charged Current Quasi-Elastic scattering (CCQE)CCQE interaction on nuclear targets are precisely measured by electron scattering- Lepton universality à precise prediction for neutrino CCQE cross-sectionSimulation disagree with many modern accelerator based neutrino experiment data,neither shape (low Q2 and high Q2) nor normalization. By tuning axial mass (MA) 1.21.3 GeV, simulations successfully reproduce data both shape and normalization.Problem: we know MA 1 GeV from electron scattering experiments (CCQE puzzle).MiniBooNE vs. NOMAD nµCCQE cross section on 12C target (per nucleon)En (GeV)Teppei Katori, Queen Mary University of London2017/12/2018
Martini et al,PRC80(2009)0655012. The solution of CCQE puzzlePresence of 2-body current- Martini et al showed 2p-2h effect can add up 30-40% more cross section!What experimentalistscall “CCQE” is notgenuine CCQE!MarcoMartini(Saclay)Teppei Katori, Queen Mary University of London2017/12/2019
Martini et al,PRC80(2009)065501Nieves et al,PLB707(2012)72; NPA627(1997)5432. The solution of CCQE puzzlePresence of 2-body current- Martini et al showed 2p-2h effect can add up 30-40% more cross section!- consistent result is obtained by Nieves et alWhat experimentalistscall “CCQE” is notgenuine CCQE!MarcoMartini(Saclay)The model is tuned withelectron scattering data(no free parameter)JuanNieves(Valencia)Valencia model vs. MiniBooNE CCQEdouble differentialcross-section data 20Teppei Katori, Queen Mary University of London2017/12/20
INT2013 workshopQE 2p-2h RPA kills three birds with one stone- 1st bird high Q2 problem- 2nd bird normalization- 3rd bird low Q2 problemTeppei Katori, Queen Mary University of London2017/12/2021
Martini et al,PRC80(2009)065501, PRC90(2014)025501Nieves et al,PLB707(2012)722. The solution of CCQE puzzlePresence of 2-body current- Martini et al showed 2p-2h effect can add up 30-40% more cross section!- consistent result is obtained by Nieves et alThe model is tuned with- The model can explain T2K data simultaneouslyelectron scattering data(no free parameter)Martini model vs. T2K CC double differential cross-section dataJuanNieves(Valencia)Valencia model vs. MiniBooNE CCQEdouble differentialcross-section data 22Teppei Katori, Queen Mary University of London2017/12/20
Martini et al,PRC80(2009)065501, PRC90(2014)025501Nieves et al,PLB707(2012)722. The solution of CCQE puzzlePresence of 2-body current- Martini et al showed 2p-2h effect can add up 30-40% more cross section!- consistent result is obtained by Nieves et alThe model is tuned with- The model can explain T2K data simultaneouslyelectron scattering data(no free parameter)Martini model vs. T2K CC double differential cross-section dataJuanNieves(Valencia)enhancement by 2p-2h effect(short/medium range correlation)suppression by RPA(long range correlation)Valencia model vs. MiniBooNE CCQEdouble differentialcross-section data 23Teppei Katori, Queen Mary University of London2017/12/20
Wiringa et al, PRC51(1997)38, Pieper et al, PRC64(2001)014001Lovato et al,PRL112(2014)182502, arXiv:1501.01981Ab initio calculationreproduce same feature2. The solution of CCQE puzzleAb initio calculation- Green’s function Monte Carlo (GFMC)- Predicts energy levels of all light nuclei- Consistent result with phenomenological models- neutron-proton short range correlation (SRC)light nuclear state energiesAlessandro Lovato(Argonne)2N potential(Av18)3N potential(IL7)Neutrino NCQE scattering in 12C response functionTeppei Katori, Queen Mary University of London2017/12/2024
Frankfurt et al,IJMPA23(2008)2991, JLab HallA, Science320(2008)1476Sobczyk, Neutrino2014, Piasetzky et al, PRL106(2011)0523012. The solution of CCQE puzzleAb initio calculation- Green’s function Monte Carlo (GFMC)- Predicts energy levels of all light nuclei- Consistent result with phenomenological models- neutron-proton short range correlation (SRC)Ab initio calculationreproduce same featureAlessandro Lovato(Argonne)2N potential(Av18)3N potential(IL7)Physics of SRC- neutrino interaction- 0nbb- astrophysics- EMC effect- etcrNNSRC rnucln 1fmnpp 1.7fmppnnrnucl 2.4x10g/cmTeppeiKatori, QueenMary Universityof LondonNucleoncorrelation 2017/12/20is a very14325hot topics!
