Search for a Standard Model Higgs boson in the decay channel H to ZZ(∗) to 4l

This is a condensed description with plots and additional supporting material for the analysis described in the CMS Physics Analysis Summary (PAS) paper: CMS-HIG-11-015

The analysis which was used for a previous CMS public release in the CMS-HIG-11-004 PAS presented on Hig11004TWiki is repeated here with a higher integrated luminosity of 1.66 fb-1. The results presented here updates and replaces those previous results.

Abstract

A search for a Higgs boson in the decay channel H → ZZ(∗) with each Z boson decaying to an electron or muon pair is presented using pp collisions from the LHC at sqrt(s)= 7 TeV. The data analyzed correspond to an integrated luminosity of 1.66 ± 0.07 fb−1 recorded by the CMS detector in 2010 and 2011. The search covers Higgs boson mass (mH) hypotheses of 110 < mH < 600 GeV/c2 with an expected sensitivity varying between one and five times the standard model cross section at 95% CL over most of the mass range. Twenty one events are observed, while 21.2 ± 0.8 events are expected from standard model background processes. Six of the events are below the kinematic threshold of two on-shell Z's (m_H < 180 GeV/c2), while 2.8 ± 0.2 background events are expected. The events are not clustered in mass excluding interpretation as the standard model Higgs boson. The distribution of events is consistent with the expectation of standard model continuum production of ZZ(∗) pairs and the production cross section for 60 < mZ < 120 GeV/c2 is measured to be in agreement with the predicted value. Upper limits at 95% CL on the cross section×branching ratio for a Higgs boson with standard model-like decays exclude cross sections from about one to two times the expected standard model cross section for masses in the range 150 < mH < 420 GeV/c2. Reinterpreted in the context of the standard model with four fermion families a Higgs boson with a mass in the range 120-520 GeV/c2 is excluded at 95% CL.

Main Results

Simple sequential sets of lepton reconstruction, identification and isolation cuts and a set of kinematic cuts have been introduced to define a common baseline for the search at any Higgs boson mass mH in the range 100 < mH < 600 GeV/c2. The instrumental background from Z+jets and the reducible backgrounds from Zb\bar{b} and t\bar{t}, with misidentified primary leptons, are shown to be negligible over most of the mass, with a small contamination remaining at low mass.

Twenty one events are observed in the 2e2mu, 4e and 4mu channels for an integrated luminosity of 1.66 ± 0.07 fb−1, while 21.2 ± 0.8 events are expected from standard model background processes. The distribution of events is compatible with the expectation from the standard model continuum production of Z boson pairs from q\bar{q} annihilation and gg fusion. No clustering of events is observed in the measured m4l mass spectrum. Six of the events are below the kinematic threshold of two on-shell Z's, while 2.8 ± 0.2 background events are expected. The probability that the background fluctuates to the observed number if events is 6.5%. Using the high-mass selection which contains eight events, a total cross section for a pair of Z bosons in the mass range 60 < m_Z < 120 GeV/c2 has been measured to be in agreement with the predicted value.

Upper limits obtained at 95% CL on the cross section×branching ratio for a Higgs boson with standard model-like decays exclude cross sections from about one to two times the expected standard model cross section for masses in the range 150 < mH < 420 GeV/c2. Upper limits obtained in the context the standard model with a fourth fermion generation, exclude a Higgs boson with a mass in the ranges 120 - 520 GeV/c2 at 95% CL.

Figures from HIG-11-004

Figure Label Description
Figure 5 a) pdf, eps, png The mean expected and the observed upper limits at 95% C.L. on σ(pp → H + X) × B(ZZ → 4l) for a Higgs boson in the mass range 120-600 GeV/c2, for an integrated luminosity of 1.13 fb−1 using the CLs approach. The expected ratios for the SM is presented. The results are obtained using a shape analysis method.

Figure 5 b)pdf, eps, png The mean expected and the observed upper limits at 95% C.L. on σ(pp → H + X) × B(ZZ → 4l) for a Higgs boson in the mass range 120-600 GeV/c2, for an integrated luminosity of 1.13 fb−1 using the CLs approach. The expected ratios for the SM with a fourth-fermion family (SM4) is presented. The results are obtained using a shape analysis method.

Figure 3 d) pdf,eps,png Distribution of the four-lepton reconstructed mass for the baseline selection in the sum of the 4l channels. Points represent the data, shaded histograms represent the signal and background expectations. The samples correspond to an integrated luminosity of L = 1.66 fb−1

Figure 4 pdf,eps,png Distribution of the four-lepton reconstructed mass for the sum of the 4l channels in the high-mass selection. Points represent the data, shaded histograms represent the signal and background expectations. The samples correspond to an integrated luminosity of L = 1.66 fb−1.

