cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.73120.v1/t2
title: "Table 2" of "Measurement of the $t\bar{t}$ production cross-section using $e\mu$ events with b-tagged jets in pp collisions at $\sqrt{s}$=13 TeV with the ATLAS detector"

description: Measured fiducial cross-section for $t\bar{t}$ events producing an $e\mu$ pair, each lepton originating directly from t $\rightarrow$ W $\rightarrow$ l or via a leptonic $\tau$ decay t $\rightarrow$ W $\rightarrow$ $\tau$ $\rightarrow$ l and satisfying p$_{\mathrm{T}} &gt; $ 25 GeV and $|\eta| &lt;$ 2.5.
description: This paper describes a measurement of the inclusive top quark pair production cross-section ($\sigma_{t\bar{t}}$) with a data sample of 3.2 fb$^{-1}$ of proton--proton collisions at a centre-of-mass energy of $\sqrt{s}$=13 TeV, collected in 2015 by the ATLAS detector at the LHC. This measurement uses events with an opposite-charge electron--muon pair in the final state. Jets containing $b$-quarks are tagged using an algorithm based on track impact parameters and reconstructed secondary vertices. The numbers of events with exactly one and exactly two $b$-tagged jets are counted and used to determine simultaneously $\sigma_{t\bar{t}}$ and the efficiency to reconstruct and $b$-tag a jet from a top quark decay, thereby minimising the associated systematic uncertainties. The cross-section is measured to be: $\sigma_{t\bar{t}}$= 818 $\pm$ 8 (stat) $\pm$ 27 (syst) $\pm$ 19 (lumi) $\pm$ 12 (beam) pb, where the four uncertainties arise from data statistics, experimental and theoretical systematic effects, the integrated luminosity and the LHC beam energy, giving a total relative uncertainty of 4.4%. The result is consistent with theoretical QCD calculations at next-to-next-to-leading order. A fiducial measurement corresponding to the experimental acceptance of the leptons is also presented.
DOI: 10.17182/hepdata.73121.v1/t1
title: "Table 1" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Unfolded combined measurements of AFB in each M-|y| bin (mu+mu- and e+e- combined).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t2
title: "Table 2" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Unfolded measurement of AFB for the forward rapidity region (e+e-).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t3
title: "Table 3" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Unfolded measurements of AFB in each M-|y| bin (mu+mu-).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t4
title: "Table 4" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Unfolded measurements of AFB in each M-|y| bin (e+e-).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t5
title: "Table 5" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Covariance matrix of Drell-Yan AFB in muon channel for |y|&lt;1 for cos(theta)&lt;0 and cos(theta)&lt;0.
The covariance matrix is built in 2 dimensions, 14x14(mass) for cos(theta), --, -+, +-, ++ combination where + means positive cos(theta) and - implies the negative cos(theta).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t6
title: "Table 6" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Covariance matrix of Drell-Yan AFB in muon channel for |y|&lt;1 for cos(theta)&lt;0 and cos(theta)&gt;0.
The covariance matrix is built in 2 dimensions, 14x14(mass) for cos(theta), --, -+, +-, ++ combination where + means positive cos(theta) and - implies the negative cos(theta).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t7
title: "Table 7" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Covariance matrix of Drell-Yan AFB in muon channel for |y|&lt;1 for cos(theta)&gt;0 and cos(theta)&lt;0.
The covariance matrix is built in 2 dimensions, 14x14(mass) for cos(theta), --, -+, +-, ++ combination where + means positive cos(theta) and - implies the negative cos(theta).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t8
title: "Table 8" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Covariance matrix of Drell-Yan AFB in muon channel for |y|&lt;1 for cos(theta)&gt;0 and cos(theta)&gt;0.
The covariance matrix is built in 2 dimensions, 14x14(mass) for cos(theta), --, -+, +-, ++ combination where + means positive cos(theta) and - implies the negative cos(theta).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t9
title: "Table 9" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Covariance matrix of Drell-Yan AFB in muon channel for 1&lt;|y|&lt;1.25 for cos(theta)&lt;0 and cos(theta)&lt;0.
The covariance matrix is built in 2 dimensions, 14x14(mass) for cos(theta), --, -+, +-, ++ combination where + means positive cos(theta) and - implies the negative cos(theta).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t10
title: "Table 10" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Covariance matrix of Drell-Yan AFB in muon channel for 1&lt;|y|&lt;1.25 for cos(theta)&lt;0 and cos(theta)&gt;0.
The covariance matrix is built in 2 dimensions, 14x14(mass) for cos(theta), --, -+, +-, ++ combination where + means positive cos(theta) and - implies the negative cos(theta).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t11
title: "Table 11" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Covariance matrix of Drell-Yan AFB in muon channel for 1&lt;|y|&lt;1.25 for cos(theta)&gt;0 and cos(theta)&lt;0.
The covariance matrix is built in 2 dimensions, 14x14(mass) for cos(theta), --, -+, +-, ++ combination where + means positive cos(theta) and - implies the negative cos(theta).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t12
title: "Table 12" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Covariance matrix of Drell-Yan AFB in muon channel for 1&lt;|y|&lt;1.25 for cos(theta)&gt;0 and cos(theta)&gt;0.