CLAS, PRL96(2006)082501, Piasetzky et al, PRL97(2006)162504JLab HallA, PRL99(2007)072501, Science320(2008)14762. Nucleon correlationsShort Range Correlation (SRC) 20% of all nucleons in heavy elements (A 4) 90% are neutron-proton (n-p) pair nucleon pair have back-to-back momentum momentum can be beyond Fermi searNNSRC rnucln 1.7fmp 1fmnppnppnnrnucl 2.4x1014g/cm3NNSRC quasi deuteronTeppei Katori, Queen Mary University of London2017/12/2026
CLAS, PRL96(2006)082501, Piasetzky et al, PRL97(2006)162504JLab HallA, PRL99(2007)072501, Science320(2008)14762. Nucleon correlationsShort Range Correlation (SRC) 20% of all nucleons in heavy elements (A 4) 90% are neutron-proton (n-p) pair nucleon pair have back-to-back momentum momentum can be beyond Fermi seaTeppei Katori, Queen Mary University of London2017/12/2027
Benhar et al, Rev.Mod. Phys.80(2008)189, PRL105(2010)1323012. Electron scattering vs. Neutrino scatteringElectron scattering- well defined energy, well known fluxà reconstruct energy-momentum transferà kinematics is completely fixedNeutrino scattering- Wideband beamà observables are mTeppei Katori, Queen Mary University of Londontarget(fully active)2017/12/2028
Benhar et al, Rev.Mod. Phys.80(2008)189, PRL105(2010)1323012. Electron scattering vs. Neutrino scatteringElectron scattering- well defined energy, well known fluxà reconstruct energy-momentum transferà kinematics is completely fixedNeutrino scattering- Wideband beamà observables are inclusivespectrometerelectronbeamtargetQE for neutrino physicists(QE-like topology)neutrinobeamtarget(fully active)OmarBenhar(Rome I)description of neutrino data will require anew paradigm, suitable for application toprocesses in which the lepton kinematicsTeppei Katori, Queen Mary University ofisLondon2017/12/20not fully determinedQE for nuclear physicists (genuine QE)29
Wilkinson et al.,PRD93(2016)0720102. Summary of CCQE for oscillation physicsCommunity is converged: the origin of CCQE puzzle is multi-nucleon correlation- Valencia MEC model is available in NEUT- being implemented in GENIE, officially ready for GENIE v2.12This moment Valencia MEC model does not fit T2K (and Super-K) data very well, people areworking very hard to understand what is going onlarge MA error à large 2p2h errorIt is crucial to have correct CCQE, MEC, pion production models to understandMiniBooNE, MINERvA, T2K data simultaneously. Otherwise MA error staysaround 20-30%.We have good theorists who make models, and good experimentalists whomeasure data, but we are still lacking people between them.Teppei Katori, Queen Mary University of London2017/12/2030
Alvarez-Ruso et al,NewJ.Phys.16(2014)075015, Morfin et al, AHEP(2012)934597Garvey et al.,Phys.Rept.580 (2015) 13. Open question of neutrino interaction physicsThe new data raised doubts in the areas wellunderstood. The list of new puzzles is quite long andseems to be expanding CCQE puzzle- Low Q2 suppression, high Q2 enhancement, high normalizationANL-BNL puzzle- Normalization difference between ANL and BNL bubble chamber pion dataJanSobczyk(Wroclaw)Coherent pion puzzle- Is there charged current coherent pion production?Pion puzzle- MiniBooNE and MINERvA pion kinematic data are incompatible under any modelsBaryon resonance, pion production by neutrinosTeppei Katori, Queen Mary University of London2017/12/2031
3. non-QE backgroundnon-QE background à shift spectrumµSignalnnTypical neutrino detector- Big and dense, to maximize interaction rate- Coarsely instrumented, to minimize cost(not great detector to measure hadrons)Teppei Katori, Queen Mary University of London2017/12/2032