Figure 3 a) pdf,eps,png Distribution of the four-lepton reconstructed mass for the baseline selection in the 4e channel. Points represent the data, shaded histograms represent the signal and background expectations. The samples correspond to an integrated luminosity of L = 1.66 fb−1

Figure 3 b) pdf,eps,png Distribution of the four-lepton reconstructed mass for the baseline selection in the 4mu channel. Points represent the data, shaded histograms represent the signal and background expectations. The samples correspond to an integrated luminosity of L = 1.66 fb−1

Figure 3 c) pdf,eps,png Distribution of the four-lepton reconstructed mass for the baseline selection in the 2e2mu channel. Points represent the data, shaded histograms represent the signal and background expectations. The samples correspond to an integrated luminosity of L = 1.66 fb−1

Figure 2 pdf,eps,png Distribution of the best reconstructed Z candidate invariant mass for the events in the four-lepton background control region defined by a pair of identified leptons with opposite charge and matching flavour and another pair of leptons with isolation cut relaxed, flavour and charge requirements removed and large impact parameters. Solid points represent the data, shaded histograms represent the MC expectations, the signal and the ZZ background contribute negligibly. The samples correspond to an integrated luminosity of L = 1.66 fb−1

Figure 6 a) pdf,eps,png Event yields in the 4e channel as a function of the event selection steps. Black points with uncertainties represent the data, other symbols represent the MC expectations The samples correspond to an integrated luminosity of L = 1.66 fb−1

Figure 6 b) pdf,eps,png Event yields in the 4mu channel as a function of the event selection steps. Black points with uncertainties represent the data, other symbols represent the MC expectations The samples correspond to an integrated luminosity of L = 1.66 fb−1

Figure 6 c) pdf,eps,png Event yields in the 2e2mu channel as a function of the event selection steps. Black points with uncertainties represent the data, other symbols represent the MC expectations The samples correspond to an integrated luminosity of L = 1.66 fb−1

Figure 1 a) pdf,eps,png Comparison between data and MC at an early stage of the event selection where the four lepton combination is chosen, and the lepton pairs are assigned to the Z1 and Z2 bosons. The full selection requirements are applied to the leptons assigned to the Z1. The plots show from left to right the reconstructed mass mZ1, the reconstructed mass mZ2 and the reconstructed four-lepton invariant mass for the 4e channel. Points with statistical uncertainties represent the data. Shaded histograms represent the MC expectations. The samples correspond to an integrated luminosity of L = 1.66 fb−1

Figure 1 b) pdf,eps,png Comparison between data and MC at an early stage of the event selection where the four lepton combination is chosen, and the lepton pairs are assigned to the Z1 and Z2 bosons. The full selection requirements are applied to the leptons assigned to the Z1. The plots show from left to right the reconstructed mass mZ1, the reconstructed mass mZ2 and the reconstructed four-lepton invariant mass for the 4mu channel. Points with statistical uncertainties represent the data. Shaded histograms represent the MC expectations. The samples correspond to an integrated luminosity of L = 1.66 fb−1

Figure 1 c) pdf,eps,png Comparison between data and MC at an early stage of the event selection where the four lepton combination is chosen, and the lepton pairs are assigned to the Z1 and Z2 bosons. The full selection requirements are applied to the leptons assigned to the Z1. The plots show from left to right the reconstructed mass mZ1, the reconstructed mass mZ2 and the reconstructed four-lepton invariant mass for the 2e2mu channel. Points with statistical uncertainties represent the data. Shaded histograms represent the MC expectations. The samples correspond to an integrated luminosity of L = 1.66 fb−1

Table 1 pdf, eps, png Event yields in the (a) 4e, (b) 4mu and (c) 2e2mu channel for the trigger and the seven event selection steps (see text) with steps three and four regrouped as "4l" for the choice of the best four leptons. The samples correspond to an integrated luminosity of L = 1.66 fb−1

Table 2 pdf, eps, png Number of ZZ background events and relative uncertainties in the signal region in a mass range from 100 to 600 GeV/c2, estimated from normalization to the measured Z rate and from Monte Carlo simulation, for baseline and high-mass event selections.

