Measurement of the t(t)over-bar production cross section in the tau plus jets channel in pp collisions at root s=7 TeV

The top-quark pair production cross section in 7 TeV center-of-mass energy proton-proton collisions is measured using data collected by the CMS detector at the LHC. The measurement uses events with one jet identified as a hadronically decaying tau lepton and at least four additional energetic jets, at least one of which is identified as coming from a b quark. The analyzed data sample corresponds to an integrated luminosity of 3.9 fb(-1) recorded by a dedicated multijet plus hadronically decaying tau trigger. A neural network has been developed to separate the top-quark pairs from the W + jets and multijet backgrounds. The measured value of sigma(t (t) over bar) = 152 +/- 12 (stat.) +/- 32 (syst.) +/- 3 (lum.) pb is consistent with the standard model predictions.

Извор:
European Physical Journal C. Particles and Fields, 2013, 73, 4

Финансирање / пројекти:

BMWF, FWF (Austria), FNRS, FWO (Belgium), CNPq, CAPES, FAPERJ, FAPESP (Brazil), MEYS (Bulgaria), CERN, CAS, MoST, NSFC (China), COLCIENCIAS (Colombia), MSES (Croatia), RPF (Cyprus), MoER [SF0690030s09], ERDF (Estonia), Academy of Finland, MEC, HIP (Finland), CEA, CNRS/IN2P3 (France), BMBF, Germany, DFG, HGF (Germany), GSRT (Greece), OTKA, NKTH (Hungary), DAE, DST (India), IPM (Iran), SFI (Ireland), INFN (Italy), NRF, WCU (Republic of Korea), LAS (Lithuania), CINVESTAV, CONACYT, SEP, UASLP-FAI (Mexico), MSI (New Zealand), PAEC (Pakistan), MSHE, NSC (Poland), FCT (Portugal), JINR (Armenia), JINR (Belarus), JINR (Georgia), JINR (Ukraine), JINR (Uzbekistan), MON, RosAtom, RAS, RFBR (Russia), MSTD (Serbia), SEIDI, CPAN (Spain), NSC (Taipei), ThEPCenter, IPST, NSTDA (Thailand), TUBITAK, TAEK (Tkey), NASU (Ukraine), STFC (United Kingdom), DOE, NSF (USA)

DOI: 10.1140/epjc/s10052-013-2386-x

ISSN: 1434-6044; 1434-6052

WoS: 000318292200022

Scopus: 2-s2.0-84878504500

[ Google Scholar ]



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TY  - JOUR
AU  - Chatrchyan, S.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Ekmedžić, Marko
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5486
AB  - The top-quark pair production cross section in 7 TeV center-of-mass energy proton-proton collisions is measured using data collected by the CMS detector at the LHC. The measurement uses events with one jet identified as a hadronically decaying tau lepton and at least four additional energetic jets, at least one of which is identified as coming from a b quark. The analyzed data sample corresponds to an integrated luminosity of 3.9 fb(-1) recorded by a dedicated multijet plus hadronically decaying tau trigger. A neural network has been developed to separate the top-quark pairs from the W + jets and multijet backgrounds. The measured value of sigma(t (t) over bar) = 152 +/- 12 (stat.) +/- 32 (syst.) +/- 3 (lum.) pb is consistent with the standard model predictions.
T2  - European Physical Journal C. Particles and Fields
T1  - Measurement of the t(t)over-bar production cross section in the tau plus jets channel in pp collisions at root s=7 TeV
VL  - 73
IS  - 4
DO  - 10.1140/epjc/s10052-013-2386-x
ER  -

@article{
author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2013",
abstract = "The top-quark pair production cross section in 7 TeV center-of-mass energy proton-proton collisions is measured using data collected by the CMS detector at the LHC. The measurement uses events with one jet identified as a hadronically decaying tau lepton and at least four additional energetic jets, at least one of which is identified as coming from a b quark. The analyzed data sample corresponds to an integrated luminosity of 3.9 fb(-1) recorded by a dedicated multijet plus hadronically decaying tau trigger. A neural network has been developed to separate the top-quark pairs from the W + jets and multijet backgrounds. The measured value of sigma(t (t) over bar) = 152 +/- 12 (stat.) +/- 32 (syst.) +/- 3 (lum.) pb is consistent with the standard model predictions.",
journal = "European Physical Journal C. Particles and Fields",
title = "Measurement of the t(t)over-bar production cross section in the tau plus jets channel in pp collisions at root s=7 TeV",
volume = "73",
number = "4",
doi = "10.1140/epjc/s10052-013-2386-x"
}

Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2013). Measurement of the t(t)over-bar production cross section in the tau plus jets channel in pp collisions at root s=7 TeV. in European Physical Journal C. Particles and Fields, 73(4).
https://doi.org/10.1140/epjc/s10052-013-2386-x

Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Measurement of the t(t)over-bar production cross section in the tau plus jets channel in pp collisions at root s=7 TeV. in European Physical Journal C. Particles and Fields. 2013;73(4).
doi:10.1140/epjc/s10052-013-2386-x .

Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Measurement of the t(t)over-bar production cross section in the tau plus jets channel in pp collisions at root s=7 TeV" in European Physical Journal C. Particles and Fields, 73, no. 4 (2013),
https://doi.org/10.1140/epjc/s10052-013-2386-x . .