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Search for doubly charged Higgs bosons in three lepton channels

at √s=7TeV at CMS(Fall11 MC data analysis)

01. 08. 2012. Sungeun LeeSungkyunkwan University

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Introduction• Existence of non-zero neutrino masses• Type II seesaw mechanism• Higgs triplet model• Pair-production process & Associated production process

• limits on the F++ mass• Limit between 112 and 355 GeV

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AnalysisWhen one lepton is missing in pair production channel• Luminosity : 4.638 fb-1• Lepton selection - muon : pt>10, | |<2.4, Global Muon, nchi2<10, d0<0.02, sip<4,

Good muon, valid hit>20, nstation>0 - electron : pt>10, | |<2.5, nchi2<10, d0<0.02, sip<4, eidMedium

• Event selection - - (between the same sign di-leptons)

• Fall11 data

ptpt

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eeee eeem eemm

nlep>=2- muon : pt>10, | |<2.4, Global Muon, nchi2<10, d0<0.02, sip<4, Good muon, valid hit>20, nstation>0- electron : pt>10, | |<2.5, nchi2<10, d0<0.02, sip<4, eidMedium

Signal mass 150GeV Cut variable (1)one lepton missing

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nlep>=2- muon : pt>10, | |<2.4, Global Muon, nchi2<10, d0<0.02, sip<4, Good muon, valid hit>20, nstation>0- electron : pt>10, | |<2.5, nchi2<10, d0<0.02, sip<4, eidMedium

emem emmm mmmm

Signal mass 150GeV Cut variable (2)one lepton missing

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eeee eeem eemm

nlep>=2- muon : pt>10, | |<2.4, Global Muon, nchi2<10, d0<0.02, sip<4, Good muon, valid hit>20, nstation>0- electron : pt>10, | |<2.5, nchi2<10, d0<0.02, sip<4, eidMedium

Signal mass 150GeV Mass distribution (1)one lepton missing

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emem emmm mmmm

nlep>=2- muon : pt>10, | |<2.4, Global Muon, nchi2<10, d0<0.02, sip<4, Good muon, valid hit>20, nstation>0- electron : pt>10, | |<2.5, nchi2<10, d0<0.02, sip<4, eidMedium

Signal mass 150GeV Mass distribution (2)one lepton missing

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Events (1) – one lepton missingeeee 150GeV 170GeV 200GeV 250GeV 300GeV 350GeV 400GeV 500GeV

Signal 64.98 35.43 17.25 4.70 0.95 0.83 0.62 0.14

Background 22.52 10.36 4.83 0.73 0.028 0.043 0.043 0.0086

data 34 20 12 5 2 2 2 1

eeem 150GeV 170GeV 200GeV 250GeV 300GeV 350GeV 400GeV 500GeV

Signal 63.38 34.31 15.31 4.47 1.58 0.64 0.59 0.050

Background 39.67 19.61 8.68 1.49 0.32 0.13 0.14 0.00032

data 44 27 15 5 2 3 2 0

eemm 150GeV 170GeV 200GeV 250GeV 300GeV 350GeV 400GeV 500GeV

Signal 116.82 61.24 25.07 9.68 4.28 2.28 0.29 0.15

Background 19.79 8.99 2.91 1.00 0.56 0.56 0.00032 0.00032

data 15 3 1 0 0 0 0 0

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Events (2) – one lepton missingemem 150GeV 170GeV 200GeV 250GeV 300GeV 350GeV 400GeV 500GeV

Signal 56.01 32.75 15.78 2.83 0.84 0.64 0.57 0.056

Background 46.64 22.82 14.04 0.90 0.095 0.15 0.23 0.012

data 50 22 10 2 0 0 2 0

emmm 150GeV 170GeV 200GeV 250GeV 300GeV 350GeV 400GeV 500GeV

Signal 50.79 37.85 13.90 5.66 1.47 0.30 0.10 0.042

Background 51.15 56.44 16.51 7.25 0.98 0.055 0.0036 0.0036

data 63 70 14 6 2 0 0 0

mmmm 150GeV 170GeV 200GeV 250GeV 300GeV 350GeV 400GeV 500GeV

Signal 58.89 31.37 11.96 3.87 1.84 0.24 0.21 0.048

Background 32.88 15.58 3.27 1.20 0.51 0.0049 0.0052 0.00032

data 53 23 5 1 0 0 0 0

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Limit of eeee channelone lepton missing

Exp. Limit : 204GeVObs. Limit : 174GeV

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Limit of eeem channelone lepton missing

Exp. Limit : 198GeVObs. Limit : 171GeV

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Limit of eemm channelone lepton missing

Exp. Limit : 254GeVObs. Limit : 277GeV

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Limit of emem channelone lepton missing

Exp. Limit : 186GeVObs. Limit : 187GeV

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Limit of emmm channelone lepton missing

Exp. Limit : 186GeVObs. Limit : 195GeV

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Limit of mmmm channelone lepton missing

Exp. Limit : 195GeVObs. Limit : 196GeV

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Signal mass 150GeV Cut variable (1)Associated channel

eeee eeem eemm

nlep>=2- muon : pt>10, | |<2.4, Global Muon, nchi2<10, d0<0.02, sip<4, Good muon, valid hit>20, nstation>0- electron : pt>10, | |<2.5, nchi2<10, d0<0.02, sip<4, eidMedium

