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Search for s-channel single top-quark production in proton-proton collisions at √s=8 TeV with the ATLAS detector

Aad, G.
•
Abbott, B.
•
Abdallah, J.
altro
GIORDANI, Mario
2015
  • journal article

Periodico
PHYSICS LETTERS. SECTION B
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 topquark production cross-section of 14.6 pb at the 95% confidence level. The fit gives a cross-section of sigma(s) = 5.0 +/- 4.3 pb, consistent with the Standard Model expectation.
DOI
10.1016/j.physletb.2014.11.042
WOS
WOS:000347046200017
Archivio
http://hdl.handle.net/11390/1096683
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84969771501
http://www.sciencedirect.com/science/journal/03702693
Diritti
metadata only access
Soggetti
  • ATLAS

  • Electroweak productio...

  • S-Channel

  • Top-quark

  • Nuclear and High Ener...

Scopus© citazioni
27
Data di acquisizione
Jun 14, 2022
Vedi dettagli
Web of Science© citazioni
16
Data di acquisizione
Mar 18, 2024
Visualizzazioni
1
Data di acquisizione
Apr 19, 2024
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