Table 3 pdf, eps, png Number of background events and relative uncertainties for baseline and high-mass event selections in the signal region in a m4l range from 100 to 600 GeV/c2, estimated from data as described in the text. Upper three rows: tt and Z bb /cc estimated from the control region with inverted SIP3D, relaxed isolation, charge and flavour requirements for two leptons. Lower three rows: Z+jets estimated from the control region with relaxed isolation and identification requirements for two leptons.

Table 4 pdf, eps, png Summary of the magnitude of systematic uncertainties in percent. The uncertainties assigned for the lepton reconstruction, identification and isolation apply to the event yields. The uncertainty assigned to the electron energy scale is further propagated through the shape of the expected signal and background reconstructed mass distributions.

Table 5 pdf, eps, png Number of events observed, background and signal rates for each final state in a mass range from m1 = 100 GeV/c2 to m2 = 600 GeV/c2 both for the baseline and high-massselections. For ZZ, Z+jets, tt and Zbb /cc the data driven estimations are used, for WZ the Monte Carlo estimation is used.

Table 6 pdf, eps, png Properties of the four-lepton combinations satisfying the baseline selection for the Higgs boson search.

Additional Figures

Figure Label Description
pdf, eps, png The mean expected and the observed upper limits at 95% C.L. on σ(pp → H + X) × B(ZZ → 4l) for a Higgs boson in the mass range 120-600 GeV/c2, for an integrated luminosity of 1.13 fb−1 using the CLs approach. The results are obtained using a shape analysis method.

pdf, eps, png The mean expected and the observed upper limits at 95% C.L. on σ(pp → H + X) × B(ZZ → 4l) for a Higgs boson in the mass range 110-200 GeV/c2, for an integrated luminosity of 1.16 fb−1 using the CLs approach. The results are obtained using a shape analysis method.

pdf, eps, png Comparison between data and MC for the reconstructed mass mZ1. The full set of selection requirements is applied to the leptons of the pair assigned to the Z1 boson and the other pair of leptons is left entirely opened, i.e. no flavour or charge requirements and no vertex or isolation constraints is applied to the pair of leptons assigned to the Z2 boson. The samples correspond to an integrated luminosity of L = 1.66 fb−1

pdf, eps, png Comparison between data and MC for the reconstructed mass mZ1. The full set of selection requirements is applied to the leptons of the pair assigned to the Z1 boson and the other pair of leptons is left entirely opened, i.e. no flavour or charge requirements and no vertex or isolation constraints is applied to the pair of leptons assigned to the Z2 boson. The samples correspond to an integrated luminosity of L = 1.66 fb−1

pdf, eps, png Comparison between data and MC for the reconstructed four-lepton invariant mass. The full set of selection requirements is applied to the leptons of the pair assigned to the Z1 boson and the other pair of leptons is left entirely opened, i.e. no flavour or charge requirements and no vertex or isolation constraints is applied to the pair of leptons assigned to the Z2 boson. The samples correspond to an integrated luminosity of L = 1.66 fb−1

pdf, eps, png Comparison between data and MC for the impact parameter significance lowest SIP3D between the additional leptons in a Z1+2l sample. The full set of selection requirements is applied to the leptons of the pair assigned to the Z1 boson and the other pair of leptons is left entirely opened, i.e. no flavour or charge requirements and no vertex or isolation constraints is applied to the pair of leptons assigned to the Z2 boson. The samples correspond to an integrated luminosity of L = 1.66 fb−1

pdf, eps, png Comparison between data and MC for the impact parameter significance highest SIP3D between the additional leptons in a Z1+2l sample. The full set of selection requirements is applied to the leptons of the pair assigned to the Z1 boson and the other pair of leptons is left entirely opened, i.e. no flavour or charge requirements and no vertex or isolation constraints is applied to the pair of leptons assigned to the Z2 boson. The samples correspond to an integrated luminosity of L = 1.66 fb−1

pdf, eps, png Comparison between data and MC for the sum of the combined relative isolation for the additional leptons in a Z1+2l sample. The full set of selection requirements is applied to the leptons of the pair assigned to the Z1 boson and the other pair of leptons is left entirely opened, i.e. no flavour or charge requirements and no vertex or isolation constraints is applied to the pair of leptons assigned to the Z2 boson. The samples correspond to an integrated luminosity of L = 1.66 fb−1

pdf,eps,png Distribution of the best reconstructed Z candidate invariant mass for the events in the four-lepton background control region defined by a pair of identified leptons with opposite charge and matching flavour and another pair of leptons with isolation cut relaxed, flavour and charge requirements removed and large impact parameters. Additional requirements on the invariant masses as defined in the ”best 4l candidate” step of the preselection. Solid points represent the data, shaded histograms represent the MC expectations, the signal and the ZZ background contribute negligibly. The samples correspond to an integrated luminosity of L = 1.66 fb−1

