A Search for Rare Decay D0 --> mu+mu - High Energy Physics UPRM

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ISOS ïþëÿ÷ ¡ ü&ë&÷¢üÕëÿ÷£ ë7üü í ë7ü îµü û4.8 Optimization of the Selection Criteria 80”Table 4.6: Cut values for each variable considered in the optimization process.Variable NameVertex IDCut AppliedCLSISOP ïþëÿ÷ ¡ ü&ë&÷¢üÕëÿ÷£Ò0š¦½úñûµü ínü*øúý÷‰ìö÷ë7ü¦÷ìG÷'ûµü4÷ì¨ë÷‰ü*ùK/ ‡ ¨ïñûµü]õ½¥¤§¦Muon IDMISSPLIMUCLMeson IDïþë7ü]ùµü*îúý÷‰ìö÷ë7ü¦÷ìG÷'îµü4÷ìG÷'û© … “K ‹“¥4.8.2 Optimization Based on SensitivityAll possible cut sets that could be formed from the cut values in Table 4.6 wereconsidered. The total number of cut sets was 26244. The sensitivity was calculated foreach cut set as presented in eq.(4.9). The optimum cut set was defined as the one with thelowest sensitivity.
ççÍ¡Chapter 5Results and Conclusions5.1 MisIDThe measurement of the percentage of pions that were misidentified as muonswas carried out using a large sample K†« ofevents. Results from this study are presented in Figure 5.1 for which the following muonidentification cuts were applied:ƒ “ ˆ “ Šdecays using Type-9 K†« dataInner Muon CL¦£.MISSPL¥ .We can see that for low momentum the probability of pion misidentification is greaterthan for high momentum for real data as well as for Monte Carlo simulated data. This is81
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A Search for the Rare Decay D£¥¤
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ResumenEste trabajo de tesis presen
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AcknowledgmentsThere are so many pe
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to work on their experiment. To all
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extremos que ésta nos presenta. Y
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amigos de universidad, Arnulfo Barr
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1.2.1 Conservation of Angular Momen
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4. Vertex z Positions . . . . . . .
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List of Tables2.1 Chronological bra
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2.4 The FOCUS Spectrometer . . . .
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M2: Magnet Number 2.: Lorentz Dimuo
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1.1 The Standard Model 2`the branch
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families of matter. These are divid
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The Standard Model 6Each of the thr
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ŽuŽd’ ‘ “”“ “-• —
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%1.2 Conservation Laws 10current be
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Conservation Laws 12`1.2handed lept
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Conservation Laws 14`1.2A §Aº‰
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However, these states are +63-1.3 C
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ÇÇÇÇÆÈoH ‚ ¿ oH ‚ ¿ ‚
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W¦¨ , , and © o ¨ cÏ Î7Ô¦Ca
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1.4 GIM Mechanism 22`1.4 GIM Mechan
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1.5 Rare and Forbidden Decays 24whe
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55 q z4so ¤ pj¥4osoÛ { J zF45 (1
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Notice that AA5 q z ¤ q z oiÛ z?
Page 52 and 53: Chapter 2Previous Works2.1 FCNC Dec
Page 54 and 55: ŠŠz‘i2.2 Previous Searches for
Page 56 and 57: ˜¥˜‘2.2 Previous Searches for
Page 58 and 59: ··i2.2 Previous Searches for Rare
Page 60 and 61: i2.3 FOCUS 382.3 FOCUS2.3.1 Introdu
Page 62 and 63: ¥i2.3 FOCUS 40were transmited with
Page 64 and 65: i2.3 FOCUS 42the experimental targe
Page 66 and 67: Chapter 3ObjectivesAs a departure p
Page 68 and 69: Chapter 4ProcedureThis chapter will
Page 70 and 71: 4.2 Reconstruction Process 48Recons
Page 72 and 73: 4.3 Data Selection 50Figure 4.1 sho
Page 74 and 75: °4.3 Data Selection 52Using inform
Page 76 and 77: i4.3 Data Selection 54to detect muo
Page 78 and 79: ›4.3 Data Selection 56Information
Page 80 and 81: kŸnJÑ,ššJBn©kŸnJšz¥{{[“
Page 82 and 83: 4.3 Data Selection 60iReconstructio
Page 84 and 85: ‘°4.3 Data Selection 62iTable 4.
Page 86 and 87: gJ\·+UpUW†WX†UUX†UUpWWtArs;u
Page 88 and 89: 4.5 Monte Carlo Simulation 66ia spe
Page 90 and 91: ”4.6 Analysis Methodology 68signa
Page 92 and 93: signal region and determined the co
Page 94 and 95: sideband was defined as £Í£¥Í
Page 96 and 97: ƒ”4.7 Background Study 74K†«
Page 98 and 99: 4.7 Background Study 76”Figure 4.
Page 100 and 101: 4.8 Optimization of the Selection C
Page 104 and 105: 5.2 Background Ratio 82”Figure 5.
Page 106 and 107: 5.3 Skimming Results 84”Figure 5.
Page 108 and 109: ”5.4 Cut Optimization Results 86b
Page 110 and 111: ¥£¨ … D† ƒ ‡ ˆ ‡ Š
Page 112 and 113: … D† ƒo‡ ˆ ‡ Š ‹ —£
Page 114 and 115: List of References[1] M. Herrero, T
Page 116 and 117: æææ”Bibliography 94[19] T. Sj
Page 118 and 119: æˆææBibliography 96”[37] Ferm
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