Search for Neutral MSSM Higgs Bosons Decaying to Tau Pairs in pp Collisions

This page contains the plots and supporting material of CMS-PAS-HIG-12-050

Table of contents

Abstract

A search for neutral Higgs bosons from the minimal supersymmetric extension of the standard model (MSSM) decaying to tau pairs is performed using events recorded by the CMS experiment at the LHC in 2011 and 2012 at a center-of-mass energy of 7 TeV and 8 TeV respectively. The dataset corresponds to an integrated luminosity of 17 fb-1, with 4.9 fb-1 at 7 TeV and 12.1 fb-1 at 8 TeV. To enhance the sensitivity to neutral MSSM Higgs bosons, the search includes the case where the Higgs boson is produced in association with a b-quark jet. No excess is observed in the tau-pair invariant-mass spectrum. Exclusion limits in the MSSM parameter space of m_A and tanbeta in the m_h_max scenario are presented.

Figures and tables from the PAS

Tables

Table 1 MuTau: Number of expected events in b-tag and no b-tag categories and signal efficiencies for MA=160 GeV
MuTau
Process B-Tag No B-Tag
Ztautau 928 65 78323 5026
QCD 531 84 15733 1172
W+jets 181 42 9065 711
Z+jets (l/jet faking tau) 17 5 1459 428
ttbar 122 23 368 45
Dibosons 37 6 319 48
Total Background 1816 117 105267 5216
Htautau 50 4 585 33
Data 1726 102728
MuTau
Signal Efficiency
ggH(160) 1.99 10^{-4} 1.78 10^{-2}
bbH(160) 2.74 10^{-3} 1.62 10^{-2}

Table 2 ETau: Number of expected events in b-tag and no b-tag categories and signal efficiencies for MA=160 GeV

ETau
Process B-Tag No B-Tag
Ztautau 333 24 24235 1533
QCD 178 27 8359 619
W+jets 95 24 3978 316
Z+jets (l/jet faking tau) 74 4 5518 298
ttbar 45 8 166 20
Dibosons 17 3 131 20
Total Background 742 45 42387 1876
Htautau 23 2 264 14
Data 695 42124
ETau
Signal Efficiency
ggH(160) 8.16 10^{-5} 7.94 10^{-3}
bbH(160) 1.27 10^{-3} 7.25 10^{-3}

Table 3 EMu: Number of expected events in b-tag and no b-tag categories and signal efficiencies for MA=160 GeV

EMu
Process B-Tag No B-Tag
Ztautau 572 21 43382 1355
QCD 144 41 3127 773
ttbar 1203 139 2069 194
Dibosons 263 40 2183 286
Total Background 2182 152 50761 1598
Htautau 27 2 305 12
Data 2024 51524
EMu
Signal Efficiency
ggH(160) 1.06 10^{-4} 9.52 10^{-3}
bbH(160) 1.50 10^{-3} 8.30 10^{-3}

Table 4 MuMu: Number of expected events in b-tag and no b-tag categories and signal efficiencies for MA=160 GeV

MuMu
Process B-Tag No B-Tag
Ztautau 155 8 19248 897
QCD 34 30 1546 117
W+jets 3 3 122 23
Zmumu 5783 935 1956286 131990
ttbar 246 33 5938 555
Dibosons 37 10 7066 1726
Total Background 6258 936 1990206 132006
Htautau 10 6 163 10
Data 6175 1953340
MuMu
Signal Efficiency
ggH(160) 3.05 10^{-5} 5.12 10^{-3}
bbH(160) 5.16 10^{-4} 4.28 10^{-3}

Table 5: Limit at 95% CL on tanbeta for different values of MA

Mass Expected tanbeta limit
mA (GeV) -2 sigma -1 sigma Median +1 sigma +2 sigma Obs. tanb Limit
90 3.25 5.18 7.19 8.91 10.6 5.45
130 3 3.84 4.94 5.74 6.89 5.05
140 3.54 4.46 5.23 5.79 6.77 5.4
200 5.01 5.69 6.91 8.3 9.44 4.88
250 5.99 7.7 9.26 11.1 12.7 5.3
300 8.3 10.5 12.4 14.4 16.6 7.68
350 10.8 13.5 16.1 18.7 21 10.4
400 12.9 16.3 19.1 22.2 24.6 13.7
450 16 19.4 23 26.2 29.4 17.3
500 18.7 23 26.9 31.1 35.8 20.8
600 24.8 30.3 36.4 41.7 47.4 29.7
700 32.2 39.8 47.8 55.9 63.4 39.3
800 40.8 51 61.4 74 98.3 48.6