3. non-QE backgroundnon-QE background à shift spectrumµSignalnnRejected(not background)nµnpTypical neutrino detector- Big and dense, to maximize interaction rate- Coarsely instrumented, to minimize cost(not great detector to measure hadrons)Teppei Katori, Queen Mary University of London2017/12/2033
3. non-QE backgroundnon-QE background à shift spectrumµSignalnnRejected(not background)nµNot rejected(background)nnpµnppion absorptionin nucleiTypical neutrino detector- Big and dense, to maximize interaction rate- Coarsely instrumented, to minimize cost(not great detector to measure hadrons)Teppei Katori, Queen Mary University of London2017/12/2034
3. non-QE backgroundnon-QE background à shift spectrumµSignalnnRejected(not background)nµNot rejected(background)nnpT2K collabo.µnppion absorptionin nucleiT2K collabo.QE assumptionreconstructed neutrinoenergy (EnQE)sin22q23Dm2µtReconstructed neutrino energy (GeV)Teppei Katori, Queen Mary University of London2017/12/2035
Coloma et al,PRL111(2013)221802Mosel et al,PRL112(2014)1518023. non-QE backgroundUnderstanding of neutrino pion productionis important for oscillation experimentsPion production for nµdisappearance search- Source of mis-reconstruction ofneutrino energypion absorptionnDUNE true vs. reconstructed En spectrumdCP p/2µpZ DNNdCP -p/2Neutral pion production in neappearance search- Source of misID of electronNCpo asymmetric decaynnZ DNpogNTeppei Katori, Queen Mary University of London2017/12/2036
Alvarez-Ruso et al,NewJ.Phys.16(2014)075015, Morfin et al, AHEP(2012)934597Garvey et al.,Phys.Rept.580 (2015) 13. Open question of neutrino interaction physicsThe new data raised doubts in the areas wellunderstood. The list of new puzzles is quite long andseems to be expanding CCQE puzzle- Low Q2 suppression, high Q2 enhancement, high normalizationANL-BNL puzzle- Normalization difference between ANL and BNL bubble chamber pion dataJanSobczyk(Wroclaw)Coherent pion puzzle- Is there charged current coherent pion production?Pion puzzle- MiniBooNE and MINERvA pion kinematic data are incompatible under any modelsTeppei Katori, Queen Mary University of London2017/12/2037
Alvarez-Ruso et al,NewJ.Phys.16(2014)075015, Morfin et al, AHEP(2012)934597Garvey et al.,Phys.Rept.580 (2015) 13. Open question of neutrino interaction physicsThe new data raised doubts in the areas wellunderstood. The list of new puzzles is quite long andseems to be expanding CCQE puzzle- Low Q2 suppression, high Q2 enhancement, high normalizationJanà presence of short and long range nucleon correlationsSobczyk(Wroclaw)ANL-BNL puzzle- Normalization difference between ANL and BNL bubble chamber pion dataCoherent pion puzzle- Is there charged current coherent pion production?Pion puzzle- MiniBooNE and MINERvA pion kinematic data are incompatibleTeppei Katori, Queen Mary University of London2017/12/2038
Alvarez-Ruso et al,NewJ.Phys.16(2014)075015, Morfin et al, AHEP(2012)934597Garvey et al.,Phys.Rept.580 (2015) 13. Open question of neutrino interaction physicsThe new data raised doubts in the areas wellunderstood. The list of new puzzles is quite long andseems to be expanding CCQE puzzle- Low Q2 suppression, high Q2 enhancement, high normalizationJanà presence of short and long range nucleon correlationsSobczyk(Wroclaw)ANL-BNL puzzle- Normalization difference between ANL and BNL bubble chamber pion dataCoherent pion puzzle- Is there charged current coherent pion production?Pion puzzle- MiniBooNE and MINERvA pion kinematic data are incompatible under any modelsTeppei Katori, Queen Mary University of London2017/12/2039
Hernandez et al,PRD87(2013)113009Alvarez-Ruso et al,PRC89(2014)0155033. ANL-BNL puzzleDeuteron target bubble chamber data are used to tune resonance models fornuclear target. However, 2 data set from Argonne (ANL) and Brookhaven (BNL)disagree their normalization 25%.à this propagates to every interactions with baryon resonanceANL vs. BNLe.g.) NCg production modelradiative D-decaynZ DNNTeppei Katori, Queen Mary University of Londonng2017/12/2040