The covariance matrix is built in 2 dimensions, 14x14(mass) for cos(theta), --, -+, +-, ++ combination where + means positive cos(theta) and - implies the negative cos(theta).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t13
title: "Table 13" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Covariance matrix of Drell-Yan AFB in muon channel for 1.25&lt;|y|&lt;1.5 for cos(theta)&lt;0 and cos(theta)&lt;0.
The covariance matrix is built in 2 dimensions, 14x14(mass) for cos(theta), --, -+, +-, ++ combination where + means positive cos(theta) and - implies the negative cos(theta).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t14
title: "Table 14" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Covariance matrix of Drell-Yan AFB in muon channel for 1.25&lt;|y|&lt;1.5 for cos(theta)&lt;0 and cos(theta)&gt;0.
The covariance matrix is built in 2 dimensions, 14x14(mass) for cos(theta), --, -+, +-, ++ combination where + means positive cos(theta) and - implies the negative cos(theta).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t15
title: "Table 15" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Covariance matrix of Drell-Yan AFB in muon channel for 1.25&lt;|y|&lt;1.5 for cos(theta)&gt;0 and cos(theta)&lt;0.
The covariance matrix is built in 2 dimensions, 14x14(mass) for cos(theta), --, -+, +-, ++ combination where + means positive cos(theta) and - implies the negative cos(theta).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t16
title: "Table 16" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Covariance matrix of Drell-Yan AFB in muon channel for 1.25&lt;|y|&lt;1.5 for cos(theta)&gt;0 and cos(theta)&gt;0.
The covariance matrix is built in 2 dimensions, 14x14(mass) for cos(theta), --, -+, +-, ++ combination where + means positive cos(theta) and - implies the negative cos(theta).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t17
title: "Table 17" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Covariance matrix of Drell-Yan AFB in muon channel for 1.5&lt;|y|&lt;2.4 for cos(theta)&lt;0 and cos(theta)&lt;0.
The covariance matrix is built in 2 dimensions, 14x14(mass) for cos(theta), --, -+, +-, ++ combination where + means positive cos(theta) and - implies the negative cos(theta).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t18
title: "Table 18" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Covariance matrix of Drell-Yan AFB in muon channel for 1.5&lt;|y|&lt;2.4 for cos(theta)&lt;0 and cos(theta)&gt;0.
The covariance matrix is built in 2 dimensions, 14x14(mass) for cos(theta), --, -+, +-, ++ combination where + means positive cos(theta) and - implies the negative cos(theta).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t19
title: "Table 19" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Covariance matrix of Drell-Yan AFB in muon channel for 1.5&lt;|y|&lt;2.4 for cos(theta)&gt;0 and cos(theta)&lt;0.
The covariance matrix is built in 2 dimensions, 14x14(mass) for cos(theta), --, -+, +-, ++ combination where + means positive cos(theta) and - implies the negative cos(theta).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t20
title: "Table 20" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Covariance matrix of Drell-Yan AFB in muon channel for 1.5&lt;|y|&lt;2.4 for cos(theta)&gt;0 and cos(theta)&gt;0.
The covariance matrix is built in 2 dimensions, 14x14(mass) for cos(theta), --, -+, +-, ++ combination where + means positive cos(theta) and - implies the negative cos(theta).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t21
title: "Table 21" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Covariance matrix of Drell-Yan AFB in electron channel for |y|&lt;1 for cos(theta)&lt;0 and cos(theta)&lt;0.
The covariance matrix is built in 2 dimensions, 14x14(mass) for cos(theta), --, -+, +-, ++ combination where + means positive cos(theta) and - implies the negative cos(theta).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t22
title: "Table 22" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Covariance matrix of Drell-Yan AFB in electron channel for |y|&lt;1 for cos(theta)&lt;0 and cos(theta)&gt;0.
The covariance matrix is built in 2 dimensions, 14x14(mass) for cos(theta), --, -+, +-, ++ combination where + means positive cos(theta) and - implies the negative cos(theta).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t23
title: "Table 23" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Covariance matrix of Drell-Yan AFB in electron channel for |y|&lt;1 for cos(theta)&gt;0 and cos(theta)&lt;0.
The covariance matrix is built in 2 dimensions, 14x14(mass) for cos(theta), --, -+, +-, ++ combination where + means positive cos(theta) and - implies the negative cos(theta).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.
DOI: 10.17182/hepdata.73121.v1/t24
title: "Table 24" of "Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at sqrt(s) = 8 TeV"

description: Covariance matrix of Drell-Yan AFB in electron channel for |y|&lt;1 for cos(theta)&gt;0 and cos(theta)&gt;0.
The covariance matrix is built in 2 dimensions, 14x14(mass) for cos(theta), --, -+, +-, ++ combination where + means positive cos(theta) and - implies the negative cos(theta).
description: CERN-LHC. A measurement of the forward-backward asymmetry AFB of oppositely charged lepton pairs
(mumu and ee) produced via Z/gamma* boson exchange in pp collisions at sqrt(s) = 8 TeV is presented.
The data sample corresponds to an integrated luminosity of 19.7 fb^{-1} collected with the CMS detector at the LHC.
The combined results for muon and electron channel up to |y|=2.4 are presented with Afb in each channel.
The covariant matrices for each muon and electron channel are also presented.