Figures

Image File links Description
png pdf Figure 1a) MuTau: di-tau mass, no b-tag category
png pdf Figure 1b) ETau: di-tau mass, no b-tag category
png pdf Figure 1c) EMu: di-tau mass, no b-tag category
png pdf Figure 1d) MuMu: di-tau mass, no b-tag category
png pdf Figure 2a) MuTau: di-tau mass, b-tag category
png pdf Figure 2b) ETau: di-tau mass, b-tag category
png pdf Figure 2c) EMu: di-tau mass, b-tag category
png pdf Figure 2d) MuMu: di-tau mass, b-tag category
png pdf Figure 3: MA-tanbeta 95% CL Exclusion limit

Extra Material

Image File links Description
png pdf Extra Figure 1: MA-tanbeta 95%CL expected exclusion limit for different final states
png pdf Extra Figure 2: M_A-tanbeta 95%CL expected exclusion limit for b-tag/no-btag event
png pdf Extra Figure 3: MA-tanbeta 95% CL Exclusion limit: no expected limit shown
png pdf Extra Figure 4: MuTau: di-tau mass, no-btag category (linear scale)
png pdf Extra Figure 5: MuTau: di-tau mass, btag category (linear scale)
png pdf Extra Figure 6: EMu: Number of bjets
png pdf Extra Figure 7: EMu: PZeta variable in b-tag category

