μ/e Id and Energy Resolution

1. μ/e Id and Energy Resolution Pandora identifies μ/e and returns their momentum. • For the μ̃ analysis we have neglected μ -> μγbremsstrahlung (~3%). The FSR correction to the μ momentum distribution was applied in the fitting procedure together with the ISR correction. • For the ẽ, ~ 50% of the events have Bremsγ and 30% FSR. It is not possible to tell apart FSR γ from Bremsγ when the γ radiation takes place before the TPC. The e energy should be corrected to take into account the γ radiation. Brems depends on B, Brems with conversion on material budget. FSR, Brems must be included in detector resolution. • => correct Ee-/e+ LCD WG6 meeting

2. e Energy Correction Event 0, 3 tracks MC Collection (Ee before radiation) TMGO 0 id -11 E 314.01 theta 123.80 phi -134.43 TMGO 1 id 22 E 128.88 theta 123.80 phi -134.48 simu bits: bremsγ TMGO 2 id 11 E 213.22 theta 98.96 phi 66.18 RC Collection (before correction) RPFO 0 id 22 E 64.97 theta 125.05 phi -134.90 RPFO 1 id 22 E 0.42 theta 124.40 phi -136.34 RPFO 2 id 22 E 0.12 theta 124.36 phi -133.68 RPFO 3 id 22 E 2.16 theta 124.33 phi -134.60 RPFO 4 id 22 E 67.70 theta 123.83 phi -134.47 RPFO 5 id -11 E 184.32 theta 123.80 phi -134.40 RPFO 6 id 22 E 0.19 theta 123.69 phi -132.81 RPFO 7 id 22 E 1.52 theta 122.81 phi -135.45 RPFO 8 id 11 E 212.39 theta 98.96 phi 66.18 The 3rd track is not a PFO object track 2 nhits 8 xthetad 123.797 pTrk 245.331 Combine RPFO 5 + 0 + 4 LCD WG6 meeting

3. e Energy Correction Event 0, 3 tracks MC Collection (Ee before radiation) TMGO 0 id -11 E 314.01 theta 123.80 phi -134.43 TMGO 1 id 22 E 128.88 theta 123.80 phi -134.48 simu bits: bremsγ TMGO 2 id 11 E 213.22 theta 98.96 phi 66.18 RC Collection (after correction) RPFO 0 id 22 E 0.42 theta 124.40 phi -136.34 RPFO 1 id 22 E 0.12 theta 124.36 phi -133.68 RPFO 2 id 22 E 2.16 theta 124.33 phi -134.60 RPFO 3 id -11 E 317.00 theta 123.80 phi -134.40 RPFO 4 id 22 E 0.19 theta 123.69 phi -132.81 RPFO 5 id 22 E 1.52 theta 122.81 phi -135.45 RPFO 6 id 11 E 212.39 theta 98.96 phi 66.18 LCD WG6 meeting

4. e Energy Correction Event 3, 4 tracks MC Collection (Ee before radiation) TMGO 2 id -11 E 522.81 theta 118.38 phi -21.08 e- or e+ TMGO 5 id 11 E 610.85 theta 29.59 phi -179.70 e- or e+ TMGO 6 id 22 E 84.01 theta 29.59 phi -179.69 simu bits: brems -> conversion RC Collection (before correction) RPFO 4 id -11 E 522.85 theta 118.38 phi -21.08 RPFO 5 id 22 E 0.98 theta 118.20 phi -23.38 RPFO 6 id 22 E 4.72 theta 118.04 phi -22.01 RPFO 15 id 22 E 7.14 theta 29.69 phi -178.57 RPFO 16 id 11 E 521.46 theta 29.59 phi -179.70 RPFO 17 id -11 E 71.90 theta 29.58 phi -178.56 The fourth track is not seen as a PFO object track 2 nhits 81 xthetad 29.5777 phi 176.047 pTrk 22.7111 Combine 16 and 17 into a γ and combine it with this track LCD WG6 meeting

5. e Energy Correction Event 3, 4 tracks MC Collection TMGO 2 id -11 E 522.81 theta 118.38 phi -21.08 e- or e+ TMGO 5 id 11 E 610.85 theta 29.59 phi -179.70 e- or e+ TMGO 6 id 22 E 84.01 theta 29.59 phi -179.69 simu bits: brems and conversion RC Collection (after correction) RPFO 4 id -11 E 522.85 theta 118.38 phi -21.08 X RPFO 6 id 22 E 4.72 theta 118.04 phi -22.01 X RPFO 8 id 22 E 2.01 theta 117.61 phi -21.17 X RPFO 9 id 22 E 3.39 theta 117.31 phi -20.70 X RPFO 15 id 22 E 7.14 theta 29.69 phi -178.57 X RPFO 16 id 11 E 616.13 theta 29.59 phi -179.70 X LCD WG6 meeting

6. e Energy Correction FSR or Bremsstrahlungenergy correction For each e-/e+ get Pe Sum Eγ of all Eγ clusters with Eγ>5 GeV and such as θeγ<5°. If no γ; => no correction If Eγ < 3*0.15x√(Pe+Eγ) => Eec=Pe (no correction) If Eγ > 3*0.15x√(Pe+Eγ) => Eec=Pe+Eγ LCD WG6 meeting

7. e Energy Correction ΔE =E(true) – E (reco); E(true) is e-/e+ energy before FSR or Bremsstrahlung LCD WG6 meeting

8. LCD WG6 meeting