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Event Rate Calculations
Need to check: nue-16O, NC nubar
Todo list
AB=Alex Beck; FB=Farzan Beroz; RC=Rachel Carr; ZM=Zander Moss; DR=Diane Reitzner; KS=Kate Scholberg
Blue is completely done
Red is high priority
Orange is lower priority: need by end of study
Grey is lowest priority-- should do eventually
| Channel | Cross-section | Smearing | Post-smearing efficiencies | |
|---|---|---|---|---|
| Interaction products | Energy resolution | |||
| IBD | Provided by RC; [Ref] | Simple model Enu-1.3 MeV;will refine | Provided by AB for SK1/SK2 [Ref]; updated for WCsim by ZM, AB | Provided by AB for SK1/SK2; updated for WCsim by ZM, AB |
| Neutrino-electron elastic scattering | Provided by RC; [Ref] | Provided by RC | AB for energy resolution of scattered electron for SK1/SK2;updated for WCsim by ZM, AB | Provided by AB for SK1/SK2; updated for WCsim for ZM/AB |
| O-16 CC nue+O->e- + F | Provided by RC; [Ref] | Simple model Enu-15.4 MeV | Provided by AB for SK1/SK2 ; updated for WCsim by ZM/AB | Provided by AB for SK1/SK2; updated for WCsim by ZM/AB |
| O-16 CC nuebar+O->e+ + N | Provided by AB; [Ref] | Simple model Enu-10.3 MeV | Provided by AB for SK1/SK2; updated for WCsim by ZM/AB | Provided by AB for SK1/SK2; updated for WCsim by ZM/AB |
| O-18 CC nue+O->e- + F | ||||
| O-16 NC nux + O -> nux+ X + gamma | Provided by RC; [Ref] | DR for gamma distribution | AB, FB, ZM for detector response with WCsim; need further WCsim checks | AB for response SK1/SK2; updated for WCsim by AB |
| Ar-40 CC nue + Ar -> e- + K | Provided by AB; [Ref] | Simple model for lepton, Enu-1.5 MeV; deexcitation gammas provided by DR;[Ref]; adding in gamma energy | AB [Icarus ref]; need update for LBNE | Assuming 5 MeV threshold; eventually need refined info |
| Ar-40 CC nuebar + Ar -> e+ + Cl | Provided by AB; [Ref] | Simple model for lepton, Enu-6.5 MeV (guessed ?); deexcitation gammas unknown | AB [Icarus ref]; need update for LNBE | Assuming 5 MeV threshold; eventually need refined info |
| Ar-40 NC nux + Ar -> nux + X + gamma | Provided by AB; [From plot; no source ref] | No info | No info | No info |
| Others? e.g other isotopes excitations, p/n emission... | ||||
Energy in the detector is the total energy an electron would have (i.e. including rest mass energy of an electron).
For LAr, we assume gammas are visible and they are included in the interaction product energy.
Example output
Event rate calculations using GLoBES front end.
The fluxes are in neutrinos per cm^2 per 0.2 MeV bin per time interval.
Green: sum of numu, nutau, numubar, nutaubar; Red: nue; Black: nuebar
Event rate plots are for SK1 parameters, 100 kton mass. They show events per 0.5 MeV bin.
Solid (left): events detected per neutrino energy.
Dashed(right): events per detected energy, after energy smearing and efficiency. This is the distribution that would be observed. (Smearing in GLoBES includes product distribution and detector resolution.)
Black: IBD; Red: elastic scattering, all flavors; Green: nue on 16-O;Blue: nuebar on 16-O; Cyan: NC excitation events on 16-O, sum of all; Magenta: total
These plots are for Jim Kneller's flux file, integrated over the full time interval:
Talk from INT LBNE Physics workshop:
INT talk
SVN repository info
To get the code, first request access from Brett Viren as per instructions from link above