-- MonicaVazquezAcosta - 08-Nov-2012

Topic attachments
I Attachment History Action Size Date Who Comment
PDFpdf cmb_mA-tanb-transparent-noexpected.pdf r1 manage 125.6 K 2012-11-12 - 13:50 MonicaVazquezAcosta MA-tanbeta 95% CL Exclusion limit: no expected limit shown
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PDFpdf cmb_mA-tanb-transparent.pdf r1 manage 135.5 K 2012-11-12 - 13:49 MonicaVazquezAcosta MA-tanbeta 95% CL Exclusion limit
PNGpng cmb_mA-tanb-transparent.png r2 r1 manage 58.9 K 2012-11-12 - 22:25 MonicaVazquezAcosta MA-tanbeta 95% CL Exclusion limit
PDFpdf eleTau_btag_rescaled_7_8TeV_LOG.pdf r2 r1 manage 16.6 K 2012-11-09 - 21:44 MonicaVazquezAcosta ETau: di-tau mass, btag category
PNGpng eleTau_btag_rescaled_7_8TeV_LOG.png r2 r1 manage 18.7 K 2012-11-09 - 21:44 MonicaVazquezAcosta ETau: di-tau mass, btag category
PDFpdf eleTau_nobtag_rescaled_7_8TeV_LOG.pdf r2 r1 manage 18.2 K 2012-11-09 - 21:30 MonicaVazquezAcosta ETau: di-tau mass, no-btag category
PNGpng eleTau_nobtag_rescaled_7_8TeV_LOG.png r2 r1 manage 19.9 K 2012-11-09 - 21:30 MonicaVazquezAcosta ETau: di-tau mass, no-btag category
PDFpdf emu_btag_rescaled_7_8TeV_LOG.pdf r2 r1 manage 16.3 K 2012-11-09 - 21:49 MonicaVazquezAcosta EMu: di-tau mass, btag category
PNGpng emu_btag_rescaled_7_8TeV_LOG.png r2 r1 manage 17.2 K 2012-11-09 - 21:49 MonicaVazquezAcosta EMu: di-tau mass, btag category
PDFpdf emu_nobtag_rescaled_7_8TeV_LOG.pdf r2 r1 manage 17.6 K 2012-11-09 - 21:31 MonicaVazquezAcosta EMu: di-tau mass, no-btag category
PNGpng emu_nobtag_rescaled_7_8TeV_LOG.png r2 r1 manage 20.1 K 2012-11-09 - 21:33 MonicaVazquezAcosta EMu: di-tau mass, no-btag category
PNGpng muTau_btag_rescaled_7_8TeV.png r1 manage 18.1 K 2012-11-08 - 16:57 MonicaVazquezAcosta MuTau: di-tau mass, btag category
PDFpdf muTau_btag_rescaled_7_8TeV_LOG.pdf r2 r1 manage 16.6 K 2012-11-09 - 21:43 MonicaVazquezAcosta MuTau: di-tau mass, btag category
PNGpng muTau_btag_rescaled_7_8TeV_LOG.png r2 r1 manage 18.3 K 2012-11-09 - 21:43 MonicaVazquezAcosta MuTau: di-tau mass, btag category
PDFpdf muTau_nobtag_rescaled_7_8TeV.pdf r1 manage 17.3 K 2012-11-08 - 16:58 MonicaVazquezAcosta MuTau: di-tau mass, no-btag category
PNGpng muTau_nobtag_rescaled_7_8TeV.png r1 manage 18.7 K 2012-11-08 - 16:58 MonicaVazquezAcosta MuTau: di-tau mass, no-btag category
PDFpdf muTau_nobtag_rescaled_7_8TeV_LOG.pdf r2 r1 manage 18.0 K 2012-11-09 - 21:33 MonicaVazquezAcosta MuTau: di-tau mass, no-btag category
PNGpng muTau_nobtag_rescaled_7_8TeV_LOG.png r2 r1 manage 19.9 K 2012-11-09 - 21:34 MonicaVazquezAcosta MuTau: di-tau mass, no-btag category
PDFpdf mumu_btag_rescaled_7_8TeV_LOG.pdf r2 r1 manage 16.0 K 2012-11-09 - 21:48 MonicaVazquezAcosta MuMu: di-tau mass, btag category
PNGpng mumu_btag_rescaled_7_8TeV_LOG.png r2 r1 manage 16.5 K 2012-11-09 - 21:48 MonicaVazquezAcosta MuMu: di-tau mass, btag category
PDFpdf mumu_nobtag_rescaled_7_8TeV_LOG.pdf r1 manage 18.2 K 2012-11-08 - 16:53 MonicaVazquezAcosta MuMu: di-tau mass, no-btag category
PNGpng mumu_nobtag_rescaled_7_8TeV_LOG.png r1 manage 19.4 K 2012-11-08 - 16:54 MonicaVazquezAcosta MuMu: di-tau mass, no-btag category
PDFpdf nbjets_scaled_emu_2012.pdf r1 manage 15.1 K 2012-11-10 - 13:19 MonicaVazquezAcosta EMu: Number of b-jets, 2012 data
PNGpng nbjets_scaled_emu_2012.png r1 manage 19.1 K 2012-11-10 - 13:20 MonicaVazquezAcosta EMu: Number of b-jets, 2012 data
PDFpdf per_category.pdf r2 r1 manage 15.3 K 2012-11-09 - 21:53 MonicaVazquezAcosta MA-tanbeta 95%CL exclusion limit for b-tag/no-btag events
PNGpng per_category.png r3 r2 r1 manage 18.0 K 2012-11-09 - 21:54 MonicaVazquezAcosta MA-tanbeta 95%CL exclusion limit for b-tag/no-btag events
PDFpdf per_channel.pdf r3 r2 r1 manage 16.0 K 2012-11-09 - 21:54 MonicaVazquezAcosta MA-tanbeta 95%CL exclusion limit for different di-tau final states
PNGpng per_channel.png r2 r1 manage 20.5 K 2012-11-09 - 21:54 MonicaVazquezAcosta MA-tanbeta 95%CL exclusion limit for different di-tau final states
PDFpdf pzeta_btag_scaled_emu_2012.pdf r1 manage 16.2 K 2012-11-10 - 13:20 MonicaVazquezAcosta EMu: PZeta in btag category, 2012 data
PNGpng pzeta_btag_scaled_emu_2012.png r1 manage 18.2 K 2012-11-10 - 13:20 MonicaVazquezAcosta EMu: PZeta in btag category, 2012 data
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Topic revision: r11 - 2012-11-13 - MonicaVazquezAcosta
 
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