Measurement of the forward-backward asymmetry of electron and muon pair-production in pp collisions at root s=7 TeV with the ATLAS detector

Aad, G.; Agatonović-Jovin, Tatjana; Božović-Jelisavčić, Ivanka; Ćirković, Predrag; Dimitrievska, A.; Krstić, Jelena; Mamužić, Judita; Marjanovic, M.; Popovic, D. S.; Sijacki, Dj.; Simic, Lj.; Vranjes, N.; Vranješ Milosavljević, Marija

doi:10.1007/JHEP09(2015)049

2015

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Abstract

This paper presents measurements from the ATLAS experiment of the forward-backward asymmetry in the reaction pp - GT Z/gamma* - GT l(+)l(-), with l being electrons or muons, and the extraction of the effective weak mixing angle. The results are based on the full set of data collected in 2011 in pp collisions at the LHC at root s = 7 TeV, corresponding to an integrated luminosity of 4.8 fb(-1). The measured asymmetry values are found to be in agreement with the corresponding Standard Model predictions. The combination of the muon and electron channels yields a value of the effective weak mixing angle of sin(2) theta(lept)(eff) = 0.2308 +/- 0.0005(stat.)+/- 0.0006(syst.)+/- 0.0009(PDF), where the first uncertainty corresponds to data statistics, the second to s ystematic effects and the third to knowledge of the parton density functions. This result agrees with the current world average from the Particle Data Group fit.

Keywords:

Hadron-Hadron Scattering

Source:
Journal of High Energy Physics, 2015, 9

Projects:

ANPCyT, Argentina, YerPhI, Armenia, ARC, Australia, BMWFW, Austria, FWF, Austria, ANAS, Azerbaijan, SSTC, Belarus, CNPq, Brazil, FAPESP, Brazil, NSERC, Canada, NRC, Canada, CFI, Canada, CERN, CONICYT, Chile, CAS, China, MOST, China, NSFC, China, COLCIENCIAS, Colombia, MSMT CR, Czech Republic, MPO CR, Czech Republic, VSC CR, Czech Republic, DNRF, Denmark, DNSRC, Denmark, Lundbeck Foundation, Denmark, EPLANET, ERC, NSRF, European Union, IN2P3-CNRS, France, CEA-DSM/IRFU, France, GNSF, Georgia, BMBF, Germany, DFG, Germany, HGF, Germany, MPG, Germany, AvH Foundation, Germany, GSRT, Greece, NSRF, Greece, RGC, China, Hong Kong SAR, China, ISF, Israel, MINERVA, Israel, GIF, Israel, I-CORE, Israel, Benoziyo Center, Israel, INFN, Italy, MEXT, Japan, JSPS, Japan, CNRST, Morocco, FOM, Netherlands, NWO, Netherlands, BRF, Norway, RCN, Norway, MNiSW, Poland, NCN, Poland, GRICES, Portugal, FCT, Portugal, MNE/IFA, Romania, MES of Russia, Russian Federation, NRC KI, Russian Federation, JINR, MSTD, Serbia, MSSR, Slovakia, ARRS, Slovenia, MIZS, Slovenia, DST/NRF, South Africa, MINECO, Spain, SRC, Sweden, Wallenberg Foundation, Sweden, SER, Switzerland, SNSF, Switzerland, Canton of Bern, Switzerland, Canton of Geneva, Switzerland, NSC, Taiwan, TAEK, Turkey, STFC, Royal Society and Leverhulme Trust, United Kingdom, DOE, United States of America, NSF, United States of America, ICREA