Wilkinson et al,PRD90(2014)112017,Graczyk et al,PRD80(2009)093001Wu et al,PRC91(2015)0352033. ANL-BNL puzzleDeuteron target bubble chamber data are used to tune resonance models fornuclear target. However, 2 data set from Argonne (ANL) and Brookhaven (BNL)disagree their normalization 25%.à this propagates to every interactions with baryon resonanceReanalysis by Sheffield-Rochester group found a normalization problem on BNLANL vs. BNLRemained task, was nuclear effect correctly takeninto account to extract these data? (Wu. et al)Teppei Katori, Queen Mary University of London2017/12/2041
Alvarez-Ruso et al,NewJ.Phys.16(2014)075015, Morfin et al, AHEP(2012)934597Garvey et al.,Phys.Rept.580 (2015) 13. Open question of neutrino interaction physicsThe new data raised doubts in the areas wellunderstood. The list of new puzzles is quite long andseems to be expanding CCQE puzzle- Low Q2 suppression, high Q2 enhancement, high normalizationJanà presence of short and long range nucleon correlationsSobczyk(Wroclaw)ANL-BNL puzzle- Normalization difference between ANL and BNL bubble chamber pion dataà After correcting BNL normalization, ANL and BNL data agreeCoherent pion puzzle- Is there charged current coherent pion production?Pion puzzle- MiniBooNE and MINERvA pion kinematic data are incompatible under any modelsTeppei Katori, Queen Mary University of London2017/12/2042
Alvarez-Ruso et al,NewJ.Phys.16(2014)075015, Morfin et al, AHEP(2012)934597Garvey et al.,Phys.Rept.580 (2015) 13. Open question of neutrino interaction physicsThe new data raised doubts in the areas wellunderstood. The list of new puzzles is quite long andseems to be expanding CCQE puzzle- Low Q2 suppression, high Q2 enhancement, high normalizationJanà presence of short and long range nucleon correlationsSobczyk(Wroclaw)ANL-BNL puzzle- Normalization difference between ANL and BNL bubble chamber pion dataà After correcting BNL normalization, ANL and BNL data agreeCoherent pion puzzle- Is there charged current coherent pion production?Pion puzzle- MiniBooNE and MINERvA pion kinematic data are incompatible under any modelsTeppei Katori, Queen Mary University of London2017/12/2043
K2K,PRL95(2005)252301, SciBooNE, PRD78(2008)1120043. Coherent pion puzzleK2K and SciBooNE data show CC coherentpion production is consistent with zero.coherent p productionnµZApAK2K muon neutrino CC coherentpion candidate event distributionTeppei Katori, Queen Mary University of London2017/12/2044
K2K,PRL95(2005)252301, SciBooNE, PRD78(2008)112004Suzuki, NuFact2014, ArgoNeuT, PRL114(2015)039901, MINERvA, PRL113(2014)261802, T2K, PRL117(2016)1925013. Coherent pion puzzleK2K and SciBooNE data show CC coherentpion production is consistent with zero.MINERvA muon neutrino CC coherent pionproduction differential cross-sectionArgoNeuT, T2K, and MINERvA discoverednonzero CC coherent pion production, butdetails of kinematics are not understood.K2K muon neutrino CC coherentpion candidate event distributionT2K (on-axis): Suzuki, NuFact2014MINERvA: PRL113(2014)261802ArgoNeuT: PRL114(2015)039901T2K (off-axis): PRL117(2016)192501Teppei Katori, Queen Mary University of London2017/12/2045