Event Displays

Figure Label Description
png, pdf Candidate C 2e2u
png, pdf Candidate D 4e
png, pdf Candidate F 4u
Topic attachments
I Attachment History Action Size Date Who Comment
Unknown file formateps 2mu2eMass_Low_lin.eps r1 manage 21.2 K 2011-08-19 - 16:13 RobertoSalerno  
PDFpdf 2mu2eMass_Low_lin.pdf r1 manage 5.6 K 2011-08-19 - 16:12 RobertoSalerno  
PNGpng 2mu2eMass_Low_lin.png r1 manage 14.7 K 2011-08-19 - 15:41 RobertoSalerno  
Unknown file formateps 2mu2e_Mass_Preselection_lin.eps r1 manage 72.3 K 2011-08-19 - 15:03 RobertoSalerno  
PDFpdf 2mu2e_Mass_Preselection_lin.pdf r1 manage 14.2 K 2011-08-19 - 15:03 RobertoSalerno  
PNGpng 2mu2e_Mass_Preselection_lin.png r1 manage 21.9 K 2011-08-19 - 15:03 RobertoSalerno  
PNGpng 2mu2e_StepPlot.png r1 manage 17.9 K 2011-08-19 - 15:27 RobertoSalerno  
Unknown file formateps 4eMass_Low_lin.eps r1 manage 20.6 K 2011-08-19 - 15:24 RobertoSalerno  
PDFpdf 4eMass_Low_lin.pdf r1 manage 5.2 K 2011-08-19 - 15:25 RobertoSalerno  
PNGpng 4eMass_Low_lin.png r1 manage 14.4 K 2011-08-19 - 15:25 RobertoSalerno  
Unknown file formateps 4e_Mass_Preselection_lin.eps r1 manage 62.9 K 2011-08-19 - 14:44 RobertoSalerno  
PDFpdf 4e_Mass_Preselection_lin.pdf r1 manage 12.7 K 2011-08-19 - 14:44 RobertoSalerno  
PNGpng 4e_Mass_Preselection_lin.png r1 manage 20.6 K 2011-08-19 - 14:39 RobertoSalerno  
Unknown file formateps 4e_StepPlot.eps r1 manage 15.2 K 2011-08-19 - 16:11 RobertoSalerno  
PDFpdf 4e_StepPlot.pdf r1 manage 7.5 K 2011-08-19 - 16:11 RobertoSalerno  
PNGpng 4e_StepPlot.png r1 manage 17.8 K 2011-08-19 - 16:11 RobertoSalerno  
Unknown file formateps 4muMass_Low_lin.eps r1 manage 20.5 K 2011-08-19 - 15:26 RobertoSalerno  
PDFpdf 4muMass_Low_lin.pdf r1 manage 5.6 K 2011-08-19 - 15:26 RobertoSalerno  
PNGpng 4muMass_Low_lin.png r1 manage 14.5 K 2011-08-19 - 15:51 RobertoSalerno  
Unknown file formateps 4mu_Mass_Preselection_lin.eps r1 manage 66.6 K 2011-08-19 - 14:44 RobertoSalerno  
PDFpdf 4mu_Mass_Preselection_lin.pdf r1 manage 13.7 K 2011-08-19 - 14:43 RobertoSalerno  
PNGpng 4mu_Mass_Preselection_lin.png r1 manage 20.8 K 2011-08-19 - 14:47 RobertoSalerno  
Unknown file formateps 4mu_StepPlot.eps r1 manage 15.2 K 2011-08-19 - 16:12 RobertoSalerno  
PDFpdf 4mu_StepPlot.pdf r1 manage 7.5 K 2011-08-19 - 16:12 RobertoSalerno  
PNGpng 4mu_StepPlot.png r1 manage 17.9 K 2011-08-19 - 15:41 RobertoSalerno  
PDFpdf CandC_2e2u.pdf r1 manage 268.6 K 2011-08-20 - 16:27 RobertoSalerno  
PNGpng CandC_2e2u.png r1 manage 593.1 K 2011-08-20 - 16:27 RobertoSalerno  
PDFpdf CandD_4e.pdf r1 manage 414.8 K 2011-08-20 - 16:28 RobertoSalerno  
PNGpng CandD_4e.png r1 manage 788.7 K 2011-08-20 - 16:28 RobertoSalerno  
PDFpdf CandF_4u.pdf r1 manage 314.5 K 2011-08-20 - 16:29 RobertoSalerno  
