Sphero(i)city technicalities Hèctor Bello Martinez 1,2 Antonio Ortìz Velazquez 2 1 Arturo Fernandez Tellez 1. (FCFM-BUAP) 2.(ICN-UNAM) ACO Hèctor Bello Martinez 1 meeting 11 de febrero 2017
Outline ● The efficciency for the pt spectra calculated inside the cuts on So true and So reconstructed for 10% So perc, Rebinning for high pt and considering 0< So <0.3 (no perc) ● Response for Sopc_m vs So_m ● Answere to referee’s questions in the text Hèctor Bello Martinez 2
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Comparison for percentile bins with best statistics. SPHEROCITY SPHERICITY ● Greater eff. At high p T We need to understand why this happen Hèctor Bello Martinez 5 for Isotropic events with low mult
So response for .tracks&particles within pt>0.15. For efficiency the spectra Must be taken for events inside red boxes, otherwise jet contamination could led to down the efficiency for low Nch Hèctor Bello Martinez 6
Efficiency So_{t} not = So_{r} cases: Only primary both in rec and true MB Jetty Isotropic 0.0% <So_{r}< 10% 90% <So_{r}< 100% & 0.0% <So_{t}< 10% & 90% <So_{t}< 100% Small Nch dependence also not good stat Pt Rebinning: const Int_t nPtBins = 43; Double_t xBins[nPtBins+1]={0.01,0.1,0.12,0.14,0.16,0.18,0.2,0.2,0.3,0.35,0.4,0.45,0.5,0.55,0.6,0.65, 0.7,0.75,0.8,0.85,0.9,0.95,1,1.1,1.2,1.3,1.4,1.5,1.6,1.7,1.8,1.9,2,2.2,2.4,2.6,2.8,3,3.5,4,5,7,10,20} Hèctor Bello Martinez 7
Efficiency So_{t} not = So_{r} cases: Only primary both in rec and true MB Jetty Isotropic 0.0 <So_{r}<0.3 0.7 <So_{r}< 1.0 & 0.0 <So_{t}<0.3 & 0.7 <So_{t}< 1.0 better stat Pt Rebinning: const Int_t nPtBins = 42; Double_t xBins[nPtBins+1]={0.01,0.1,0.12,0.14,0.16,0.18,0.2,0.2,0.3,0.35,0.4,0.45,0.5,0.55,0.6,0.65, 0.7,0.75,0.8,0.85,0.9,0.95,1,1.1,1.2,1.3,1.4,1.5,1.6,1.7,1.8,1.9,2,2.2,2.4,2.6,2.8,3,3.5,4,5,10,20} Hèctor Bello Martinez 8
So response (som vs somperc) The idea: to get Soperc response matrix (Sopc_t vs Sopc_m) ● Hèctor Bello Martinez 9
So response (som vs somperc) The idea: to get Soperc response matrix (Sopc_t vs Sopc_m) ● Something wrong first bin (Under investigation) Flat is spected if all are 10% pc Hèctor Bello Martinez 10
Conclusions ● The effect just reflects that spherocity is quite sensitive to high pT particles. ● The slop down on efficiency increase when calculating the spectra correctly in the So true and So reconstructed cuts avoiding the jet contamination. ● To do Check the percentile selection ● Get response matrix for unfold So percentile So true Unfold by weigths the yield Continue with the analisis of <pt> vs Nch for spherocity bins. Hèctor Bello Martinez 11
Backup Hèctor Bello Martinez 12
Efficiency So_{t} not = So_{r} cases: Only primary both in rec and true MB Jetty Isotropic 0.0 <So_{r}<0.3 0.7 <So_{r}< 1.0 & 0.0 <So_{t}<0.3 & 0.7 <So_{t}< 1.0 good stat Pt Rebinning: const Int_t nPtBins = 43; Double_t xBins[nPtBins+1]={0.01,0.1,0.12,0.14,0.16,0.18,0.2,0.2,0.3,0.35,0.4,0.45,0.5,0.55,0.6,0.65, 0.7,0.75,0.8,0.85,0.9,0.95,1,1.1,1.2,1.3,1.4,1.5,1.6,1.7,1.8,1.9,2,2.2,2.4,2.6,2.8,3,3.5,4,5,7,10,20} Hèctor Bello Martinez 13
Efficiency So_{t} not = So_{r} cases: Only primary both in rec and true MB Jetty Isotropic 0.0% <So_{r}< 20% 80% <So_{r}< 100% & 0.0% <So_{t}< 20% & 80% <So_{t}< 100% Efficiency increase Hèctor Bello Martinez 14
Efficiency So_{t} not = So_{r} cases: Only primary both in rec and true MB Jetty Isotropic 0.0% <So_{r}< 10% 90% <So_{r}< 100% & 0.0% <So_{t}< 10% & 90% <So_{t}< 100% Not good stat Hèctor Bello Martinez 15
Some issues at the TPC runs (LHC15f) (ex. good run 226452 acc. RCT) Some missing chambers as seen in: ● https://aliqatpc.web.cern.ch/aliqatpc/data/2015/LHC15f/pass2/000226452/eta_ ● phi_pt.png Specially eta<0 region https://aliqatpc.web.cern.ch/aliqatpc/data/2015/LHC15f/pass2/000226452/raw QAInformation.png Hèctor Bello Martinez 16
So Mean values (true vs rec) for Nch and So bins Difference of the order of 0.01, could give contamination of dijets Recalculation of efficiency with spectra within the respective mean So values is ongoing Hèctor Bello Martinez 17
So response for .tracks&particles within 5>pt>0.15. Isotropic mean increase due to the suppresion of high pt Jetty contribution to high Nch is supresed Hèctor Bello Martinez 18
So response for .tracks&particles within 2>pt>0.15. Isotropic mean increase due to the suppresion of high pt Jetty contribution to high Nch is supresed Hèctor Bello Martinez 19
So response for .tracks&particles within 1.5>pt>0.15. Isotropic mean increase due to the suppresion of high pt Jetty contribution to high Nch is supresed Hèctor Bello Martinez 20
So, we analyze the efficiency for 3 cases: |eta|<0.8, -0.8<eta<0, 0.8>eta>0. No So selection ● Hèctor Bello Martinez 21
So, we analyze the efficiency for 3 cases: |eta|<0.8, -0.8<eta<0, 0.8>eta>0. For jetty ● Hèctor Bello Martinez 22
So, we analyze the efficiency for 3 cases: |eta|<0.8, -0.8<eta<0, 0.8>eta>0. For Isotropic ● Hèctor Bello Martinez 23
Phi vs pt, 3 cases: |eta|<0.8, -0.8<eta<0, 0.8>eta>0. No So selection. Hèctor Bello Martinez 24
Phi vs pt, 3 cases: |eta|<0.8, -0.8<eta<0, 0.8>eta>0. Jetty. presence of the missing chambers Hèctor Bello Martinez 25
Phi vs pt, 3 cases: |eta|<0.8, -0.8<eta<0, 0.8>eta>0. Isotropic. presence of the missing chambers Hèctor Bello Martinez 26
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