Electroweak production of the top quark is measured for the first time in pp collisions at root s = 7 TeV, using a data set collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 36 pb(-1). With an event selection optimized for t-channel production, two complementary analyses are performed. The first one exploits the special angular properties of the signal, together with background estimates from the data. The second approach uses a multivariate analysis technique to probe the compatibility with signal topology expected from electroweak top-quark production. The combined measurement of the cross section is 83.6 +/- 29.8 (stat + syst) +/- 3.3(lumi) pb, consistent with the standard model expectation.

Chatrchyan, S., Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., et al. (2011). Measurement of the t-Channel Single Top Quark Production Cross Section in pp Collisions at root s=7 TeV. PHYSICAL REVIEW LETTERS, 107(9) [10.1103/PhysRevLett.107.091802].

Measurement of the t-Channel Single Top Quark Production Cross Section in pp Collisions at root s=7 TeV

De Guio, F;GHEZZI, ALESSIO;Massironi, A;Moroni, L;PAGANONI, MARCO;RAGAZZI, STEFANO;TABARELLI DE FATIS, TOMMASO;Branca, A;Govoni, P;Malberti, M;DINARDO, MAURO EMANUELE;
2011

Abstract

Electroweak production of the top quark is measured for the first time in pp collisions at root s = 7 TeV, using a data set collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 36 pb(-1). With an event selection optimized for t-channel production, two complementary analyses are performed. The first one exploits the special angular properties of the signal, together with background estimates from the data. The second approach uses a multivariate analysis technique to probe the compatibility with signal topology expected from electroweak top-quark production. The combined measurement of the cross section is 83.6 +/- 29.8 (stat + syst) +/- 3.3(lumi) pb, consistent with the standard model expectation.
Articolo in rivista - Articolo scientifico
CMS; LHC; single top
English
2011
107
9
091802
none
Chatrchyan, S., Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., et al. (2011). Measurement of the t-Channel Single Top Quark Production Cross Section in pp Collisions at root s=7 TeV. PHYSICAL REVIEW LETTERS, 107(9) [10.1103/PhysRevLett.107.091802].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/46676
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