Alvarez-Ruso et al,NewJ.Phys.16(2014)075015, Morfin et al, AHEP(2012)934597Garvey et al.,Phys.Rept.580 (2015) 13. Open question of neutrino interaction physicsThe new data raised doubts in the areas wellunderstood. The list of new puzzles is quite long andseems to be expanding CCQE puzzle- Low Q2 suppression, high Q2 enhancement, high normalizationJanà presence of short and long range nucleon correlationsSobczyk(Wroclaw)ANL-BNL puzzle- Normalization difference between ANL and BNL bubble chamber pion dataà After correcting BNL normalization, ANL and BNL data agreeCoherent pion puzzle- Is there charged current coherent pion production?à yes it is, but details of kinematic need to be studied morePion puzzle- MiniBooNE and MINERvA pion kinematic data are incompatible under any modelsTeppei Katori, Queen Mary University of London2017/12/2046
Alvarez-Ruso et al,NewJ.Phys.16(2014)075015, Morfin et al, AHEP(2012)934597Garvey et al.,Phys.Rept.580 (2015) 13. Open question of neutrino interaction physicsThe new data raised doubts in the areas wellunderstood. The list of new puzzles is quite long andseems to be expanding CCQE puzzle- Low Q2 suppression, high Q2 enhancement, high normalizationJanà presence of short and long range nucleon correlationsSobczyk(Wroclaw)ANL-BNL puzzle- Normalization difference between ANL and BNL bubble chamber pion dataà After correcting BNL normalization, ANL and BNL data agreeCoherent pion puzzle- Is there charged current coherent pion production?à yes it is, but details of kinematic need to be studied morePion puzzle- MiniBooNE and MINERvA pion kinematic data are incompatible under any modelsTeppei Katori, Queen Mary University of London2017/12/2047
3. Pion puzzleData from MiniBooNE and MINERvA and simulation are all incompatibleFlux-integrated differential crosssection are not comparable(unless 2 experiments use sameneutrino beam)Two data set are related by amodel ( GENIE neutrinointeraction generator).MINERvA data describe theshape well, but MiniBooNE datahave better normalizationagreement Teppei Katori, Queen Mary University of London2017/12/2048
, Sobczyk and Zmuda,PRC91(2015)0455013. Pion puzzleData from MiniBooNE and MINERvA and simulation are all incompatibleFlux-integrated differential crosssection are not comparable(unless 2 experiments use sameneutrino beam)Two data set are related by amodel ( GENIE neutrinointeraction generator).MINERvA data describe theshape well, but MiniBooNE datahave better normalizationagreement Teppei Katori, Queen Mary University of London2017/12/2049
MiniBooNE,PRD83(2011)052009Lalakulich et al,PRC87(2013)014602, Buss et al,Phys.Rept.512(2012)13. Pion puzzleFor long baseline oscillationexperiments, theory has to beable to describe the full finalstates of all particles!Final state interaction- Cascade model as a standard of the community- Advanced models are not available for event-by-event simulationCC1po productionnZ DnUlrichMosel(Giessen)µpopex) Giessen BUU transport model- Developed for heavy ion collision, andnow used to calculate final stateTeppei Katori, Queen Mary University of London2017/12/20interactions of pions in nuclear media50
3. Pion puzzleFor long baseline oscillationexperiments, theory has to beable to describe the full finalstates of all particles!Final state interaction- Cascade model as a standard of the community- Advanced models are not available for event-by-event simulationCC1poproductionnZ Dnµpopion scatteringp N à p NUlrichMosel(Giessen)pex) Giessen BUU transport model- Developed for heavy ion collision, andnow used to calculate final stateTeppei Katori, Queen Mary University of London2017/12/20interactions of pions in nuclear media51
3. Pion puzzleFor long baseline oscillationexperiments, theory has to beable to describe the full finalstates of all particles!Final state interaction- Cascade model as a standard of the community- Advanced models are not available for event-by-event simulationCC1poproductionnZ Dnµpopion scatteringp N à p NUlrichMosel(Giessen)ppion absorptionp NàD NàN Nex) Giessen BUU transport model- Developed for heavy ion collision, andnow used to calculate final stateTeppei Katori, Queen Mary University of London2017/12/20interactions of pions in nuclear media52
