W and Z production in pp collisions at 7 TeV with the ATLAS experimant at the LHC

Verena Ingrid Martinez Outschoorn

W and Z production in pp collisions at 7 TeV with the ATLAS experimant at the LHC

Verena Ingrid Martinez Outschoorn

Physics

Research output: Contribution to conference › Paper › peer-review

Abstract

The observation of W and Z bosons and a measurement of the production cross sections in proton proton collisions at E_CM = 7 TeV are presented using data from the ATLAS experiment at the LHC. Results are based on 118 W→lv and 125 Z/γ^*→ll (5 =e,μ) candidate events corresponding to an integrated luminosity of about 17 nb and 22 nb respectively. The measured values of o_W x BR(W→lv) = 9.3 ± 0.9 (stat) ± 0.6 (syst) ± 1.0 (lumi) nb and σ_Z/γ* x BR(Z/γ^*→ll, 66≤m_a≤116) = 0.83 ± 0.07 (stat) ± 0.06 (syst) ± 0.09 (lumi) nb. A measurement of the W lepton charge asymmetry is also reported. A comparison with theoretical predictions based on NNLO QCD calculations shows agreement with the measurements.

Original language	English (US)
State	Published - 2010
Event	30th Physics in Collision Symposium, PIC 2010 - Karlsruhe, Germany Duration: Sep 1 2010 → Sep 4 2010

Other

Other	30th Physics in Collision Symposium, PIC 2010
Country/Territory	Germany
City	Karlsruhe
Period	9/1/10 → 9/4/10

ASJC Scopus subject areas

Nuclear and High Energy Physics

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title = "W and Z production in pp collisions at 7 TeV with the ATLAS experimant at the LHC",

abstract = "The observation of W and Z bosons and a measurement of the production cross sections in proton proton collisions at ECM = 7 TeV are presented using data from the ATLAS experiment at the LHC. Results are based on 118 W→lv and 125 Z/γ*→ll (5 =e,μ) candidate events corresponding to an integrated luminosity of about 17 nb and 22 nb respectively. The measured values of oW x BR(W→lv) = 9.3 ± 0.9 (stat) ± 0.6 (syst) ± 1.0 (lumi) nb and σZ/γ* x BR(Z/γ*→ll, 66≤ma≤116) = 0.83 ± 0.07 (stat) ± 0.06 (syst) ± 0.09 (lumi) nb. A measurement of the W lepton charge asymmetry is also reported. A comparison with theoretical predictions based on NNLO QCD calculations shows agreement with the measurements.",

author = "{Martinez Outschoorn}, {Verena Ingrid}",

year = "2010",

language = "English (US)",

note = "30th Physics in Collision Symposium, PIC 2010 ; Conference date: 01-09-2010 Through 04-09-2010",

}

TY - CONF

T1 - W and Z production in pp collisions at 7 TeV with the ATLAS experimant at the LHC

AU - Martinez Outschoorn, Verena Ingrid

PY - 2010

Y1 - 2010

N2 - The observation of W and Z bosons and a measurement of the production cross sections in proton proton collisions at ECM = 7 TeV are presented using data from the ATLAS experiment at the LHC. Results are based on 118 W→lv and 125 Z/γ*→ll (5 =e,μ) candidate events corresponding to an integrated luminosity of about 17 nb and 22 nb respectively. The measured values of oW x BR(W→lv) = 9.3 ± 0.9 (stat) ± 0.6 (syst) ± 1.0 (lumi) nb and σZ/γ* x BR(Z/γ*→ll, 66≤ma≤116) = 0.83 ± 0.07 (stat) ± 0.06 (syst) ± 0.09 (lumi) nb. A measurement of the W lepton charge asymmetry is also reported. A comparison with theoretical predictions based on NNLO QCD calculations shows agreement with the measurements.

AB - The observation of W and Z bosons and a measurement of the production cross sections in proton proton collisions at ECM = 7 TeV are presented using data from the ATLAS experiment at the LHC. Results are based on 118 W→lv and 125 Z/γ*→ll (5 =e,μ) candidate events corresponding to an integrated luminosity of about 17 nb and 22 nb respectively. The measured values of oW x BR(W→lv) = 9.3 ± 0.9 (stat) ± 0.6 (syst) ± 1.0 (lumi) nb and σZ/γ* x BR(Z/γ*→ll, 66≤ma≤116) = 0.83 ± 0.07 (stat) ± 0.06 (syst) ± 0.09 (lumi) nb. A measurement of the W lepton charge asymmetry is also reported. A comparison with theoretical predictions based on NNLO QCD calculations shows agreement with the measurements.

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M3 - Paper

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T2 - 30th Physics in Collision Symposium, PIC 2010

Y2 - 1 September 2010 through 4 September 2010

ER -

W and Z production in pp collisions at 7 TeV with the ATLAS experimant at the LHC

Abstract

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