Journal article
Search for s-channel single top-quark production in proton-proton collisions at √s=8 TeV with the ATLAS detector
Physics letters. B, Vol.740, pp.118-136
01/01/2015
DOI: 10.1016/j.physletb.2014.11.042
Abstract
This Letter presents a search at the LHC for s-channel single top-quark production in proton-proton collisions at a centre-of-mass energy of 8 TeV. The analyzed data set was recorded by the ATLAS detector and corresponds to an integrated luminosity of 20.3 fb-1. Selected events contain one charged lepton, large missing transverse momentum and exactly two b-tagged jets. A multivariate event classifier based on boosted decision trees is developed to discriminate s-channel single top-quark events from the main background contributions. The signal extraction is based on a binned maximum-likelihood fit of the output classifier distribution. The analysis leads to an upper limit on the s-channel single top-quark production cross-section of 14.6 pb at the 95% confidence level. The fit gives a cross-section of σs = 5.0 ± 4.3 pb, consistent with the Standard Model expectation.
Details
- Title: Subtitle
- Search for s-channel single top-quark production in proton-proton collisions at √s=8 TeV with the ATLAS detector
- Creators
- ATLAS CollaborationG Aad (Contributor) - Aix-Marseille UniversitéB Abbott (Contributor) - University of OklahomaJ Abdallah (Contributor) - Academia SinicaS Abdel Khalek (Contributor)O Abdinov (Contributor) - Azerbaijan National Academy of SciencesR Aben (Contributor) - University of AmsterdamB Abi (Contributor) - University of OklahomaM Abolins (Contributor)U Mallik (Contributor) - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- Physics letters. B, Vol.740, pp.118-136
- DOI
- 10.1016/j.physletb.2014.11.042
- ISSN
- 0370-2693
- eISSN
- 1873-2445
- Publisher
- Elsevier B.V
- Grant note
- DOI: 10.13039/501100003074, name: ANPCyT, award: YerPhI; DOI: 10.13039/501100000923, name: ARC; DOI: 10.13039/501100003413, name: BMWFW; DOI: 10.13039/501100002428, name: FWF; DOI: 10.13039/100011590, name: ANAS; DOI: 10.13039/501100011724, name: SSTC; DOI: 10.13039/501100003593, name: CNPq; DOI: 10.13039/501100001807, name: FAPESP; DOI: 10.13039/501100000038, name: NSERC; DOI: 10.13039/501100000046, name: NRC; DOI: 10.13039/501100000196, name: CFI; DOI: 10.13039/501100002848, name: CONICYT; DOI: 10.13039/501100002367, name: CAS; DOI: 10.13039/501100002855, name: MOST; DOI: 10.13039/501100001809, name: NSFC; DOI: 10.13039/100007637, name: COLCIENCIAS; name: MSMT CR; name: MPO CR; name: VSC CR; DOI: 10.13039/501100001732, name: DNRF; name: DNSRC; DOI: 10.13039/501100003554, name: Lundbeck Foundation; name: EPLANET; DOI: 10.13039/501100000781, name: ERC; name: NSRF; name: IN2P3-CNRS; name: CEA-DSM/IRFU; DOI: 10.13039/501100004802, name: GNSF; DOI: 10.13039/501100002347, name: BMBF; DOI: 10.13039/501100001659, name: DFG; name: HGF; DOI: 10.13039/501100004189, name: MPG; DOI: 10.13039/100005156, name: AvH Foundation; DOI: 10.13039/501100003448, name: GSRT; name: NSRF; DOI: 10.13039/501100003977, name: ISF; name: MINERVA; DOI: 10.13039/501100001736, name: GIF; DOI: 10.13039/501100005386, name: I-CORE; name: Benoziyo Center; DOI: 10.13039/501100004007, name: INFN; DOI: 10.13039/501100001700, name: MEXT; DOI: 10.13039/501100001691, name: JSPS; DOI: 10.13039/501100006319, name: CNRST; DOI: 10.13039/501100001712, name: FOM; DOI: 10.13039/501100003246, name: NWO; name: BRF; name: RCN; DOI: 10.13039/501100004569, name: MNiSW; DOI: 10.13039/501100004281, name: NCN; name: GRICES; DOI: 10.13039/501100001871, name: FCT; name: MNE/IFA; name: MES of Russia; DOI: 10.13039/501100008687, name: ROSATOM; DOI: 10.13039/501100003822, name: JINR; name: MSTD; name: MSSR; DOI: 10.13039/501100004329, name: ARRS; name: MIZŠ; name: DST/NRF; DOI: 10.13039/501100003329, name: MINECO; name: SRC; name: Wallenberg Foundation; name: SER; DOI: 10.13039/501100001711, name: SNSF; name: Cantons of Bern and Geneva; DOI: 10.13039/501100001868, name: NSC; DOI: 10.13039/100010440, name: TAEK; DOI: 10.13039/501100000271, name: STFC; DOI: 10.13039/501100000288, name: Royal Society; DOI: 10.13039/501100000275, name: Leverhulme Trust; DOI: 10.13039/100000015, name: DOE; DOI: 10.13039/100000001, name: NSF
- Language
- English
- Date published
- 01/01/2015
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199946802771
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