PNGpng CandF_4u.png r1 manage 518.9 K 2011-08-20 - 16:29 RobertoSalerno  
Unknown file formateps ClsLimitSM4_1.66fb.eps r1 manage 21.2 K 2011-08-19 - 16:07 RobertoSalerno  
PDFpdf ClsLimitSM4_1.66fb.pdf r1 manage 14.7 K 2011-08-19 - 16:05 RobertoSalerno  
PNGpng ClsLimitSM4_1.66fb.png r1 manage 24.4 K 2011-08-19 - 16:06 RobertoSalerno  
Unknown file formateps ClsLimitXSBR_1.66fb.eps r1 manage 29.8 K 2011-08-19 - 18:54 RobertoSalerno  
PDFpdf ClsLimitXSBR_1.66fb.pdf r1 manage 44.2 K 2011-08-19 - 18:54 RobertoSalerno  
PNGpng ClsLimitXSBR_1.66fb.png r1 manage 210.8 K 2011-08-19 - 18:54 RobertoSalerno  
Unknown file formateps ClsLimit_1.66fb.eps r1 manage 18.0 K 2011-08-19 - 16:06 RobertoSalerno  
PDFpdf ClsLimit_1.66fb.pdf r1 manage 37.4 K 2011-08-19 - 16:06 RobertoSalerno  
PNGpng ClsLimit_1.66fb.png r1 manage 153.3 K 2011-08-19 - 16:06 RobertoSalerno  
Unknown file formateps ClsLimit_1.66fb_zoom.eps r1 manage 17.7 K 2011-08-19 - 18:56 RobertoSalerno  
PDFpdf ClsLimit_1.66fb_zoom.pdf r1 manage 36.4 K 2011-08-19 - 18:55 RobertoSalerno  
PNGpng ClsLimit_1.66fb_zoom.png r1 manage 142.5 K 2011-08-19 - 19:05 RobertoSalerno  
PDFpdf Table1.pdf r1 manage 131.1 K 2011-08-19 - 17:55 RobertoSalerno  
PNGpng Table1.png r1 manage 98.1 K 2011-08-19 - 17:56 RobertoSalerno  
PDFpdf Table2.pdf r1 manage 124.4 K 2011-08-19 - 17:56 RobertoSalerno  
PNGpng Table2.png r1 manage 37.5 K 2011-08-19 - 17:56 RobertoSalerno  
PDFpdf Table3.pdf r1 manage 84.7 K 2011-08-19 - 17:57 RobertoSalerno  
PNGpng Table3.png r1 manage 26.9 K 2011-08-19 - 17:57 RobertoSalerno  
PDFpdf Table4.pdf r1 manage 84.7 K 2011-08-19 - 18:39 RobertoSalerno  
PNGpng Table4.png r1 manage 18.8 K 2011-08-19 - 18:39 RobertoSalerno  
PDFpdf Table5.pdf r1 manage 101.0 K 2011-08-19 - 18:39 RobertoSalerno  
PNGpng Table5.png r1 manage 90.5 K 2011-08-19 - 18:40 RobertoSalerno  
PDFpdf Table6.pdf r1 manage 101.0 K 2011-08-19 - 18:40 RobertoSalerno  
PNGpng Table6.png r1 manage 119.1 K 2011-08-19 - 18:40 RobertoSalerno  
Unknown file formateps all_Mass_High_lin.eps r1 manage 21.3 K 2011-08-19 - 15:52 RobertoSalerno  
PDFpdf all_Mass_High_lin.pdf r1 manage 5.6 K 2011-08-19 - 15:52 RobertoSalerno  
PNGpng all_Mass_High_lin.png r1 manage 14.9 K 2011-08-19 - 15:52 RobertoSalerno  
Unknown file formateps all_Mass_Low_lin.eps r1 manage 22.6 K 2011-08-19 - 15:53 RobertoSalerno  
PDFpdf all_Mass_Low_lin.pdf r1 manage 6.1 K 2011-08-19 - 15:53 RobertoSalerno  
PNGpng all_Mass_Low_lin.png r1 manage 15.2 K 2011-08-19 - 15:53 RobertoSalerno  
Unknown file formateps hAddLeptTightIsoZ_hIsoSum2_masses3.eps r1 manage 34.0 K 2011-08-19 - 18:56 RobertoSalerno  
PDFpdf hAddLeptTightIsoZ_hIsoSum2_masses3.pdf r1 manage 9.2 K 2011-08-19 - 18:56 RobertoSalerno  