DOI: 10.1007/JHEP09(2015)049

ISSN: 1029-8479

WoS: 000363537800001

Scopus: 2-s2.0-84942320141

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TY  - JOUR
AU  - Aad, G.
AU  - Agatonović-Jovin, Tatjana
AU  - Božović-Jelisavčić, Ivanka
AU  - Ćirković, Predrag
AU  - Dimitrievska, A.
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Marjanovic, M.
AU  - Popovic, D. S.
AU  - Sijacki, Dj.
AU  - Simic, Lj.
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/786
AB  - This paper presents measurements from the ATLAS experiment of the forward-backward asymmetry in the reaction pp - GT Z/gamma* - GT l(+)l(-), with l being electrons or muons, and the extraction of the effective weak mixing angle. The results are based on the full set of data collected in 2011 in pp collisions at the LHC at root s = 7 TeV, corresponding to an integrated luminosity of 4.8 fb(-1). The measured asymmetry values are found to be in agreement with the corresponding Standard Model predictions. The combination of the muon and electron channels yields a value of the effective weak mixing angle of sin(2) theta(lept)(eff) = 0.2308 +/- 0.0005(stat.)+/- 0.0006(syst.)+/- 0.0009(PDF), where the first uncertainty corresponds to data statistics, the second to s ystematic effects and the third to knowledge of the parton density functions. This result agrees with the current world average from the Particle Data Group fit.
T2  - Journal of High Energy Physics
T1  - Measurement of the forward-backward asymmetry of electron and muon pair-production in pp collisions at root s=7 TeV with the ATLAS detector
IS  - 9
DO  - 10.1007/JHEP09(2015)049
ER  -

@article{
author = "Aad, G. and Agatonović-Jovin, Tatjana and Božović-Jelisavčić, Ivanka and Ćirković, Predrag and Dimitrievska, A. and Krstić, Jelena and Mamužić, Judita and Marjanovic, M. and Popovic, D. S. and Sijacki, Dj. and Simic, Lj. and Vranjes, N. and Vranješ Milosavljević, Marija",
year = "2015",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/786",
abstract = "This paper presents measurements from the ATLAS experiment of the forward-backward asymmetry in the reaction pp - GT Z/gamma* - GT l(+)l(-), with l being electrons or muons, and the extraction of the effective weak mixing angle. The results are based on the full set of data collected in 2011 in pp collisions at the LHC at root s = 7 TeV, corresponding to an integrated luminosity of 4.8 fb(-1). The measured asymmetry values are found to be in agreement with the corresponding Standard Model predictions. The combination of the muon and electron channels yields a value of the effective weak mixing angle of sin(2) theta(lept)(eff) = 0.2308 +/- 0.0005(stat.)+/- 0.0006(syst.)+/- 0.0009(PDF), where the first uncertainty corresponds to data statistics, the second to s ystematic effects and the third to knowledge of the parton density functions. This result agrees with the current world average from the Particle Data Group fit.",
journal = "Journal of High Energy Physics",
title = "Measurement of the forward-backward asymmetry of electron and muon pair-production in pp collisions at root s=7 TeV with the ATLAS detector",
number = "9",
doi = "10.1007/JHEP09(2015)049"
}

Aad G, Agatonović-Jovin T, Božović-Jelisavčić I, Ćirković P, Dimitrievska A, Krstić J, Mamužić J, Marjanovic M, Popovic DS, Sijacki D, Simic L, Vranjes N, Vranješ Milosavljević M. Measurement of the forward-backward asymmetry of electron and muon pair-production in pp collisions at root s=7 TeV with the ATLAS detector. Journal of High Energy Physics. 2015;(9)

Aad, G., Agatonović-Jovin, T., Božović-Jelisavčić, I., Ćirković, P., Dimitrievska, A., Krstić, J., Mamužić, J., Marjanovic, M., Popovic, D. S., Sijacki, Dj., Simic, Lj., Vranjes, N.,& Vranješ Milosavljević, M. (2015). Measurement of the forward-backward asymmetry of electron and muon pair-production in pp collisions at root s=7 TeV with the ATLAS detector.
Journal of High Energy Physics(9).
https://doi.org/10.1007/JHEP09(2015)049

Aad G., Agatonović-Jovin Tatjana, Božović-Jelisavčić Ivanka, Ćirković Predrag, Dimitrievska A., Krstić Jelena, Mamužić Judita, Marjanovic M., Popovic D. S., Sijacki Dj., Simic Lj., Vranjes N., Vranješ Milosavljević Marija, "Measurement of the forward-backward asymmetry of electron and muon pair-production in pp collisions at root s=7 TeV with the ATLAS detector", no. 9 (2015),
https://doi.org/10.1007/JHEP09(2015)049 .