3. Pion puzzleFor long baseline oscillationexperiments, theory has to beable to describe the full finalstates of all particles!Final state interaction- Cascade model as a standard of the community- Advanced models are not available for event-by-event simulationCC1poproductionnZ DµpopnCC1p productionnZ DNpion scatteringp N à p NUlrichMosel(Giessen)µp Ncharge exchangep nàpo ppion absorptionp NàD NàN NTo get right prediction, you need ex) Giessen BUU transport model1. neutrino flux prediction- Developed for heavy ion collision, and2. pion production modelnow used to calculate final stateTeppei Katori, Queen Mary University of London2017/12/203. final state interactioninteractions of pions in nuclear media53
Alvarez-Ruso et al,NewJ.Phys.16(2014)075015, Morfin et al, AHEP(2012)934597Garvey et al.,Phys.Rept.580 (2015) 13. Open question of neutrino interaction physicsThe new data raised doubts in the areas wellunderstood. The list of new puzzles is quite long andseems to be expanding CCQE puzzle- Low Q2 suppression, high Q2 enhancement, high normalizationJanà presence of short and long range nucleon correlationsSobczyk(Wroclaw)ANL-BNL puzzle- Normalization difference between ANL and BNL bubble chamber pion dataà After correcting BNL normalization, ANL and BNL data agreeCoherent pion puzzle- Is there charged current coherent pion production?à yes it is, but details of kinematic need to be studied morePion puzzle- MiniBooNE and MINERvA pion kinematic data are incompatible under any modelsà ?Teppei Katori, Queen Mary University of London2017/12/2054
Wilkinson et al,PRD90(2014)112017,Graczyk et al,PRD80(2009)093001Wu et al,PRC91(2015)035203, Alvarez-Ruso, arXiv:1510.062663. Summary of resonance region for oscillationDeuteron target bubble chamber data are used to tune resonance models fornuclear target. However, 2 data set from Argonne (ANL) and Brookhaven (BNL)disagree their normalization 25% (ANL-BNL puzzle).à origin of 20-30% error on MARESRecent re-analysis found a normalization problem on BNLRecent fit on re-analyzed ANL-BNL data shows on CA5(0) error is 6%. This wouldgive 6-10% error on MARES for experimentalist. However, Wu et al pointed out there might be significant contribution of nucleareffect in bubble chamber data. This mean, perhaps, cross section extracted by reanalyzed ANL-BNL would be underestimated?!MARES imitates all normalization errors associated with SPP data (CA5(0), MARES,nuclear effect, etc). Unless all mysteries are solved (including MiniBooNEMINERvA tension, pion puzzle), MARES error stays 20-30%.Teppei Katori, Queen Mary University of London2017/12/2055
Subscribe “NuSTEC News”E-mail to listserv@fnal.gov, Leave the subject line blank, Type "subscribe nustec-news firstname lastname"Conclusion(or just send e-mail to me, katori@FNAL.GOV)like “@nuxsec” on Facebook page, use hashtag #nuxsecTremendous amount of activities, new data, new theories (NuInt ies/Check slides from NuSTEC schools for further studieshttp://nustec.fnal.gov/nustec-school/1 to 10 GeV neutrino interaction measurements are crucial to successful nextgeneration neutrino oscillation experiments (DUNE, Hyper-K)This moment, data from MiniBooNE, T2K, MINERvA, and ArgoNeuT play majorroles to develop neutrino interaction modelsThank you for your attention!Teppei Katori, Queen Mary University of London2017/12/2056
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EMC effect Weak interaction Neutrino oscillation 2017/12/20 1 Spin physics Dark matter Leptonic CP violation Teppei Katori, Queen Mary University of London nuclear many-body problem Nucleon correlation Fun Time