PNGpng hAddLeptTightIsoZ_hIsoSum2_masses3.png r1 manage 16.2 K 2011-08-19 - 18:57 RobertoSalerno  
Unknown file formateps hAddLeptTightIsoZ_hSIPa_masses3.eps r1 manage 24.6 K 2011-08-19 - 18:57 RobertoSalerno  
PDFpdf hAddLeptTightIsoZ_hSIPa_masses3.pdf r1 manage 6.2 K 2011-08-19 - 18:57 RobertoSalerno  
PNGpng hAddLeptTightIsoZ_hSIPa_masses3.png r1 manage 16.1 K 2011-08-19 - 18:58 RobertoSalerno  
Unknown file formateps hAddLeptTightIsoZ_hSIPb_masses3.eps r1 manage 27.0 K 2011-08-19 - 18:58 RobertoSalerno  
PDFpdf hAddLeptTightIsoZ_hSIPb_masses3.pdf r1 manage 7.2 K 2011-08-19 - 18:58 RobertoSalerno  
PNGpng hAddLeptTightIsoZ_hSIPb_masses3.png r1 manage 16.3 K 2011-08-19 - 18:59 RobertoSalerno  
Unknown file formateps hAddLeptTightIsoZ_hZ1CRllMassZ212M100otherZM12.eps r1 manage 21.7 K 2011-08-19 - 19:05 RobertoSalerno  
PDFpdf hAddLeptTightIsoZ_hZ1CRllMassZ212M100otherZM12.pdf r1 manage 5.8 K 2011-08-19 - 19:05 RobertoSalerno  
PNGpng hAddLeptTightIsoZ_hZ1CRllMassZ212M100otherZM12.png r1 manage 14.8 K 2011-08-19 - 19:06 RobertoSalerno  
Unknown file formateps hAddLeptTightIsoZ_hZ1ll_masses3.eps r1 manage 27.2 K 2011-08-19 - 18:59 RobertoSalerno  
PDFpdf hAddLeptTightIsoZ_hZ1ll_masses3.pdf r1 manage 7.6 K 2011-08-19 - 18:59 RobertoSalerno  
PNGpng hAddLeptTightIsoZ_hZ1ll_masses3.png r1 manage 17.2 K 2011-08-19 - 19:00 RobertoSalerno  
Unknown file formateps hAddLeptTightIsoZ_hZ2llMass_masses3.eps r1 manage 34.5 K 2011-08-19 - 19:00 RobertoSalerno  
PDFpdf hAddLeptTightIsoZ_hZ2llMass_masses3.pdf r1 manage 9.4 K 2011-08-19 - 19:00 RobertoSalerno  
PNGpng hAddLeptTightIsoZ_hZ2llMass_masses3.png r1 manage 18.3 K 2011-08-19 - 19:00 RobertoSalerno  
Unknown file formateps hAddLeptTightIsoZ_hZZll_masses3.eps r1 manage 26.4 K 2011-08-19 - 19:01 RobertoSalerno  
PDFpdf hAddLeptTightIsoZ_hZZll_masses3.pdf r1 manage 6.9 K 2011-08-19 - 19:01 RobertoSalerno  
PNGpng hAddLeptTightIsoZ_hZZll_masses3.png r1 manage 16.9 K 2011-08-19 - 19:11 RobertoSalerno  
Unknown file formateps hzLL_quadlepZbb.eps r1 manage 22.8 K 2011-08-19 - 15:16 RobertoSalerno  
PDFpdf hzLL_quadlepZbb.pdf r1 manage 6.2 K 2011-08-19 - 15:17 RobertoSalerno  
PNGpng hzLL_quadlepZbb.png r1 manage 15.7 K 2011-08-19 - 15:17 RobertoSalerno  
Edit | Attach | Watch | Print version | History: r6 < r5 < r4 < r3 < r2 | Backlinks | Raw View | WYSIWYG | More topic actions
Topic revision: r6 - 2011-09-20 - RobertoSalerno
 
    • Cern Search Icon Cern Search
    • TWiki Search Icon TWiki Search
    • Google Search Icon Google Search

    CMSPublic All webs login

This site is powered by the TWiki collaboration platform Powered by PerlCopyright &© 2008-2021 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
or Ideas, requests, problems regarding TWiki? use Discourse or Send feedback