Measurement of Tt Production Cross Section in Pp Collisions at [square Root] S
Author: Harpreet Singh
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Published: 1999
Total Pages: 418
ISBN-13:
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Author: Harpreet Singh
Publisher:
Published: 1999
Total Pages: 418
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DOWNLOAD EBOOKAuthor: Sebastian Carron Montero
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Published: 2006
Total Pages: 366
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DOWNLOAD EBOOKAuthor: DooKee Cho
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Published: 2005
Total Pages: 198
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Published: 2015
Total Pages: 34
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DOWNLOAD EBOOKThe cross section for tt production in the all-jets final state is measured in pp collisions at a centre-of-mass energy of 8 TeV at the LHC with the CMS detector, in data corresponding to an integrated luminosity of 18.4 fb-1. The inclusive cross section is found to be 275.6 ±6.1 (stat) ± 37.8 (syst) ± 7.2 (lumi) pb. The normalized differential cross sections are measured as a function of the top quark transverse momenta, pT, and compared to predictions from quantum chromodynamics. The results are reported at detector, parton, and particle levels. In all cases, the measured top quark pT spectra are significantly softer than theoretical predictions.
Author: Henri Bachacou
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Published: 2004
Total Pages: 544
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Published: 2014
Total Pages: 21
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DOWNLOAD EBOOKThe top-quark pair production cross section is measured in final states with one electron or muon and one hadronically decaying [tau] lepton from the process $t\bar{t}$ to (l[nu]l) ([tau][nu][tau]) $b\bar{b}$, where l = e, [mu]. The data sample corresponds to an integrated luminosity of 19.6 fb-1 collected with the CMS detector in proton-proton collisions at $\sqrt{s}$ =8 TeV. The measured cross section [sigma]$t\bar{t}$ = 257 ± 3 (stat) ± 24 (syst) ± 7 (lumi) pb, assuming a top-quark mass of 172.5 GeV, is consistent with the standard model prediction.
Author: Salvatore Rocco Rappoccio
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Published: 2005
Total Pages: 688
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Published: 2017
Total Pages:
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DOWNLOAD EBOOKA measurement of the $\mathrm{ t \bar{t} }$ production cross section at $\sqrt{s}=$ 13 TeV is presented using proton-proton collisions, corresponding to an integrated luminosity of 2.3 fb$^{-1}$, collected with the CMS detector at the LHC. Final states with one isolated charged lepton (electron or muon) and at least one jet are selected and categorized according to the accompanying jet multiplicity. From a likelihood fit to the invariant mass distribution of the isolated lepton and a jet identified as coming from the hadronization of a bottom quark, the cross section is measured to be $\sigma(\mathrm{ t \bar{t} })=$ 835 $\pm$ 3 (stat) $\pm$ 23 (syst) $\pm$ 23 (lumi) pb, in agreement with the standard model prediction. Using the expected dependence of the cross section on the pole mass of the top quark ($m_{\mathrm{ t }}$), the value of $m_{\mathrm{ t }}$ is found to be 172.7$^{+2.4}_{-2.7}$ GeV.
Author: Heather L. Ray
Publisher:
Published: 2004
Total Pages: 354
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DOWNLOAD EBOOKAuthor: Joseph Francis Kozminski
Publisher:
Published: 2005
Total Pages: 444
ISBN-13:
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