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Signal mass 150GeV Cut variable (2)Associated channel

nlep>=2- muon : pt>10, | |<2.4, Global Muon, nchi2<10, d0<0.02, sip<4, Good muon, valid hit>20, nstation>0- electron : pt>10, | |<2.5, nchi2<10, d0<0.02, sip<4, eidMedium

emem emmm mmmm

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Signal mass 150GeV Mass distribution (1)Associated channel

eeee eeem eemm

nlep>=2- muon : pt>10, | |<2.4, Global Muon, nchi2<10, d0<0.02, sip<4, Good muon, valid hit>20, nstation>0- electron : pt>10, | |<2.5, nchi2<10, d0<0.02, sip<4, eidMedium

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Signal mass 150GeV Mass distribution (2)Associated channel

emem emmm mmmm

nlep>=2- muon : pt>10, | |<2.4, Global Muon, nchi2<10, d0<0.02, sip<4, Good muon, valid hit>20, nstation>0- electron : pt>10, | |<2.5, nchi2<10, d0<0.02, sip<4, eidMedium

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Events (1) – Associated channeleeee 150GeV 170GeV 200GeV 250GeV 300GeV 350GeV 400GeV 500GeV

Signal 216.54 152.98 76.19 18.11 10.12 2.81 2.06 0.70

Background 22.52 22.52 11.86 0.73 0.73 0.043 0.043 0.017

data 34 34 21 5 5 2 2 1

eeem 150GeV 170GeV 200GeV 250GeV 300GeV 350GeV 400GeV 500GeV

Signal 229.02 165.87 83.64 18.09 13.00 4.35 2.18 0.95

Background 39.67 39.67 19.61 1.49 2.87 0.32 0.14 0.14

data 44 44 27 5 6 3 2 2

eemm 150GeV 170GeV 200GeV 250GeV 300GeV 350GeV 400GeV 500GeV

Signal 483.16 344.54 168.74 66.38 22.47 11.93 4.45 0.71

Background 19.7903 21.90 8.99 5.14 0.71 0.71 0.12 0.00032

data 15 15 3 1 0 0 0 0

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Events (2) – Associated channelemem 150GeV 170GeV 200GeV 250GeV 300GeV 350GeV 400GeV 500GeV

Signal 246.18 178.40 72.32 26.29 8.87 5.59 2.64 0.94

Background 46.64 46.64 14.04 4.14 0.90 0.90 0.23 0.16

data 50 50 10 3 2 2 2 2

emmm 150GeV 170GeV 200GeV 250GeV 300GeV 350GeV 400GeV 500GeV

Signal 266.61 201.74 82.00 31.94 9.72 6.16 1.49 0.61

Background 51.15 56.44 16.51 6.27 0.98 0.98 0.069 0.057

data 63 70 14 4 2 2 0 1

mmmm 150GeV 170GeV 200GeV 250GeV 300GeV 350GeV 400GeV 500GeV

Signal 394.39 215.41 105.24 40.82 14.58 7.20 1.85 0.75

Background 36.97 15.58 7.37 3.27 0.51 0.30 0.022 0.0061

data 55 23 11 5 0 0 0 0

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Limit of associated eeee channel

Exp. Limit : 293GeVObs. Limit : 250GeV

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Limit of associated eeem channel

Exp. Limit : 329GeVObs. Limit : 269GeV

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Limit of associated eemm channel

Exp. Limit : 415GeVObs. Limit : 420GeV

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Limit of associated emem channel

Exp. Limit : 348GeVObs. Limit : 299GeV

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Limit of associated emmm channel

Exp. Limit : 330GeVObs. Limit : 312GeV

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Limit of associated mmmm channel

Exp. Limit : 357GeVObs. Limit : 363GeV

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3 Lepton sample publish

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Plan

• Correction of pileup reweighting codes• Summer12 MC PFPAT data analysis• CUT variables…

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Back up

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Events• <eeee>• mass(GeV) : 150 170 200 250 300 350 400 500• S : 64.9841 35.4304 17.2492 4.69681 0.947816 0.826979 0.62114 0.135293• B : 22.5202 10.3578 4.83333 0.726678 0.0280411 0.043167 0.043167 0.00857024• D : 34 20 12 5 2 2 2 1

• <eeem>• mass(GeV) : 150 170 200 250 300 350 400 500• S : 63.3803 34.311 15.3072 4.46776 1.58273 0.640187 0.593934 0.0503739• B : 39.6707 19.6065 8.67808 1.48814 0.315089 0.130486 0.13862 0.000315804• D : 44 27 15 5 3 2 2 0

• <eemm>• mass(GeV) : 150 170 200 250 300 350 400 500• S : 116.822 61.2393 25.0744 9.68248 4.27894 2.28309 0.289205 0.145799• B : 19.7903 8.99028 2.91216 0.99708 0.564752 0.564752 0.000315804 0.000315804• D : 15 3 1 0 0 0 0 0

• <emem>• mass(GeV) : 150 170 200 250 300 350 400 500• S : 56.0087 32.7474 15.784 2.82923 0.838134 0.643711 0.571472 0.0562759• B : 46.6354 22.8186 14.0442 0.899486 0.0954917 0.149004 0.228498 0.0115323• D : 50 22 10 2 0 0 2 0

• <emmm>• mass(GeV) : 150 170 200 250 300 350 400 500• S : 50.7907 37.8536 13.8968 5.65774 1.47306 0.295304 0.10224 0.0418393• B : 51.153 56.438 16.5083 7.25103 0.980587 0.0551669 0.00359362 0.00359362• D : 63 70 14 6 2 0 0 0

• <mmmm>• mass(GeV) : 150 170 200 250 300 350 400 500• S : 58.8941 31.3744 11.9567 3.86708 1.83828 0.23958 0.210045 0.0484155• B : 32.8792 15.5773 3.2697 1.20227 0.511467 0.00485684 0.00517264 0.000315804• D : 53 23 5 1 0 0 0 0